CN114733480A - Modified biochar and preparation method thereof - Google Patents
Modified biochar and preparation method thereof Download PDFInfo
- Publication number
- CN114733480A CN114733480A CN202210315013.2A CN202210315013A CN114733480A CN 114733480 A CN114733480 A CN 114733480A CN 202210315013 A CN202210315013 A CN 202210315013A CN 114733480 A CN114733480 A CN 114733480A
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- China
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- waste paper
- modified biochar
- powder
- hydrogen peroxide
- ferric oxide
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- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000010893 paper waste Substances 0.000 claims abstract description 52
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 15
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000007598 dipping method Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000000197 pyrolysis Methods 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 6
- 239000000725 suspension Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 238000003763 carbonization Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 4
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000003516 soil conditioner Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- 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
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/04—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only applied in a physical form other than a solution or a grout, e.g. as granules or gases
-
- 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
- B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Dispersion Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Materials Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of modified biochar, in particular to modified biochar and a preparation method thereof. The preparation method comprises the following steps: s1, pretreating the waste paper into powder; s2, dipping the pretreated waste paper powder into a mixed suspension of hydrogen peroxide and ferric oxide, and heating and drying; and S3, adding the substances dried in the step S2 into volcanic mud, uniformly mixing, and performing pyrolysis to obtain the modified biochar. The method effectively utilizes the waste paper scraps, and the prepared modified biochar has large specific surface area and strong adsorption capacity.
Description
Technical Field
The invention relates to the technical field of modified biochar, in particular to modified biochar and a preparation method thereof.
Background
The method for modifying the biochar mainly comprises oxidizing the surface of an oxidant, impregnating a metal oxide and the like. The aim is to enhance the functionality of the original biochar, so that the biochar has larger specific surface area, oxygen-containing functional groups and the like. The biochar can be used as a soil conditioner, can loosen and prevent soil from hardening, enhances the water and fertilizer retention capacity, can improve the structure and the fertility of polluted soil, and has important influence on the environment conservation of pollutants. After the biochar is modified, the surface acidic functional groups are increased, and the biochar can chelate and adsorb bioavailable heavy metal, is favorable for improving the adsorption capacity of soil to the heavy metal, provides extra guarantee for reducing the bioavailability of the heavy metal in the polluted soil, and is favorable for the growth of multiple crops. Therefore, the charcoal is a relatively hot research project at present during modification.
Disclosure of Invention
The invention aims to solve the technical problem of providing a modified biochar and a preparation method thereof, which effectively utilize waste paper scraps and have large specific surface area and strong adsorption capacity.
In order to solve the technical problems, the invention adopts the following technical scheme:
the modified biochar is prepared from waste paper and volcanic mud as raw materials by mixing with hydrogen peroxide and ferric oxide for modification, and performing carbonization and pyrolysis.
The preparation method of the modified biochar comprises the following steps:
s1, pretreating the waste paper into powder;
s2, dipping the pretreated waste paper powder into a mixed suspension of hydrogen peroxide and ferric oxide, and heating and drying;
and S3, adding the substances dried in the step S2 into volcanic mud, uniformly mixing, and performing pyrolysis to obtain the modified biochar.
Preferably, the method for preprocessing the waste paper in step S1 is specifically: crushing and sieving the waste paper, immersing the waste paper into alkali liquor, fully stirring the waste paper, and washing the waste paper with deionized water until the pH value is stable; and then immersing in acid liquor, fully stirring, and drying at 130-150 ℃ to obtain waste paper powder.
Preferably, the mixture in the step 2 is prepared from (8-10) waste paper powder, hydrogen peroxide and ferric oxide in a mass ratio of: (2-6): (1-5) mixing.
Preferably, the mixing mass ratio of the mixture and the volcanic mud in the step S3 is (1-5): (1-3).
The invention has the beneficial effects that:
according to the invention, waste paper is used as a raw material, modification is carried out after carbonization, and then modification is carried out by combining volcanic mud, so that the obtained modified charcoal has a large specific surface area, and the volcanic mud is added, so that the adsorption capacity is better; and waste paper can be well utilized for secondary utilization of waste, so that the waste paper is more environment-friendly.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
Example 1
1. Crushing and sieving the waste paper, immersing the waste paper into KOH alkali liquor, fully stirring the waste paper, and washing the waste paper with deionized water until the pH value is stable; then soaking the waste paper into HCl acid solution, fully stirring and drying the waste paper at 130 ℃ to obtain waste paper powder.
2. Dipping the pretreated waste paper powder into mixed suspension of hydrogen peroxide and ferric oxide, wherein the mass ratio of the waste paper powder to the hydrogen peroxide to the ferric oxide is 8: 4: and 3, heating and drying.
3. Adding the dried mixed substance into volcanic mud, wherein the mixing mass ratio of the mixture to the volcanic mud is 5: 2, uniformly mixing and pyrolyzing to obtain the modified biochar.
Example 2
2. Crushing and sieving the waste paper, immersing the waste paper into KOH alkali liquor, fully stirring the waste paper, and washing the waste paper with deionized water until the pH value is stable; then the waste paper is immersed in HCl acid solution, fully stirred and dried at 140 ℃ to obtain waste paper powder.
2. Dipping the pretreated waste paper powder into mixed suspension of hydrogen peroxide and ferric oxide, wherein the mass ratio of the waste paper powder to the hydrogen peroxide to the ferric oxide is 9: 6: and 5, heating and drying.
3. Adding the dried mixed substance into volcanic mud, wherein the mixing mass ratio of the mixture to the volcanic mud is 4: 1, uniformly mixing, and then carrying out pyrolysis to obtain the modified biochar.
Example 3
3. Crushing and sieving the waste paper, immersing the waste paper into KOH alkali liquor, fully stirring the waste paper, and washing the waste paper with deionized water until the pH value is stable; then the waste paper is immersed in HCl acid solution, fully stirred and dried at 140 ℃ to obtain waste paper powder.
2. Dipping the pretreated waste paper powder into mixed suspension of hydrogen peroxide and ferric oxide, wherein the mass ratio of the waste paper powder to the hydrogen peroxide to the ferric oxide is 10: 6: and 5, heating and drying.
3. Adding the dried mixed substance into volcanic mud, wherein the mixing mass ratio of the mixture to the volcanic mud is 3: 2, uniformly mixing and pyrolyzing to obtain the modified biochar.
All technical features in the embodiment can be subjected to appearance modification according to actual needs.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Claims (5)
1. A modified biochar is characterized in that: the modified biochar is prepared from waste paper and volcanic mud as raw materials by mixing and modifying with hydrogen peroxide and ferric oxide for carbonization and pyrolysis.
2. The method for preparing modified biochar according to claim 1, characterized in that: the method comprises the following steps:
s1, pretreating the waste paper into powder;
s2, dipping the pretreated waste paper powder into a mixed suspension of hydrogen peroxide and ferric oxide, and heating and drying;
and S3, adding the substances dried in the step S2 into volcanic mud, uniformly mixing, and performing pyrolysis to obtain the modified biochar.
3. The method for preparing modified biochar according to claim 2, wherein the method comprises the following steps: the method for preprocessing the waste paper in the step S1 specifically includes: crushing and sieving the waste paper, immersing the waste paper into alkali liquor, fully stirring the waste paper, and washing the waste paper with deionized water until the pH value is stable; and then immersing in acid liquor, fully stirring, and drying at 130-150 ℃ to obtain waste paper powder.
4. The method for preparing modified biochar according to claim 2, wherein the method comprises the following steps: in the step 2, the mixture comprises the following components in parts by mass (8-10) of waste paper powder, hydrogen peroxide and ferric oxide: (2-6): (1-5) mixing.
5. The method for preparing modified biochar according to claim 2, wherein the method comprises the following steps: in the step S3, the mixing mass ratio of the mixture to the volcanic mud is (1-5): (1-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210315013.2A CN114733480A (en) | 2022-03-28 | 2022-03-28 | Modified biochar and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210315013.2A CN114733480A (en) | 2022-03-28 | 2022-03-28 | Modified biochar and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114733480A true CN114733480A (en) | 2022-07-12 |
Family
ID=82277381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210315013.2A Pending CN114733480A (en) | 2022-03-28 | 2022-03-28 | Modified biochar and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114733480A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104069810A (en) * | 2014-07-03 | 2014-10-01 | 浙江省海洋开发研究院 | Method for preparing activated charcoal from paper mill sludge and pine through co-pyrolysis |
| CN106732361A (en) * | 2016-12-21 | 2017-05-31 | 福建师范大学 | A kind of preparation method of the sludge base charcoal of the paper powder that adulterates |
| CN106955665A (en) * | 2016-01-12 | 2017-07-18 | 深圳市中兴生态环保研究院 | Sewage haze cleanser micro-nano carbon and volcanic mud composite and preparation method thereof |
| CN107254313A (en) * | 2017-06-29 | 2017-10-17 | 中南大学 | As polluted soil passivator and preparation method, the method for administering As polluted soil |
| CN108408818A (en) * | 2018-03-27 | 2018-08-17 | 中国科学院武汉岩土力学研究所 | A kind of industrial pollution area building substrate contamination object separation purifying system |
| CN110257080A (en) * | 2019-07-15 | 2019-09-20 | 东华大学 | A kind of acid soil renovation agent and its preparation method and application |
| CN110756168A (en) * | 2019-12-04 | 2020-02-07 | 河南师范大学 | Preparation method and application of modified biochar for adsorbing tetracycline in wastewater |
| CN111530421A (en) * | 2020-05-13 | 2020-08-14 | 内蒙古民族大学 | Biochar for heavy metal adsorption and preparation method thereof |
| CN113145076A (en) * | 2021-05-13 | 2021-07-23 | 沈阳农业大学 | Preparation method of modified biochar and modified biochar |
| CN113634229A (en) * | 2021-09-02 | 2021-11-12 | 浙江理工大学绍兴柯桥研究院有限公司 | Preparation method and application of biochar with selective adsorption-desorption capacity |
-
2022
- 2022-03-28 CN CN202210315013.2A patent/CN114733480A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104069810A (en) * | 2014-07-03 | 2014-10-01 | 浙江省海洋开发研究院 | Method for preparing activated charcoal from paper mill sludge and pine through co-pyrolysis |
| CN106955665A (en) * | 2016-01-12 | 2017-07-18 | 深圳市中兴生态环保研究院 | Sewage haze cleanser micro-nano carbon and volcanic mud composite and preparation method thereof |
| CN106732361A (en) * | 2016-12-21 | 2017-05-31 | 福建师范大学 | A kind of preparation method of the sludge base charcoal of the paper powder that adulterates |
| CN107254313A (en) * | 2017-06-29 | 2017-10-17 | 中南大学 | As polluted soil passivator and preparation method, the method for administering As polluted soil |
| CN108408818A (en) * | 2018-03-27 | 2018-08-17 | 中国科学院武汉岩土力学研究所 | A kind of industrial pollution area building substrate contamination object separation purifying system |
| CN110257080A (en) * | 2019-07-15 | 2019-09-20 | 东华大学 | A kind of acid soil renovation agent and its preparation method and application |
| CN110756168A (en) * | 2019-12-04 | 2020-02-07 | 河南师范大学 | Preparation method and application of modified biochar for adsorbing tetracycline in wastewater |
| CN111530421A (en) * | 2020-05-13 | 2020-08-14 | 内蒙古民族大学 | Biochar for heavy metal adsorption and preparation method thereof |
| CN113145076A (en) * | 2021-05-13 | 2021-07-23 | 沈阳农业大学 | Preparation method of modified biochar and modified biochar |
| CN113634229A (en) * | 2021-09-02 | 2021-11-12 | 浙江理工大学绍兴柯桥研究院有限公司 | Preparation method and application of biochar with selective adsorption-desorption capacity |
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