WO2022085550A1 - 炭素質材料及びその製造方法、並びに、含フッ素有機化合物除去材、浄水用フィルター及び浄水器 - Google Patents

炭素質材料及びその製造方法、並びに、含フッ素有機化合物除去材、浄水用フィルター及び浄水器 Download PDF

Info

Publication number
WO2022085550A1
WO2022085550A1 PCT/JP2021/038008 JP2021038008W WO2022085550A1 WO 2022085550 A1 WO2022085550 A1 WO 2022085550A1 JP 2021038008 W JP2021038008 W JP 2021038008W WO 2022085550 A1 WO2022085550 A1 WO 2022085550A1
Authority
WO
WIPO (PCT)
Prior art keywords
carbonaceous material
gas
water
volume
oxygen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/038008
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
修一 石田
清人 大塚
哲也 花本
寛枝 吉延
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kuraray Co Ltd
Original Assignee
Kuraray Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=81290852&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2022085550(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kuraray Co Ltd filed Critical Kuraray Co Ltd
Priority to JP2022507412A priority Critical patent/JP7060772B1/ja
Priority to US18/032,608 priority patent/US20230390731A1/en
Priority to CN202180070915.8A priority patent/CN116529207B/zh
Priority to EP21882691.5A priority patent/EP4215483A4/en
Priority to KR1020237013904A priority patent/KR20230091907A/ko
Priority to JP2022066387A priority patent/JP2022093398A/ja
Publication of WO2022085550A1 publication Critical patent/WO2022085550A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/02—Loose filtering material, e.g. loose fibres
    • B01D39/04—Organic material, e.g. cellulose, cotton
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2055—Carbonaceous material
    • B01D39/2058—Carbonaceous material the material being particulate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2055—Carbonaceous material
    • B01D39/2065—Carbonaceous material the material being fibrous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28011—Other properties, e.g. density, crush strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28057—Surface area, e.g. B.E.T specific surface area
    • B01J20/28066—Surface area, e.g. B.E.T specific surface area being more than 1000 m2/g
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28069—Pore volume, e.g. total pore volume, mesopore volume, micropore volume
    • B01J20/28071—Pore volume, e.g. total pore volume, mesopore volume, micropore volume being less than 0.5 ml/g
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28078—Pore diameter
    • B01J20/2808—Pore diameter being less than 2 nm, i.e. micropores or nanopores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/30—Active carbon
    • C01B32/312—Preparation
    • C01B32/318—Preparation characterised by the starting materials
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/30—Active carbon
    • C01B32/312—Preparation
    • C01B32/318—Preparation characterised by the starting materials
    • C01B32/324—Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/30—Active carbon
    • C01B32/312—Preparation
    • C01B32/336—Preparation characterised by gaseous activating agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0407—Additives and treatments of the filtering material comprising particulate additives, e.g. adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0442—Antimicrobial, antibacterial, antifungal additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/08—Special characteristics of binders
    • B01D2239/086—Binders between particles or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/20—Halogens or halogen compounds
    • B01D2257/206—Organic halogen compounds
    • B01D2257/2066—Fluorine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48—Sorbents characterised by the starting material used for their preparation
    • B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
    • B01J2220/485—Plants or land vegetals, e.g. cereals, wheat, corn, rice, sphagnum, peat moss
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48—Sorbents characterised by the starting material used for their preparation
    • B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
    • B01J2220/4881—Residues from shells, e.g. eggshells, mollusk shells
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/14—Pore volume
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/32—Hydrocarbons, e.g. oil
    • C02F2101/322—Volatile compounds, e.g. benzene
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/36—Organic compounds containing halogen

Definitions

  • the present invention relates to a carbonaceous material. Further, the present invention relates to a method for producing the carbonaceous material, and a fluorine-containing organic compound removing material, a water purification filter and a water purifier using the carbonaceous material.
  • Fluoro-containing organic compounds have unique properties that cannot be realized by other substances (heat resistance, excellent chemical resistance, can be used even under harsh conditions, no light absorption ability, etc.), so surfactants, emulsifiers, water repellents, etc. It has been used for various purposes such as fire extinguishing agents, waxes, carpet cleaning agents, and coating agents. Recently, applications as functional materials such as surface treatment agents for semiconductors and fuel cell constituent materials are increasing.
  • the fluorine-containing surfactant is removed from the water to be treated by contacting the activated carbon containing 90% or more of the particles passing through the 75 ⁇ m filter with the water to be treated containing the fluorine-containing surfactant.
  • Patent Document 1 A method has been reported (Patent Document 1).
  • Patent Document 1 As in the technique proposed in Patent Document 1, there have been reports on the removal of fluorine-containing organic compounds from water using activated carbon.
  • the technique described in Patent Document 1 is a technique mainly used for batch applications (treatment / purification of factory wastewater).
  • the techniques reported so far are methods for removing PFAS from raw water (river water, etc.) in such batch applications and water purification plants, and the means for removing fluorine-containing organic compounds with a water purifier, etc.
  • the current situation is that research has not progressed much yet.
  • the water to be treated differs between the treatment at a water purification plant and the treatment with a water purifier (raw water and tap water), and the treatment time of the water to be treated is also significantly different. For example, it cannot be directly applied to a water purifier for home use.
  • a main object of the present invention is to provide a carbonaceous material having high PFAS (PFOS, PFOA, etc.) removal performance that can be used in water purifier applications.
  • PFAS PFOS, PFOA, etc.
  • the carbonaceous material according to one aspect of the present invention has a benzene adsorption amount of 30 to 60%, a vitamin B12 adsorption amount of more than 50.0 mg / g, and is calculated from a nitrogen adsorption isotherm by the BJH method.
  • the pore volume of the mesopores is 0.13 to 0.30 cm 3 / g.
  • the method for producing a carbonaceous material according to another aspect of the present invention is to use a flow furnace and to use an oxygen-containing gas separately from the flow gas introduced from the hearth, in a gas obtained by summing the flow gas and the oxygen-containing gas. It is characterized in that it is introduced into a flow furnace so that the oxygen concentration is 0.004 to 1% by volume.
  • the water purification filter according to still another aspect of the present invention contains the carbonaceous material and the fibrous binder as described above, the CSF value of the fibrous binder is 10 to 150 mL, and 100 parts by mass of the carbonic material. On the other hand, it is characterized by containing 4 to 10 parts by mass of a fibrous binder.
  • FIG. 1 is a schematic diagram for explaining a method for producing a carbonaceous material using a flow furnace in one embodiment of the present invention.
  • FIG. 2 is a schematic diagram for explaining a method for producing a carbonaceous material using a flow furnace in one embodiment of the present invention.
  • FIG. 3 is a graph showing the relationship between the removal rates of PFOS and PFOA and Bed Volume in Examples and Comparative Examples of the present invention.
  • the carbonaceous material according to the embodiment of the present invention has a benzene adsorption amount of 30 to 60%, a vitamin B12 adsorption amount of more than 50.0 mg / g, and is calculated from a nitrogen adsorption isotherm by the BJH method.
  • the pore volume of the mesopores is 0.13 to 0.30 cm 3 / g.
  • the amount of benzene adsorbed is an index showing the progress of activation of carbonaceous materials.
  • the carbonaceous material according to the present embodiment is suitable for adsorbing PFAS because the amount of benzene adsorbed is in the range of 30 to 60%.
  • the benzene adsorption amount of the carbonaceous material is in the range of 30 to 60%, and the upper limit is preferably 58% or less, more preferably 56% or less, still more preferably 55%.
  • the lower limit is preferably 40% or more, more preferably 42% or more, still more preferably 44% or more.
  • the amount of benzene adsorbed on the carbonaceous material can be measured by the method described in [Measurement of benzene adsorption amount] described later.
  • Vitamin B12 (cyanocobalamin) has a large molecular weight of about 1355, and the amount of vitamin B12 adsorbed is an index of adsorption characteristics for a substance having a large molecular size.
  • the carbonaceous material according to the present embodiment has a vitamin B12 adsorption amount of more than 50 mg / g, and thus is a carbonaceous material suitable for adsorbing PFAS.
  • the adsorption amount of vitamin B12 of the carbonaceous material is more than 50 mg / g, preferably 60 mg / g or more, more preferably 70 mg / g or more, still more preferably 80 mg / g or more.
  • the upper limit of the amount of vitamin B12 adsorbed is not particularly limited, but is usually preferably 500 mg / g or less, more preferably 460 mg / g or less, still more preferably, from the viewpoint of the balance with other physical property values such as the amount of benzene adsorbed. Is 420 mg / g or less.
  • the amount of vitamin B12 adsorbed on the carbonaceous material can be measured by the method described in [Measurement of the amount of vitamin B12 adsorbed] described later.
  • the pores of a carbonaceous material can be classified into micropores (less than 2 nm in diameter), mesopores (2-50 nm in diameter), and macropores (more than 50 nm in diameter) according to their diameter (IUPAC in parentheses). Indicates the classification criteria of).
  • the mesopores are larger than the micropores, and the volume of the mesopores can be an index of the adsorption characteristics of a substance having a large molecular size.
  • the carbonaceous material according to the present embodiment has a mesopore volume in the range of 0.130 to 0.30 cm 3 / g, which makes it a carbonaceous material more suitable for adsorption of PFAS.
  • the mesopore volume of the carbonaceous material is in the range of 0.130 to 0.300 cm 3 / g, and the lower limit is preferably 0.140 cm 3 / g or more, more preferably. Is 0.145 cm 3 / g or more.
  • the upper limit is preferably 0.280 cm 3 / g or less, and more preferably 0.250 cm 3 / g or less.
  • the mesopore volume of the carbonaceous material can be calculated from the nitrogen adsorption isotherm using the BJH (Barrett-Joiner-Halenda) method.
  • the measurement of the nitrogen adsorption isotherm and the calculation of the mesopore volume can be carried out by the methods described in [Measurement of nitrogen adsorption isotherm] and [Measurement of mesopore pore volume by BJH method] described later.
  • the technical significance of each of the benzene adsorption amount, the vitamin B12 adsorption amount, and the mesopore pore volume in the present embodiment has been tried to explain, but the structure of the carbonaceous material (adsorption medium) and the adsorption characteristics for the adsorbent.
  • the relationship is complicated, and the amount of benzene adsorbed, the amount of vitamin B12 adsorbed, and the volume of mesopores may not immediately correlate with the adsorption characteristics for the adsorbent independently.
  • the carbonaceous material of the present embodiment is not particularly limited in other properties, but more. In order to surely obtain the effect of the present invention, it is considered preferable to have the characteristics described below.
  • the carbonaceous material preferably has a specific surface area in the range of 1200 to 2000 m 2 / g from the viewpoint of achieving the adsorption removal performance required for a water purifier at a high level.
  • the lower limit of the specific surface area is more preferably 1300 m 2 / g or more, or 1400 m 2 / g or more, and the upper limit is more preferably 1900 m 2 / g or less, or 1800 m 2 / g or less.
  • the specific surface area of the carbonaceous material can be calculated from the nitrogen adsorption isotherm using the BET method.
  • the measurement of the nitrogen adsorption isotherm and the calculation of the specific surface area can be carried out by the methods described in [Measurement of nitrogen adsorption isotherm] and [Measurement of specific surface area] described later.
  • the carbonaceous material preferably has an average pore diameter in the range of 1.85 to 1.90 nm.
  • the lower limit of the average pore diameter is more preferably 1.86 nm or more or 1.87 nm or more, and the upper limit is preferably 1.89 nm or less or 1.88 nm or less.
  • the average pore diameter of carbonaceous material can be calculated from the nitrogen adsorption isotherm.
  • the measurement of the nitrogen adsorption isotherm and the calculation of the average pore diameter can be carried out by the methods described in [Measurement of nitrogen adsorption isotherm] and [Measurement of total pore volume / average pore diameter] described later.
  • the carbonaceous material according to the present embodiment preferably has a conductivity in the range of 3 to 9 S / cm as measured by powder resistance at a load of 12 kN.
  • the upper limit of the conductivity is preferably 8.7 S / cm or less, more preferably 8.3 S / cm or less, still more preferably 8 S / cm or less, and the lower limit is preferably 5.3 S / cm or more, more preferably. It is 5.6 S / cm or more, more preferably 6 S / cm or more.
  • the above-mentioned conductivity of a carbonaceous material can be measured by the method described in [Measurement of Conductivity] described later.
  • the shape of the carbonaceous material is not particularly limited, and may be any shape such as a particle shape or a fibrous shape (thread shape, woven cloth (cloth) shape, felt shape), and can be appropriately selected according to a specific usage mode. However, since the adsorption performance per unit volume is high, the particulate form is preferable. In the case of a particulate carbonaceous material, its dimensions are not particularly limited, and the particle size and the like may be appropriately adjusted according to the specific usage mode.
  • the raw material (carbonaceous precursor) of the carbonaceous material is not particularly limited.
  • plant-based carbonaceous precursors eg, wood, shavings, coal, fruit husks such as coconut husks and walnut husks, fruit seeds, pulp production by-products, lignin, waste sugar honey and other plant-derived materials
  • mineral-based Carbonaceous precursors eg, mineral-derived materials such as peat, subcarbon, brown charcoal, bituminous charcoal, smokeless coal, coke, coal tar, coal pitch, petroleum distillation residue, petroleum pitch
  • synthetic resin-based carbonaceous precursors eg , Phenolic resin, polyvinylidene chloride, materials derived from synthetic resins such as acrylic resin
  • natural fiber-based carbonaceous precursors for example, natural fibers such as cellulose, materials derived from natural fibers such as recycled fibers such as rayon), etc.
  • a plant-based carbonaceous precursor is preferable because it is easy to use a carbonaceous material having excellent adsorption performance of the substance to be removed specified by the Household Goods Quality Labeling Law. Therefore, in one preferred embodiment, the carbonaceous material is derived from a plant-based carbonaceous precursor. From the viewpoint of realizing a carbonaceous material capable of removing PFAS more efficiently, it is preferable to use coconut shell as a raw material. Therefore, in one particularly preferred embodiment, palm husks are used as the plant-based carbonaceous precursor.
  • the carbonaceous material according to this embodiment is suitable for adsorption of PFAS, and exhibits an excellent effect especially in water purifier applications. Therefore, the carbonaceous material of the present embodiment can be suitably used as a carbonaceous material for purifying water (carbonaceous material for water purification), and a carbonaceous material for purifying tap water (for purifying tap water). It can be more preferably used as a carbonaceous material).
  • the carbonaceous material of the present embodiment has a Bed Volume of 12000 or more in removing performance of the fluorine-containing organic compound obtained under the following measurement conditions.
  • the carbonaceous material of the present embodiment can efficiently adsorb the fluorine-containing organic compound, it can be suitably used as a fluorine-containing organic compound removing material. Therefore, the present invention also includes the fluorine-containing organic compound removing material made of the above-mentioned carbonaceous material.
  • the carbonaceous material according to the embodiment of the present invention is produced by activating the carbonaceous precursor described above.
  • carbonization is required prior to activation, it is usually sufficient to block oxygen or air and carbonize at, for example, 400 to 800 ° C (preferably 500 to 800 ° C, more preferably 550 to 750 ° C). ..
  • the coking coal obtained by carbonizing the carbonaceous precursor is activated to produce a carbonaceous material.
  • a carbonaceous material having a specific range of benzene adsorption amount, vitamin B12 adsorption amount, and mesopore pore volume (characteristics such as specific surface area, average pore diameter, conductivity, etc., which may be optionally filled if necessary).
  • the activation method is important.
  • the method for producing a carbonaceous material according to the present embodiment uses a flow furnace (fluid activation furnace) as an activation furnace, and uses a flow gas to be introduced from the hearth. Separately, it is characterized by introducing an oxygen-containing gas into a flow furnace.
  • the amount of benzene adsorbed is 40 to 60% and vitamin B12 is adsorbed, which was difficult to achieve by the conventional method using a rotary kiln as an activation furnace or the conventional method of introducing a fluid gas exclusively from the hearth into a fluidized furnace. It is possible to realize a carbonaceous material having an amount of more than 50 mg / g.
  • the fluid gas is not particularly limited as long as it has an action of fluidly activating the coking coal, and conventionally known ones may be used.
  • the fluid gas includes a gas containing water vapor and / or carbon dioxide.
  • a combustion gas of a hydrocarbon for example, a light gas such as methane, propane and butane, and a liquid fuel such as light oil, kerosene and heavy oil is preferably used.
  • the water vapor concentration in the fluid gas is preferably 10 to 40% by volume.
  • the upper limit is more preferably 35% by volume or less, or 30% by volume or less, and the lower limit is more preferably 12% by volume or more, 14% by volume or more, or 15% by volume or more.
  • the carbon dioxide concentration in the fluid gas is preferably 15% by volume or less.
  • the upper limit is more preferably 14% by volume or less or 13% by volume or less, and the lower limit is more preferably 8% by volume or more, 9% by volume or more, or 10% by volume or more.
  • an oxygen-containing gas is introduced into the fluidized furnace separately from the fluidized gas introduced from the hearth.
  • the oxygen-containing gas is introduced into the flow furnace so that the oxygen concentration in the total gas of the fluid gas and the oxygen-containing gas is 0.004 to 1% by volume.
  • the oxygen concentration in the total gas of the fluid gas and the oxygen-containing gas is preferably 0.005% by volume or more, 0.01% by volume or more, and 0. It is 0.02% by volume or more, 0.03% by volume or more, 0.04% by volume or more, or 0.05% by volume or more.
  • the upper limit of the oxygen concentration is preferably 0.95% by volume or less, 0.9% by volume or less, 0.85% by volume or less, or 0.8% by volume or less.
  • the oxygen concentration in the gas which is the sum of the fluid gas and the oxygen-containing gas, is a charge-equivalent concentration calculated based on the composition and introduction amount of the fluid gas and the composition and introduction amount of the oxygen-containing gas.
  • the oxygen-containing gas is not particularly limited as long as it contains oxygen, and for example, air and a gas obtained by diluting air with another gas (for example, an inert gas such as nitrogen) can be used.
  • the oxygen concentration in the oxygen-containing gas is not particularly limited as long as the oxygen concentration in the gas including the fluidized gas and the oxygen-containing gas is in the range of 0.004 to 1% by volume, but is preferably 20% by volume or less. It is preferably 15% by volume or less, 10% by volume or less, 8% by volume or less, 6% by volume or less, 5% by volume or less, 4% by volume or less, 3% by volume or less, or 2% by volume or less.
  • the lower limit of the oxygen concentration in the oxygen-containing gas is usually 0.1% by volume or more, 0.2% by volume or more, and the like.
  • Oxygen may be contained in the flowing gas introduced from the hearth, but when a combustion gas is used as the flowing gas, it is generally difficult to control a trace amount of oxygen concentration in the combustion gas. It is preferable to control the oxygen concentration by oxygen derived from the oxygen-containing gas.
  • FIG. 1 shows a schematic diagram of a flow furnace (flow activation furnace) 100 used in the manufacturing method of the present embodiment.
  • each reference numeral is 1 fluid gas inlet, 2 oxygen-containing gas inlet, 3 gas outlet, 4 gas dispersion layer, 5 coking coal, 6 coking coal (at the time of fluid activation), 7 fluid gas, 8 respectively.
  • Oxygen-containing gas, 9 exhaust gas, 10 gas dispersion part, 20 flow bed part, and 100 flow furnace (flow activation furnace) are shown.
  • the flow furnace 100 includes a flow gas inlet 1, an oxygen-containing gas inlet 2, a gas outlet 3, and a gas dispersion layer 4.
  • the fluidized gas inlet 1 is generally arranged in the hearth, and the fluidized gas (not shown) introduced into the fluidized furnace 100 passes through the gas dispersion layer 4 and comes into contact with the coking coal 5 for fluid activation of the coking coal. Served. After that, the flowing gas is discharged to the outside of the furnace from the gas outlet 3 generally arranged on the ceiling of the furnace.
  • the flow main direction of the flowing gas that is, the flow direction from the hearth to the hearth
  • Z the direction Z.
  • the gas dispersion layer 4 is not particularly limited as long as it has a function of dispersing the flow of the fluid gas introduced from the fluidized gas inlet 1 and uniformly contacting the coking coal 5 with the fluidized gas, and conventionally known ones are used. good.
  • a gas dispersion layer 4 including a buffer region from the hearth to the perforated plate As shown in FIG. 1, the gas dispersion layer 4 is arranged on the upstream side in the flow furnace when viewed in the flow main direction Z of the flow gas.
  • the region composed of the gas dispersion layer 4 is referred to as a gas dispersion unit 10. Therefore, the flow furnace 100 includes a gas dispersion unit 10 on the upstream side in the flow furnace when viewed in the flow main direction Z of the flow gas.
  • the fluidized bed 100 also includes a fluidized bed 20 on the downstream side of the fluidized bed in the main flow direction Z of the fluidized gas.
  • the coking coal 5 and the fluidized gas come into contact with each other to perform fluidized activation of the coking coal 5.
  • the manufacturing method of the present embodiment is characterized in that an oxygen-containing gas is introduced into the fluidized furnace in addition to the fluidized gas introduced from the hearth.
  • an oxygen-containing gas is introduced into the fluidized furnace in addition to the fluidized gas introduced from the hearth.
  • the position where the oxygen-containing gas is introduced is important. That is, the upstream end position of the gas dispersion portion in the flow main direction Z of the flowing gas is 0 (m), the downstream end position is t1 (m) (t1> 0), and the position where the oxygen-containing gas is introduced is t2.
  • (m) it is preferable to satisfy the relationship of 0.5t1 ⁇ t2.
  • t2 When 0.5t1> t2, it is difficult to realize the carbonaceous material according to the present embodiment in which the benzene adsorption amount and the vitamin B12 adsorption amount are in a specific range.
  • the upper limit of t2 is not particularly limited as long as the oxygen-containing gas can come into contact with the coking coal during fluidization activation, and may be any position up to the furnace ceiling, but the height (thickness) of the fluidized bed 20 in the direction Z can be set.
  • the oxygen-containing gas introduction position t2 refers to the center position of the width (thickness) when the oxygen-containing gas inlet 2 has a width (thickness) when viewed in the direction Z.
  • FIG. 2 shows a schematic diagram showing a state in which coking coal is fluidly activated using the fluidity furnace shown in FIG.
  • the members / parts represented by the same reference numerals as those in FIG. 1 represent the same members / parts as in FIG.
  • the fluidized gas 7 is introduced from the hearth and the oxygen-containing gas 8 is introduced into the fluidized furnace 100 from the furnace side.
  • the fluidized gas 7 passes through the gas dispersion section 10 composed of the gas dispersion layer 4, comes into contact with the coking coal in the fluidized bed section 20, and is used for fluid activation of the coking coal.
  • the oxygen-containing gas 8 (specifically, oxygen in the gas) comes into contact with the coking coal 6 being fluidly activated and is used for local activation of the coking coal.
  • the conditions for activating the coking coal conventionally known conditions may be adopted except that an oxygen-containing gas is introduced separately from the liquid gas.
  • the temperature at the time of activation may be 700 to 1000 ° C. (preferably 800 to 1000 ° C., more preferably 850 to 950 ° C.), and the activation time is the desired amount of benzene adsorbed (the desired degree of progress of activation). ) May be achieved at any time.
  • the production method of the present embodiment it is possible to produce a carbonaceous material having a specific range of benzene adsorption amount, vitamin B12 adsorption amount and mesopore pore volume by the action of an oxygen-containing gas introduced separately from the fluid gas.
  • an oxygen-containing gas introduced separately from the fluid gas.
  • the activation of the coking coal by water vapor or carbon dioxide in the fluid gas is an endothermic reaction
  • the activation of the coking coal by oxygen in the oxygen-containing gas is an exothermic reaction. Therefore, in the production method of the present embodiment in which the oxygen-containing gas is brought into contact with the coking coal being fluidly activated, it is possible to reduce the heat supply from the outside required to maintain the activation of the coking coal, and the energy balance can be improved. From the viewpoint, it is extremely advantageous.
  • the liquid gas 7 and the oxygen-containing gas 8 are discharged to the outside of the furnace from the gas outlet (exhaust gas 9 in FIG. 2).
  • the heat energy of the exhaust gas may be reused by circulating a part or all of the exhaust gas or exchanging heat.
  • FIGS. 1 and 2 show a flow furnace provided with one flow gas inlet 1, one oxygen-containing gas inlet 2, and one gas outlet 3, but FIGS. 1 and 2 are merely schematic views, and the flow furnace is a schematic diagram.
  • a plurality of fluid gas inlets 1, oxygen-containing gas inlets 2, and gas outlets 3 may be provided.
  • a plurality of oxygen-containing gas inlets 2 When a plurality of oxygen-containing gas inlets 2 are provided, they may be arranged at the same position (height) or at different positions (height) in the flow main direction Z of the flowing gas.
  • the production method of the present invention may include a step of cleaning the activated carbonaceous material.
  • mineral acid or water is used for cleaning, and hydrochloric acid having high cleaning efficiency is preferable as the mineral acid.
  • hydrochloric acid having high cleaning efficiency is preferable as the mineral acid.
  • the obtained carbonaceous material can be dried, crushed and sieved as necessary to obtain a product of carbonaceous material.
  • Water purification filter A filter for water purification can be manufactured using a carbonaceous material.
  • the water purification filter according to the preferred embodiment will be described below.
  • the water purification filter comprises the carbonaceous material and fibrous binder according to the present embodiment as described above.
  • the fibrous binder is not particularly limited as long as it can be shaped by entwining carbonaceous materials by making it fibrillated, and can be widely used regardless of whether it is a synthetic product or a natural product.
  • fibrous binders include acrylic fibers, polyethylene fibers, polypropylene fibers, polyacrylonitrile fibers, cellulose fibers, nylon fibers, aramid fibers, and pulps.
  • the fiber length of the fibrous binder is preferably 4 mm or less.
  • the fibrous binder may be used in combination of two or more. Particularly preferably, polyacrylonitrile fiber or pulp is used as a binder. Thereby, the density of the molded body and the strength of the molded body can be further increased, and the deterioration of the performance can be suppressed.
  • the water permeability of the fibrous binder is about 10 to 150 mL in CSF value.
  • the CSF value is a value measured according to JIS P8121 "Pulp drainage test method" Canadian standard freeness method.
  • the CSF value can be adjusted, for example, by fibrilizing the fibrous binder. If the CSF value of the fibrous binder is less than 10 mL, water permeability may not be obtained, the strength of the molded body may be low, and the pressure loss may be high. On the other hand, when the CSF value exceeds 150 mL, the powdered activated carbon cannot be sufficiently retained, the strength of the molded body is lowered, and the adsorption performance may be inferior.
  • the fibrous binder is preferably 4 to 10 parts by mass, more preferably 4.5 to 6 parts by mass with respect to 100 parts by mass of the carbonaceous material from the viewpoint of removal performance and moldability of the substance to be removed. Including part. Therefore, in one preferred embodiment, the water purification filter contains the carbonaceous material and the fibrous binder according to the present embodiment, and the CSF value of the fibrous binder is 10 to 150 mL, with respect to 100 parts by mass of the carbonaceous material. It contains 4 to 10 parts by mass of a fibrous binder.
  • “for 100 parts by mass of carbonaceous material" in the filter composition is "to 100 parts by mass of carbonaceous material and other functional components in total". It should be read as "on the other hand" and applied.
  • the water purification filter may contain other functional components as long as the effect of the present invention is not impaired.
  • Other functional components include, for example, lead adsorbents such as titanosilicates and zeolite powders capable of adsorbing and removing soluble lead, ion exchange resins or chelating resins, or silver ions and / or to impart antibacterial properties. Examples thereof include various adsorbents containing a silver compound.
  • the water purification filter according to the present embodiment contains the carbonaceous material according to the present embodiment, it is possible to efficiently remove PFAS.
  • the water flow condition is not particularly limited, but it is carried out at a space velocity (SV) of 300 to 6500 / hr so that the pressure loss does not become extremely large. Relationship between each removal rate calculated from the concentration of the substance to be removed in raw water and permeated water, and the ratio of the amount of water (L) flowing from the start of water flow to the volume (mL) of the water purification cartridge (cumulative permeated water amount L / mL). By plotting, the performance of the water purification filter can be confirmed.
  • a water purifier can be manufactured using a carbonaceous material or a water purification filter.
  • the water purifier comprises the carbonaceous material or water purification filter according to the present embodiment as described above.
  • the water purifier comprises a water purification cartridge, wherein the water purification cartridge is configured using the carbonaceous material or the water purification filter according to the present embodiment.
  • the carbonaceous material according to the present embodiment may be filled in the housing to form a water purification cartridge, or the water purification filter according to the present embodiment may be filled in the housing to form a water purification cartridge. good.
  • the water purification cartridge may include a known non-woven fabric filter, various adsorbents, mineral additives, a ceramic filter material, a hollow fiber membrane, and the like in combination.
  • the carbonaceous material according to one aspect of the present invention has a benzene adsorption amount of 30 to 60%, a vitamin B12 adsorption amount of more than 50.0 mg / g, and is calculated from a nitrogen adsorption isotherm by the BJH method.
  • the pore volume of the mesopores is 0.13 to 0.30 cm 3 / g.
  • the specific surface area calculated by the BET method from the nitrogen adsorption isotherm is preferably 1200 to 2000 m 2 / g.
  • the average pore diameter calculated from the nitrogen adsorption isotherm is 1.85 to 1.90 nm. As a result, it is considered that PFAS can be removed more efficiently.
  • the conductivity measured by powder resistance measurement at a load of 12 kN is 3 to 9 S / cm. As a result, it is considered that the adsorption removal performance required for water purifiers can be realized at a high level.
  • the carbonaceous material is derived from a plant-based carbonaceous precursor. Therefore, it is considered that it is easy to make a carbonaceous material having excellent adsorption performance of the substance to be removed specified by the Household Goods Quality Labeling Law. Further, it is preferable that the plant-based carbonaceous precursor is coconut shell, and it is considered that a carbonaceous material capable of removing PFAS more efficiently can be realized.
  • the carbonaceous material has a Bed Volume of 12000 or more in removing performance of the fluorine-containing organic compound obtained under the following measurement conditions.
  • the removal performance is the amount of water flow (Bed Volume) obtained from the start of water flow to the breakthrough point. As a result, it is considered that the above-mentioned effects can be obtained more reliably.
  • the method for producing a carbonaceous material according to another aspect of the present invention is to use a flow furnace and to use an oxygen-containing gas separately from the flow gas introduced from the hearth, in a gas obtained by summing the flow gas and the oxygen-containing gas. It is characterized in that it is introduced into a flow furnace so that the oxygen concentration is 0.004 to 1% by volume. With such a configuration, an excellent carbonaceous material as described above can be obtained.
  • the water vapor concentration in the flowing gas introduced from the hearth is 10 to 40% by volume. As a result, it is considered that the coking coal can be activated efficiently.
  • the flow furnace is provided with a gas dispersion portion on the upstream side in the flow furnace when viewed in the main flow direction Z of the flow gas, and the position of the upstream end of the gas dispersion portion in the direction Z is 0 ( m)
  • the oxygen-containing gas can be introduced so as to satisfy the relationship of 0.5t1 ⁇ t2. preferable. Thereby, it is considered that the excellent carbonaceous material as described above can be obtained more reliably.
  • the water purification filter according to still another aspect of the present invention contains the carbonaceous material and the fibrous binder as described above, the CSF value of the fibrous binder is 10 to 150 mL, and 100 parts by mass of the carbonic material. On the other hand, it is characterized by containing 4 to 10 parts by mass of a fibrous binder.
  • the present invention also includes a water purifier containing the above-mentioned carbonaceous material, a fluorine-containing organic compound removing material made of the above-mentioned carbonaceous material, and a water purifier including the above-mentioned water purification filter.
  • the carbonaceous material to be measured was put into ion-exchanged water together with a surfactant, ultrasonically vibrated to prepare a uniform dispersion, and the measurement was carried out using Microtrac MT3200 manufactured by Microtrac Bell Co., Ltd.
  • a surfactant "polyoxyethylene (10) octylphenyl ether” manufactured by Wako Pure Chemical Industries, Ltd. was used. The analysis conditions are shown below.
  • Example 1 The particle size of coconut shell charcoal obtained by carbonizing coconut shells from the Philippines was adjusted from 30 mesh (0.5 mm) to 60 mesh (0.25 mm). 1 kg of this coconut shell charcoal was put into a fluidized activation furnace heated to 900 ° C., and 50 L / min of fluidized gas with 15% by volume of water vapor and 11% by volume of carbon dioxide from the furnace bed, 0.5% by volume of oxygen and nitrogen from the furnace side. An oxygen-containing gas of 99.5% by volume was introduced, and activation treatment was performed until the benzene adsorption amount became about 53.3% by weight (the oxygen concentration in the total gas introduced into the flow activation furnace was about 0). .045 volume%).
  • the flow activation furnace As the flow activation furnace, a furnace having a gas dispersion layer on the upstream side in the furnace when viewed in the main flow direction Z of the flow gas was used. Further, the relationship between the introduction position t2 of the oxygen-containing gas in the direction Z and the downstream end t1 of the gas dispersion layer satisfied the relationship of t1 ⁇ t2. That is, the oxygen-containing gas was introduced into the fluidized bed of the fluidized bed.
  • the obtained activated charcoal was washed with dilute hydrochloric acid, and then sufficiently washed with ion-exchanged water and dried to remove residual hydrochloric acid to obtain a carbonaceous material.
  • Table 1 shows the treatment conditions and the physical characteristics of the obtained carbonaceous material.
  • Example 2 The concentration of the oxygen-containing gas introduced during the activation treatment was changed to 1.0% by volume of oxygen and 99.0% by volume of nitrogen, and the activation treatment was carried out until the amount of benzene adsorbed reached 45.7% by weight.
  • a carbonaceous material was obtained in the same manner as in Example 1. Table 1 shows the treatment conditions and the physical characteristics of the obtained carbonaceous material.
  • Example 3 The concentration of the oxygen-containing gas introduced during the activation treatment was changed to 3.0% by volume of oxygen and 97.0% by volume of nitrogen, and the activation treatment was carried out until the amount of benzene adsorbed reached 52.6% by weight.
  • a carbonaceous material was obtained in the same manner as in Example 1. Table 1 shows the treatment conditions and the physical characteristics of the obtained carbonaceous material.
  • Example 1 A carbon material was obtained in the same manner as in Example 1 except that the activation treatment was carried out until the amount of benzene adsorbed was about 34.4% by weight. Table 1 shows the treatment conditions and the physical characteristics of the obtained carbonaceous material.
  • the obtained activated charcoal was washed with dilute hydrochloric acid, and then sufficiently washed with ion-exchanged water and dried to remove residual hydrochloric acid to obtain a carbonaceous material.
  • Table 1 shows the treatment conditions and the physical characteristics of the obtained carbonaceous material.
  • the obtained activated charcoal was washed with dilute hydrochloric acid, and then sufficiently washed with ion-exchanged water and dried to remove residual hydrochloric acid to obtain a carbonaceous material.
  • Table 1 shows the treatment conditions and the physical characteristics of the obtained carbonaceous material.
  • the obtained activated charcoal was washed with dilute hydrochloric acid, and then sufficiently washed with ion-exchanged water and dried to remove residual hydrochloric acid to obtain a carbonaceous material.
  • Table 1 shows the treatment conditions and the physical characteristics of the obtained carbonaceous material.
  • the obtained activated charcoal was washed with dilute hydrochloric acid, and then sufficiently washed with ion-exchanged water and dried to remove residual hydrochloric acid to obtain a carbonaceous material.
  • Table 1 shows the treatment conditions and the physical characteristics of the obtained carbonaceous material.
  • the filtration capacity test was carried out with the point where the removal rate was less than 80% as the breakthrough point. In this test, those with a filtration capacity of 12000 (Bed Volumes) or higher were accepted.
  • the water flow test conditions and results are shown in Table 2 and FIG.
  • PFAS could not be sufficiently removed in Comparative Examples 1 to 7 in which at least one of the benzene adsorption amount, the vitamin B12 adsorption amount and the mesopore pore volume did not satisfy the provisions of the present invention.
  • the removal rate was significantly less than 80% from the time of the start of water flow, and PFAS. The removability was 0.
  • the carbonaceous material of the present invention is particularly useful for removing fluorine-containing organic compounds. Therefore, the present invention has a wide range of industrial applicability in water purification techniques such as water purification filters and water purifiers.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nanotechnology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Geology (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Water Treatment By Sorption (AREA)
PCT/JP2021/038008 2020-10-23 2021-10-14 炭素質材料及びその製造方法、並びに、含フッ素有機化合物除去材、浄水用フィルター及び浄水器 Ceased WO2022085550A1 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2022507412A JP7060772B1 (ja) 2020-10-23 2021-10-14 炭素質材料及びその製造方法、並びに、含フッ素有機化合物除去材、浄水用フィルター及び浄水器
US18/032,608 US20230390731A1 (en) 2020-10-23 2021-10-14 Carbonaceous material and method for producing same, and fluorine-containing organic compound removing material, water purification filter, and water purifier
CN202180070915.8A CN116529207B (zh) 2020-10-23 2021-10-14 碳质材料及其制造方法、含氟有机化合物去除材料、净水用过滤器和净水器
EP21882691.5A EP4215483A4 (en) 2020-10-23 2021-10-14 CARBON-CONTAINING MATERIAL AND METHOD FOR PRODUCING SAME, AS WELL AS MATERIAL FOR REMOVING FLUORINE-CONTAINING ORGANIC COMPOUND, WATER PURIFICATION FILTER AND WATER PURIFIER
KR1020237013904A KR20230091907A (ko) 2020-10-23 2021-10-14 탄소질 재료 및 그 제조 방법, 그리고 함불소 유기 화합물 제거재, 정수용 필터 및 정수기
JP2022066387A JP2022093398A (ja) 2020-10-23 2022-04-13 炭素質材料及びその製造方法、並びに、含フッ素有機化合物除去材、浄水用フィルター及び浄水器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020177898 2020-10-23
JP2020-177898 2020-10-23

Publications (1)

Publication Number Publication Date
WO2022085550A1 true WO2022085550A1 (ja) 2022-04-28

Family

ID=81290852

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/038008 Ceased WO2022085550A1 (ja) 2020-10-23 2021-10-14 炭素質材料及びその製造方法、並びに、含フッ素有機化合物除去材、浄水用フィルター及び浄水器

Country Status (7)

Country Link
US (1) US20230390731A1 (https=)
EP (1) EP4215483A4 (https=)
JP (2) JP7060772B1 (https=)
KR (1) KR20230091907A (https=)
CN (1) CN116529207B (https=)
TW (1) TW202222705A (https=)
WO (1) WO2022085550A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024158002A1 (ja) 2023-01-25 2024-08-02 ユニチカ株式会社 フィルター

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN121358689A (zh) * 2023-06-15 2026-01-16 株式会社可乐丽 活性炭
JP7453463B1 (ja) * 2023-11-29 2024-03-19 大阪ガスケミカル株式会社 炭素質材料及びその製造方法、並びに吸着フィルター
WO2025173589A1 (ja) * 2024-02-16 2025-08-21 株式会社クラレ 成型体ならびにパーフルオロアルキル化合物および／またはポリフルオロアルキル化合物の除去方法
JP7847728B1 (ja) * 2026-01-13 2026-04-17 大阪ガスケミカル株式会社 活性炭、及びリボフラビン除去方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60137811A (ja) * 1983-12-22 1985-07-22 Toho Rayon Co Ltd 浄水用活性炭素繊維
JP2003290654A (ja) * 2002-04-01 2003-10-14 Kuraray Co Ltd 活性炭素繊維及びその製造方法、並びに浄水器用カートリッジ及び浄水器
JP2010158662A (ja) 2008-07-04 2010-07-22 Daikin Ind Ltd 含フッ素界面活性剤含有水溶液の処理方法
JP2013220413A (ja) * 2012-04-19 2013-10-28 Futamura Chemical Co Ltd 浄水器用活性炭及びこれを用いた活性炭カートリッジ
WO2017199717A1 (ja) * 2016-05-17 2017-11-23 株式会社クラレ 活性炭、並びにそれを用いた吸着フィルターおよび浄水器
JP2020177898A (ja) 2019-04-19 2020-10-29 广州欧享科技有限公司 水晶セード
WO2020218370A1 (ja) * 2019-04-26 2020-10-29 株式会社クラレ 炭素質材料及びその製造方法、並びに浄水用フィルター及び浄水器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6034674A (ja) * 1983-08-02 1985-02-22 河添　邦太朗 繊維状活性炭の製造方法
JPH09241014A (ja) * 1996-03-08 1997-09-16 Agency Of Ind Science & Technol 活性炭の製造方法
JP4934177B2 (ja) * 2009-08-28 2012-05-16 水ｉｎｇ株式会社 浄水処理装置と方法
JP6599888B2 (ja) * 2014-11-19 2019-10-30 株式会社クラレ 吸着フィルター
CN109565049B (zh) * 2016-08-16 2022-05-17 株式会社可乐丽 非水电解质二次电池的负极活性物质用的碳质材料、非水电解质二次电池用负极、非水电解质二次电池以及碳质材料的制造方法
EP3810549B1 (en) * 2018-08-14 2024-05-01 Evoqua Water Technologies LLC Modified activated carbon and methods of using same
CN113727774A (zh) * 2019-04-03 2021-11-30 卡尔冈碳素公司 全氟烷基和多氟烷基吸着剂材料和使用方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60137811A (ja) * 1983-12-22 1985-07-22 Toho Rayon Co Ltd 浄水用活性炭素繊維
JP2003290654A (ja) * 2002-04-01 2003-10-14 Kuraray Co Ltd 活性炭素繊維及びその製造方法、並びに浄水器用カートリッジ及び浄水器
JP2010158662A (ja) 2008-07-04 2010-07-22 Daikin Ind Ltd 含フッ素界面活性剤含有水溶液の処理方法
JP2013220413A (ja) * 2012-04-19 2013-10-28 Futamura Chemical Co Ltd 浄水器用活性炭及びこれを用いた活性炭カートリッジ
WO2017199717A1 (ja) * 2016-05-17 2017-11-23 株式会社クラレ 活性炭、並びにそれを用いた吸着フィルターおよび浄水器
JP2020177898A (ja) 2019-04-19 2020-10-29 广州欧享科技有限公司 水晶セード
WO2020218370A1 (ja) * 2019-04-26 2020-10-29 株式会社クラレ 炭素質材料及びその製造方法、並びに浄水用フィルター及び浄水器

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
See also references of EP4215483A4
TAMAI HISASHI, KAKII TAKUHIRO, HIROTA YOSHIFUMI, KUMAMOTO TOMIO, YASUDA HAJIME: "Synthesis of Extremely Large Mesoporous Activated Carbon and Its Unique Adsorption for Giant Molecules", CHEMISTRY OF MATERIALS, AMERICAN CHEMICAL SOCIETY, US, vol. 8, no. 2, 1 January 1996 (1996-01-01), US , pages 454 - 462, XP055924388, ISSN: 0897-4756, DOI: 10.1021/cm950381t *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024158002A1 (ja) 2023-01-25 2024-08-02 ユニチカ株式会社 フィルター
EP4656600A1 (en) 2023-01-25 2025-12-03 Unitika Ltd. Filter

Also Published As

Publication number Publication date
JP7060772B1 (ja) 2022-04-26
JPWO2022085550A1 (https=) 2022-04-28
TW202222705A (zh) 2022-06-16
EP4215483A4 (en) 2024-10-30
CN116529207B (zh) 2025-05-23
EP4215483A1 (en) 2023-07-26
US20230390731A1 (en) 2023-12-07
KR20230091907A (ko) 2023-06-23
CN116529207A (zh) 2023-08-01
JP2022093398A (ja) 2022-06-23

Similar Documents

Publication Publication Date Title
JP7060772B1 (ja) 炭素質材料及びその製造方法、並びに、含フッ素有機化合物除去材、浄水用フィルター及び浄水器
JP6829796B1 (ja) 炭素質材料及びその製造方法、並びに浄水用フィルター及び浄水器
JP7058379B1 (ja) 炭素質材料及びその製造方法、並びに浄水用フィルター及び浄水器
JP2025087660A (ja) 炭素質材料及びその製造方法、吸着フィルター、浄水器カートリッジ、浄水器、並びに水浄化設備
WO2025115888A1 (ja) 炭素質材料及びその製造方法、吸着フィルター、浄水器カートリッジ、浄水器、並びに水浄化設備
WO2025115890A1 (ja) 炭素質材料及びその製造方法、並びに吸着フィルター
KR20260059600A (ko) 탄소질 재료 및 그 제조 방법, 흡착 필터, 정수기 카트리지, 정수기, 그리고 물 정화 설비
CN122003294A (zh) 碳质材料及其制造方法、吸附过滤器、净水器滤芯、净水器及净水设备
KR20260061422A (ko) 탄소질 재료 및 그 제조 방법, 흡착 필터, 정수기 카트리지, 정수기, 그리고 물 정화 설비
WO2019235043A1 (ja) 活性炭成形体
KR20260061423A (ko) 탄소질 재료 및 그 제조 방법, 그리고 흡착 필터

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2022507412

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21882691

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 202180070915.8

Country of ref document: CN

ENP Entry into the national phase

Ref document number: 20237013904

Country of ref document: KR

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2021882691

Country of ref document: EP

Effective date: 20230420

NENP Non-entry into the national phase

Ref country code: DE

WWG Wipo information: grant in national office

Ref document number: 202180070915.8

Country of ref document: CN