CN111714962A - Preparation method of nano-filtration medium with adsorption capacity decomposition function - Google Patents

Preparation method of nano-filtration medium with adsorption capacity decomposition function Download PDF

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CN111714962A
CN111714962A CN201910217955.5A CN201910217955A CN111714962A CN 111714962 A CN111714962 A CN 111714962A CN 201910217955 A CN201910217955 A CN 201910217955A CN 111714962 A CN111714962 A CN 111714962A
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nano
mgc2o
precursor
oac
putting
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邓勇华
席如帆
余昌旺
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Shanghai Feizuo Environmental Protection Technology Co ltd
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    • 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
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/81—Solid phase processes
    • 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
    • B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • B01J20/041—Oxides or hydroxides
    • 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
    • B01J20/28004—Sorbent size or size distribution, e.g. particle size
    • B01J20/28007—Sorbent size or size distribution, e.g. particle size with size in the range 1-100 nanometers, e.g. nanosized particles, nanofibers, nanotubes, nanowires or the like
    • 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
    • B01J20/28014—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 form
    • B01J20/28016—Particle form
    • 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
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • 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
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/112—Metals or metal compounds not provided for in B01D2253/104 or B01D2253/106
    • B01D2253/1124—Metal oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708—Volatile organic compounds V.O.C.'s
    • 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
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
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  • Inorganic Chemistry (AREA)
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  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The invention relates to the technical field of filtration, in particular to a preparation method of a nano-filtration medium with adsorption capacity decomposition function, which comprises the following steps: s1, preparing raw materials Mg (OAc) 2.4H 2O and H2C2O 4.2H2O according to the mixture ratio; s2, putting Mg (OAc) 2.4H 2O and H2C2O 4.2H2O into a stirrer, heating and stirring, and fully reacting to obtain a precursor MgC2O 4.2H2O; s3, putting the precursor MgC2O 4.2H2O into an oven for drying; and S4, drying, and then putting the precursor MgC2O 4.2H2O into a furnace for calcining to obtain the rice filter medium MgO 2. The nano filter medium prepared by the invention has the functions of adsorbing and decomposing inorganic waste gas, adsorbing and decomposing formaldehyde, adsorbing and decomposing bacteria and viruses in air, filtering and adsorbing heavy metals in wastewater, and has the same function in a high-temperature environment; the prepared MgO2 has the particle size of only about 15nm, uniform particle size distribution, no agglomeration phenomenon, no solvent required in the reaction, high yield and simple and easily controlled reaction conditions.

Description

Preparation method of nano-filtration medium with adsorption capacity decomposition function
Technical Field
The invention relates to the technical field of filtration, in particular to a preparation method of a nano-filtration medium with an adsorption capacity decomposition function.
Background
A porous material that allows the working medium to pass through and also retains solid particles or liquid droplets therein for separation or purification purposes is referred to as a filter medium. The device is a key component on the filter, and determines the separation precision and efficiency of the filtering operation and directly influences the production strength and power consumption of the filter.
The filter medium is selected taking into account the content of solid particles in the suspension, the distribution range of the particle size, the influence of the filter medium on the clarity of the filtrate and the filtration rate. In addition, the factors such as the selection of the filtering equipment, the corrosiveness of the filtrate, the temperature and the pressure of the filtering operation are involved.
In the prior art, in a filter medium, a filter screen and filter cloth can only filter at normal temperature, the filter only plays a role in purifying dust, and active carbon can purify air, but can only be carried out at normal temperature, and the sterilization effect is poor.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a preparation method of a nano filter medium with an adsorption capacity decomposition function.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a nano-filtration medium with adsorption capacity decomposition function comprises the following steps:
s1, preparing raw materials Mg (OAc) 2.4H 2O and H2C2O 4.2H2O according to the mixture ratio;
s2, putting Mg (OAc) 2.4H 2O and H2C2O 4.2H2O into a stirrer, heating and stirring, and fully reacting to obtain a precursor MgC2O 4.2H2O;
s3, putting the precursor MgC2O 4.2H2O into an oven for drying;
and S4, drying, and then putting the precursor MgC2O 4.2H2O into a furnace for calcining to obtain the rice filter medium MgO 2.
Preferably, in the S1, the ratio of Mg (OAc) 2.4H 2O to H2C2O 4.2H 2O is 40-50%: 45 to 60 percent.
Preferably, in S2, the rotation speed of the stirrer is 1600-1800r/min, and the heating temperature is 50-60 ℃.
Preferably, in S2, the chemical reaction is: mg (OAc) 2.4H 2O + H2C2O 4.2H 2O → MgC2O 4.2H 2O.
Preferably, in S3, the oven temperature: 75-85 deg.C for 10-20 min.
Preferably, in the S4, the furnace temperature is 550-700 ℃, and the time is 30-50 min.
Preferably, in S4, the chemical reaction is: MgC2O4 & 2H2O → MgO 2.
Compared with the prior art, the invention provides a preparation method of a nano-filtration medium with an adsorption capacity decomposition function, which has the following beneficial effects:
the prepared MgO2 has the particle size of only about 15nm, uniform particle size distribution, no agglomeration phenomenon, no solvent required in the reaction, high yield, simple and easily controlled reaction conditions.
The prepared nano filter medium has the functions of adsorbing and decomposing inorganic waste gas, adsorbing and decomposing formaldehyde and adsorbing and decomposing bacteria and viruses in air, can be used for filtering and adsorbing heavy metals in wastewater, and also has the same function in a high-temperature environment.
Drawings
FIG. 1 is a schematic structural diagram of the whole process for preparing a nano-filtration medium with adsorptive capacity decomposition function according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1, embodiment 1:
a preparation method of a nano-filtration medium with adsorption capacity decomposition function comprises the following steps:
s1, preparing raw materials Mg (OAc) 2.4H 2O and H2C2O 4.2H2O according to the mixture ratio;
s2, putting Mg (OAc) 2.4H 2O and H2C2O 4.2H2O into a stirrer, heating and stirring, and fully reacting to obtain a precursor MgC2O 4.2H2O;
s3, putting the precursor MgC2O 4.2H2O into an oven for drying;
and S4, drying, and then putting the precursor MgC2O 4.2H2O into a furnace for calcining to obtain the rice filter medium MgO 2.
In the S1, the ratio of Mg (OAc) 2.4H 2O to H2C2O 4.2H 2O is 40%: 45 percent.
In the step S2, the rotating speed of the stirrer is 1600r/min, and the heating temperature is 50 ℃.
In S2, the chemical reaction occurs as follows: mg (OAc) 2.4H 2O + H2C2O 4.2H 2O → MgC2O 4.2H 2O.
In S3, the oven temperature: at 75 deg.C for 10 min.
In the step S4, the furnace burning temperature is 550 ℃ and the time is 30 min.
In S4, the chemical reaction occurs as follows: MgC2O4 & 2H2O → MgO 2.
Example 2: a preparation method of a nano-filtration medium with adsorption capacity decomposition function comprises the following steps:
s1, preparing raw materials Mg (OAc) 2.4H 2O and H2C2O 4.2H2O according to the mixture ratio;
s2, putting Mg (OAc) 2.4H 2O and H2C2O 4.2H2O into a stirrer, heating and stirring, and fully reacting to obtain a precursor MgC2O 4.2H2O;
s3, putting the precursor MgC2O 4.2H2O into an oven for drying;
and S4, drying, and then putting the precursor MgC2O 4.2H2O into a furnace for calcining to obtain the rice filter medium MgO 2.
In the S1, the proportion of Mg (OAc) 2.4H 2O and H2C2O 4.2H 2O is 50%: 60 percent.
In the step S2, the rotation speed of the stirrer is 1800r/min, and the heating temperature is 60 ℃.
In S2, the chemical reaction occurs as follows: mg (OAc) 2.4H 2O + H2C2O 4.2H 2O → MgC2O 4.2H 2O.
In S3, the oven temperature: at 85 deg.C for 20 min.
In the S4, the furnace temperature is 550-700 ℃, and the time is 50 min.
In S4, the chemical reaction occurs as follows: MgC2O4 & 2H2O → MgO 2.
Example 3: a preparation method of a nano-filtration medium with adsorption capacity decomposition function comprises the following steps:
s1, preparing raw materials Mg (OAc) 2.4H 2O and H2C2O 4.2H2O according to the mixture ratio;
s2, putting Mg (OAc) 2.4H 2O and H2C2O 4.2H2O into a stirrer, heating and stirring, and fully reacting to obtain a precursor MgC2O 4.2H2O;
s3, putting the precursor MgC2O 4.2H2O into an oven for drying;
and S4, drying, and then putting the precursor MgC2O 4.2H2O into a furnace for calcining to obtain the rice filter medium MgO 2.
In the S1, the proportion of Mg (OAc) 2.4H 2O and H2C2O 4.2H 2O is 40-50%: 45 to 60 percent.
In the step S2, the rotation speed of the stirrer is 1700r/min, and the heating temperature is 55 ℃.
In S2, the chemical reaction occurs as follows: mg (OAc) 2.4H 2O + H2C2O 4.2H 2O → MgC2O 4.2H 2O.
In S3, the oven temperature: 80 deg.C for 115 min.
In the step S4, the furnace burning temperature is 600 ℃ and the time is 55 min.
In S4, the chemical reaction occurs as follows: MgC2O4 & 2H2O → MgO 2.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A preparation method of a nano-filtration medium with adsorption capacity decomposition function is characterized by comprising the following steps:
s1, preparing raw materials Mg (OAc) 2.4H 2O and H2C2O 4.2H2O according to the mixture ratio;
s2, putting Mg (OAc) 2.4H 2O and H2C2O 4.2H2O into a stirrer, heating and stirring, and fully reacting to obtain a precursor MgC2O 4.2H2O;
s3, putting the precursor MgC2O 4.2H2O into an oven for drying;
and S4, drying, and then putting the precursor MgC2O 4.2H2O into a furnace for calcining to obtain the rice filter medium MgO 2.
2. The method for preparing the nano-filtration medium with the adsorption capacity decomposition function according to claim 1, wherein in the S1, the ratio of Mg (OAc) 2.4H 2O to H2C2O 4.2H 2O is 40-50%: 45 to 60 percent.
3. The method as claimed in claim 1, wherein in S2, the stirring speed is 1600-1800r/min, and the heating temperature is 50-60 ℃.
4. The method for preparing a nano-filtration medium with adsorptive capacity decomposition function according to claim 1, wherein in S2, the chemical reaction is:
Mg(OAc)2·4H2O+H2C2O4·2H2O→MgC2O4·2H2O。
5. the method for preparing a nano-filtration medium with adsorptive capacity decomposition function according to claim 1, wherein in S3, the oven temperature is: 75-85 deg.C for 10-20 min.
6. The method as claimed in claim 1, wherein the temperature of the furnace in S4 is 550-700 ℃ for 30-50 min.
7. The method for preparing a nano-filtration medium with adsorptive capacity decomposition function according to claim 1, wherein in S4, the chemical reaction is:
MgC2O4·2H2O→MgO2。
CN201910217955.5A 2019-03-21 2019-03-21 Preparation method of nano-filtration medium with adsorption capacity decomposition function Withdrawn CN111714962A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1872689A (en) * 2006-06-28 2006-12-06 北京大学 Method for preparing magnesia with high specific surface
US20070219081A1 (en) * 2006-03-15 2007-09-20 Council Of Scientific & Industrial Research Process for the preparation of magnesia (MgO)
CN102502723A (en) * 2011-10-11 2012-06-20 安徽工业大学 Method for preparing magnesium oxide nano powder material
CN109292800A (en) * 2018-11-12 2019-02-01 四川工程职业技术学院 A kind of Mgo Nanopowder preparation method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070219081A1 (en) * 2006-03-15 2007-09-20 Council Of Scientific & Industrial Research Process for the preparation of magnesia (MgO)
CN1872689A (en) * 2006-06-28 2006-12-06 北京大学 Method for preparing magnesia with high specific surface
CN102502723A (en) * 2011-10-11 2012-06-20 安徽工业大学 Method for preparing magnesium oxide nano powder material
CN109292800A (en) * 2018-11-12 2019-02-01 四川工程职业技术学院 A kind of Mgo Nanopowder preparation method

Non-Patent Citations (7)

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Title
张静等: "草酸镁的合成与应用研究", 《化学工程师》 *
王纯等: "由碱式碳酸镁制备过氧化镁", 《化学试剂》 *
管洪波等: "低温固相法制备高比表面积的纳米MgO", 《催化学报》 *
管洪波等: "高比表面纳米MgO的制备及其影响因素研究", 《物理化学学报》 *
马世昌主编: "《基础化学反应》", 31 January 2003, 陕西科学技术出版社 *
马玉刚等: "焙烧温度对共沉淀法合成MgO催化剂性能的影响", 《广东石油化工学院学报》 *
黄玉媛等编: "《精细化工配方常用原料手册》", 31 March 1998, 广东科技出版社 *

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