CN110562975B - Activated carbon-molecular sieve prepared from cow dung and coal fly ash, preparation method and application thereof - Google Patents
Activated carbon-molecular sieve prepared from cow dung and coal fly ash, preparation method and application thereof Download PDFInfo
- Publication number
- CN110562975B CN110562975B CN201910949659.4A CN201910949659A CN110562975B CN 110562975 B CN110562975 B CN 110562975B CN 201910949659 A CN201910949659 A CN 201910949659A CN 110562975 B CN110562975 B CN 110562975B
- Authority
- CN
- China
- Prior art keywords
- fly ash
- molecular sieve
- coal fly
- cow dung
- activated carbon
- 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.)
- Active
Links
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
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
-
- 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
-
- 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
- C01B32/342—Preparation characterised by non-gaseous activating agents
- C01B32/348—Metallic compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
-
- 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
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Carbon And Carbon Compounds (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses an activated carbon-molecular sieve prepared from cow dung and coal fly ash, a preparation method and application thereof, wherein the activated carbon-molecular sieve prepared from cow dung and coal fly ash comprises two components of activated carbon and molecular sieve, is microporous powder, has a particle size of 100-180 mu m and a specific surface area of 400-600 m2(ii) in terms of/g. The activated carbon-molecular sieve prepared from the cow dung and the coal fly ash can be used for adsorbing heavy metal ions in wastewater. The invention takes the cow dung and the coal fly ash as the raw materials for preparing the carbon-molecular sieve, realizes the high-value resource utilization of the cow dung and the coal fly ash, and has the specific surface area of 600m2More than g, 2.6-5.0 times of that of the active carbon-molecular sieve prepared by directly adopting coal fly ash. The composite adsorbent is used for adsorbing heavy metal ions in wastewater, and the adsorption capacity can reach more than 4.5mmol/g, which is 2.2-3.2 times of that of the activated carbon-molecular sieve prepared without adding cow dung.
Description
Technical Field
The invention relates to a method for comprehensively utilizing cow dung wastes and coal fly ash.
Background
Coal fly ash is low-value waste generated in the coal industrial utilization process, particularly the coal gasification process, and each coal chemical industry enterprise generates a large amount of low-value coal fly ash which cannot be utilized every year, and the coal fly ash is often buried, so that serious resource waste and environmental pollution are caused. Therefore, how to utilize the coal fly ash has important significance for solving the problems of resource utilization of solid wastes of coal chemical enterprises, reduction of treatment cost and environmental pollution. The method for directly preparing the molecular sieve-activated carbon composite material from the coal fly ash is an effective means, the process does not need to separate silicon from aluminum and residual carbon, and can fully utilize the advantages of the silicon and the residual carbon, namely the high specific surface area of the activated carbon and the strong ion exchange capacity and the acidity and alkalinity of the molecular sieve. However, due to the lower carbon content and extremely low volatile content of coal fly ash, the specific surface area of the composite materials tends to be low, limiting their further utilization and development. Generally, the process of preparing the activated carbon-molecular sieve composite material from the coal fly ash comprises the steps of mixing the coal fly ash with NaOH, carrying out high-temperature melting to activate carbon and melt silicon and aluminum in ash, crushing the mixture, adding a silicon source or an aluminum source to regulate the silicon-aluminum ratio, then aging in distilled water, carrying out hydrothermal treatment on the aged mixture, filtering and washing to be neutral to obtain the activated carbon-molecular sieve composite material, wherein the prepared composite material usually has a lower specific surface area due to lower residual carbon content and volatile components of the coal fly ash, and the utilization value of the composite material is reduced.
Cow dung is biomass waste generated in the breeding process, and resource utilization of cow dung is also a difficult problem in a cow and sheep breeding area. However, the fly ash contains relatively high volatile components, carbon content and alkali metal and alkaline earth metal content, so that the carbon content in the fly ash can be supplemented and regulated, the silica-alumina ratio in the fly ash can be changed, and the use amount of alkali in the preparation of the molecular sieve-activated carbon material can be reduced due to the high alkali metal content.
Therefore, whether the two materials can be used as raw materials for preparing the carbon-molecular sieve composite material or not has very important social and economic significance.
Disclosure of Invention
The invention aims to disclose an activated carbon-molecular sieve prepared from cow dung and coal fly ash, a preparation method and application thereof, so as to meet the requirements of people.
The activated carbon-molecular sieve prepared from the cow dung and the coal fly ash comprises two components of activated carbon and molecular sieve, is microporous powder, has the particle size of 100-180 mu m and the specific surface area of 400-600 m2/g;
The activated carbon-molecular sieve prepared from the cow dung and the coal fly ash comprises the following components in percentage by weight:
and unavoidable impurities, e.g. K2O and TiO2Etc.;
the coal fly ash refers to gasification fly ash, is derived from the coal chemical industry gasification process, and comprises the following components:
said other impurities being e.g. K2O and TiO2Etc.;
the preparation method of the activated carbon-molecular sieve prepared from the cow dung and the coal fly ash comprises the following steps:
(1) mixing coal fly ash, cow dung and NaOH, and activating for 1-4 hours at 700-900 ℃ in an inert atmosphere;
the mass ratio of the total mass of the coal fly ash and the cow dung to the NaOH is as follows: 1: 1-1: 3;
coal fly ash, dry cow dung and NaOH are 1: 1-1: 3;
the term "dry-based cow dung" refers to cow dung containing no moisture
(2) And (2) mixing the product obtained in the step (1) with water, carrying out hydrothermal treatment at 80-120 ℃ for 8-24 hours, and then collecting the activated carbon-molecular sieve prepared from the cow dung and the coal fly ash from the system.
The activated carbon-molecular sieve can be used for adsorbing heavy metal ions in wastewater, and the metal ions comprise Ni2+、Cu2+、Pb2+Or Cd2+Etc.; the application method is conventional, such as the method reported in the literature (Journal of Hazardous Materials 160(2008) 148-.
The invention has the beneficial effects that:
cow dung and coal fly ash are jointly used as raw materials for preparing the carbon-molecular sieve composite material, and the structural property and the adsorption catalysis performance of the activated carbon-molecular sieve are regulated and controlled by adjusting the proportion of the cow dung and the coal fly ash so as to realize high-value resource utilization of the cow dung and the coal fly ash. The activated carbon-molecular sieve obtained by the method has the specific surface area of 600m2More than g, 2.6-5.0 times of that of the active carbon-molecular sieve composite material prepared by directly adopting coal fly ash. The activated carbon-molecular sieve composite material can be used for adsorbing heavy metal ions in wastewater, the adsorption capacity can reach more than 4.5mmol/g, and the adsorption capacity is 2.2-3.2 times that of an activated carbon-molecular sieve prepared before cow dung is added.
Detailed Description
Comparative example 1
The formula is as follows: (weight)
100% of coal fly ash;
the coal fly ash is produced by selecting Texaco gasification fly ash, and comprises the following components:
5.3 percent of other impurities; s, O13.0.0% in the residual carbon, which refers to the incomplete coal powder carried in the coal fly ash;
the preparation method comprises the following steps:
(1) mixing coal fly ash and NaOH according to a weight ratio of 1:1, and then activating for 2 hours at 750 ℃ under nitrogen;
(2) mixing the product obtained in the step (1) with water, wherein the mass ratio of the product obtained in the step (1) to the water is as follows:
performing hydrothermal treatment on the product obtained in the step (1) and water at the temperature of 100 ℃ for 16 hours, and then performing washing, suction filtration, drying, crushing and screening to obtain the activated carbon-molecular sieve which is prepared by taking coal fly ash as a raw material, wherein the activated carbon-molecular sieve is microporous powder and has the particle size of 100-180 mu m;
the XRF method is adopted for analysis and detection, and the percentage of each component in the product is as follows:
the detection was carried out by a method reported in the literature (International Journal of Hydrogen Energy 41(2016)10661-10669), and the specific surface area was 120m2/g;
The following method was used for evaluation;
0.5g of the activated carbon-molecular sieve was put into 1L of Ni with a concentration of 400ppm2+Standing in water solution at 25 deg.C for 24 hr, taking out activated carbon-molecular sieve, and measuring Ni in the solution before and after adsorption by atomic absorption spectrophotometer2+The concentration can be as follows:
Ni2+the adsorption amount was 1.4 mmol/g.
Example 1
The formula is as follows: (weight)
80% of coal fly ash and 20% of dry-base cow dung, wherein the coal fly ash is Texaco gasification fly ash. The coal fly ash composition was the same as comparative example 1;
the preparation method comprises the following steps:
(1) mixing coal fly ash, cow dung and NaOH, and then activating for 2 hours at 750 ℃ under nitrogen;
the mass ratio of the total mass of the coal fly ash and the cow dung to the NaOH is as follows:
coal fly ash, dry cow dung and NaOH are 1: 1;
(2) mixing the product of the step (1) with water, carrying out hydrothermal treatment at 100 ℃ for 16 hours, and then collecting the activated carbon-molecular sieve prepared from the cow dung and the coal fly ash from the system.
Then washing, filtering, drying, crushing and screening to obtain an activated carbon-molecular sieve which takes coal fly ash as a raw material and is microporous powder with the particle size of 100-180 mu m;
the XRF method is adopted for analysis and detection, and the percentage of each component in the product is as follows:
the detection was carried out by a method reported in the literature (International Journal of Hydrogen Energy 41(2016)10661-10669), and the specific surface area was 310m2/g;
The following method was used for evaluation;
0.5g of the activated carbon-molecular sieve was put into 1L of Ni with a concentration of 400ppm2+Standing in water solution at 25 deg.C for 24 hr, taking out activated carbon-molecular sieve, and measuring Ni in the solution before and after adsorption by atomic absorption spectrophotometer2+The concentration can be as follows:
Ni2+the adsorption amount was 3.1 mmol/g.
Example 2
60% of coal fly ash and 40% of dry-base cow dung, wherein the coal fly ash is GSP gasification fly ash and comprises the following components: (weight)
4.3 of other impurities; and S, O2.7.7% in carbon residue;
the preparation method comprises the following steps:
(1) mixing coal fly ash, cow dung and NaOH, and then activating for 2 hours at 800 ℃ under nitrogen;
the mass ratio of the total mass of the coal fly ash and the cow dung to the NaOH is as follows:
coal fly ash, dry cow dung and NaOH are 1: 1;
(2) mixing the product obtained in the step (1) with water, carrying out hydrothermal treatment at 80 ℃ for 8 hours, and collecting the activated carbon-molecular sieve prepared from the cow dung and the coal fly ash from the system.
Then washing, filtering, drying, crushing and screening to obtain an activated carbon-molecular sieve which takes coal fly ash as a raw material and is microporous powder with the particle size of 100-180 mu m;
the XRF method is adopted for analysis and detection, and the percentage of each component in the product is as follows:
the detection was carried out by a method reported in the literature (International Journal of Hydrogen Energy 41(2016)10661-10669), and the specific surface area was 410m2/g;
The following method was used for evaluation;
0.5g of the composite was placed in 1L of Ni with a concentration of 400ppm2+Standing in water solution at 25 deg.C for 24 hr, taking out activated carbon-molecular sieve, and measuring Ni in the solution before and after adsorption by atomic absorption spectrophotometer2+The concentration can be as follows:
Ni2+the adsorption amount was 3.5 mmol/g.
Example 3
40% of coal fly ash and 60% of dry-based cow dung, wherein the coal fly ash is Texaco gasification fly ash and has the same components as in example 1.
The preparation method is the same as that of the example 2:
the XRF method is adopted for analysis and detection, and the percentage of each component in the product is as follows:
specific surface area of 600m2/g;Ni2+The adsorption amount was 4.5 mmol/g.
Example 4
The formula is as follows: (weight)
40% of coal fly ash, 60% of dry cow dung and the same coal fly ash as in example 1;
the preparation method comprises the following steps:
(1) mixing coal fly ash, cow dung and NaOH, and then activating for 4 hours at 850 ℃ under nitrogen;
the mass ratio of the total mass of the coal fly ash and the cow dung to the NaOH is as follows:
coal fly ash and dry cow dung are mixed with NaOH in the ratio of 1 to 2;
(2) mixing the product of the step (1) with water, carrying out hydrothermal treatment at 120 ℃ for 24 hours, and then collecting the activated carbon-molecular sieve prepared from the cow dung and the coal fly ash from the system.
Then, washing, filtering, drying, crushing and screening to obtain activated carbon-molecular sieve which is microporous powder with the particle size of 100-180 mu m by taking coal fly ash as a raw material;
the XRF method is adopted for analysis and detection, and the percentage of each component in the product is as follows:
the specific surface area is 525m2/g,Cu2+The adsorption capacity was 4.1 mmol/g.
Example 5
The formula is as follows: (weight)
20% of coal fly ash and 80% of dry-base cow dung;
the other example is the same as example 4, and the powder is a microporous powder with the particle size of 100-180 μm;
the XRF method is adopted for analysis and detection, and the percentage of each component in the product is as follows:
specific surface area of 505m2/g,Ni2+The adsorption capacity can reach 3.7 mmol/g.
As can be seen from comparative example 1 and examples 1 to 5, the silica-alumina ratio, the structure, the specific surface area and the absorption of the prepared activated carbon-molecular sieve can be regulated and controlled by regulating the mixing ratio of the cow dung and the coal fly ashAnd (4) attaching capacity. Specific surface area and Ni adsorption of activated carbon-molecular sieve prepared by taking cow dung and coal fly ash as raw materials2+The capability is obviously increased and is 2.6-5.0 times and 2.2-3.2 times of that of the activated carbon-molecular sieve prepared by independently using the coal fly ash.
Claims (3)
1. The activated carbon-molecular sieve prepared from cow dung and coal fly ash is characterized by comprising two components of activated carbon and molecular sieve, wherein the two components are microporous powder, the particle size is 100-180 mu m, and the specific surface area is 400-600 m2/g;
The coal fly ash is gasification fly ash, and comprises the following components in percentage by mass:
SiO229 to 50 percent of the total weight of the composition,
Al2O311 to 25% by weight of a binder,
Na20.5 to 5% of O,
Fe2O35 to 11 percent of the total weight of the composition,
CaO is 4-10%,
1 to 6% of MgO,
c is 8 to 22 percent,
4-7% of other impurities;
the preparation method comprises the following steps:
(1) mixing coal fly ash, cow dung and NaOH, and activating in inert atmosphere;
(2) mixing the product obtained in the step (1) with water for hydrothermal treatment, and then collecting the activated carbon-molecular sieve prepared from the cow dung and the coal fly ash from a system;
in the step (1), activating for 1-4 hours at 700-900 ℃ in an inert atmosphere;
the mass ratio of the total mass of the coal fly ash and the dry-based cow dung to the NaOH is as follows: 1: 1-1: 3;
in the step (2), the product obtained in the step (1) is mixed with water, and hydrothermal treatment is carried out for 8-24 hours at 80-120 ℃.
2. The use of the activated carbon-molecular sieve prepared from cow dung and coal fly ash according to claim 1, which is used for adsorbing heavy metal ions in wastewater.
3. Use according to claim 2, wherein the heavy metal ions comprise Ni2+、Cu2+、Pb2+Or Cd2 +。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910949659.4A CN110562975B (en) | 2019-10-08 | 2019-10-08 | Activated carbon-molecular sieve prepared from cow dung and coal fly ash, preparation method and application thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910949659.4A CN110562975B (en) | 2019-10-08 | 2019-10-08 | Activated carbon-molecular sieve prepared from cow dung and coal fly ash, preparation method and application thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
CN110562975A CN110562975A (en) | 2019-12-13 |
CN110562975B true CN110562975B (en) | 2022-04-05 |
Family
ID=68784015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910949659.4A Active CN110562975B (en) | 2019-10-08 | 2019-10-08 | Activated carbon-molecular sieve prepared from cow dung and coal fly ash, preparation method and application thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110562975B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111054212A (en) * | 2020-03-18 | 2020-04-24 | 山东中航天业科技有限公司 | Heat-storage molecular sieve-regulated catalytic reduction denitration device |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005060212A (en) * | 2003-08-19 | 2005-03-10 | Katsuhiro Ito | Method and apparatus for manufacturing synthetic zeolite using sodium hydroxide and fly ash |
JP2010208872A (en) * | 2009-03-06 | 2010-09-24 | Yokohama National Univ | Porous aluminosilicate-carbon composite material and production method of the same |
CN102009986A (en) * | 2010-09-29 | 2011-04-13 | 中国科学院广州能源研究所 | Method for co-production of zeolite molecular sieves, high-grade activated carbon and industrial alkali metal salt from wastes in biomass power plants |
CN202785667U (en) * | 2012-08-29 | 2013-03-13 | 山西潞安矿业(集团)有限责任公司 | Energy-saving device for preparing activated carbon/zeolite-type composite material |
CN104028219A (en) * | 2014-06-16 | 2014-09-10 | 上海大学 | Method for preparing activated carbon-4A type molecular sieve composite material by utilizing coal gangue |
CN105921110A (en) * | 2016-06-02 | 2016-09-07 | 环境保护部华南环境科学研究所 | Preparation method and application of cow dung biological carbon |
-
2019
- 2019-10-08 CN CN201910949659.4A patent/CN110562975B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005060212A (en) * | 2003-08-19 | 2005-03-10 | Katsuhiro Ito | Method and apparatus for manufacturing synthetic zeolite using sodium hydroxide and fly ash |
JP2010208872A (en) * | 2009-03-06 | 2010-09-24 | Yokohama National Univ | Porous aluminosilicate-carbon composite material and production method of the same |
CN102009986A (en) * | 2010-09-29 | 2011-04-13 | 中国科学院广州能源研究所 | Method for co-production of zeolite molecular sieves, high-grade activated carbon and industrial alkali metal salt from wastes in biomass power plants |
CN202785667U (en) * | 2012-08-29 | 2013-03-13 | 山西潞安矿业(集团)有限责任公司 | Energy-saving device for preparing activated carbon/zeolite-type composite material |
CN104028219A (en) * | 2014-06-16 | 2014-09-10 | 上海大学 | Method for preparing activated carbon-4A type molecular sieve composite material by utilizing coal gangue |
CN105921110A (en) * | 2016-06-02 | 2016-09-07 | 环境保护部华南环境科学研究所 | Preparation method and application of cow dung biological carbon |
Non-Patent Citations (2)
Title |
---|
"Surface properties of activated carbon prepared from wastes";Demiral, H et al.;《SURFACE AND INTERFACE ANALYSIS》;20080123;第40卷(第3-4期);第612页活性炭制备部分,第613页表1 * |
"Zeolite-carbon composites prepared from industrial wastes: (I) Effects of processing parameters";Gao, NF et al.;《MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING》;20050531;第399卷(第1-2期);第217试验部分,表1,第219页右栏倒数第2段,第221页左栏第33-35行 * |
Also Published As
Publication number | Publication date |
---|---|
CN110562975A (en) | 2019-12-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Visa | Tailoring fly ash activated with bentonite as adsorbent for complex wastewater treatment | |
El-Moselhy et al. | Adsorption of Cu (II) and Cd (II) from aqueous solution by using rice husk adsorbent | |
CN104492372B (en) | A kind of preparation method and applications for adsorbing heavy metal in waste water material | |
CN104069814A (en) | Method for preparing modified wood chip hydrothermal charcoal by adopting KOH | |
Andreão et al. | Beneficiation of sugarcane bagasse ash: Pozzolanic activity and leaching behavior | |
WO2024083260A1 (en) | Preparation method for and use of magnetic straw biochar material based on red mud enhancement | |
Ma et al. | Enhanced adsorption of cadmium from aqueous solution by amino modification biochar and its adsorption mechanism insight | |
CN109928591A (en) | Sludge solidifying agent and method for sludge treatment based on changing rejected material to useful resource | |
CN112156750B (en) | Preparation method of fly ash carrier heavy metal adsorbent for pulverized coal and product thereof | |
CN110562975B (en) | Activated carbon-molecular sieve prepared from cow dung and coal fly ash, preparation method and application thereof | |
CN103623775A (en) | Nanometer ZnO/mesoporous carbon composite structure and preparation method thereof | |
DE212012000046U1 (en) | Bone charcoal and filter for cleaning gases or liquids | |
He et al. | Geopolymerization of red mud and rice husk ash and potentials of the resulting geopolymeric products for civil infrastructure applications | |
CN113663644A (en) | Ball-milling modified composite biochar and preparation method and application thereof | |
CN112875718A (en) | Method for preparing molecular sieve with high silica-alumina ratio based on biomass ash activated fly ash | |
CN101988155A (en) | Composite additive for purifying and removing cobalt in zinc hydrometallurgy | |
Ismail et al. | Adsorption kinetics of cadmium ions onto powdered corn cobs | |
CN110975811A (en) | Method for preparing adsorbent by using high-alumina fly ash and application | |
Minz et al. | Jackfruit peel derived ZnCl2-impregnated activated carbon: Optimization, characterization, and application in dye removal | |
Murugan et al. | Characterization, morphology and stability assessment of low-cost industrial by-product as an adsorbent for the removal of methylene blue from aqueous solution | |
CN103990436B (en) | Tourmaline/scion grafting modification sulfur-bearing redox graphene composite adsorbing material and preparation method thereof | |
Kanchi et al. | Development of green energy waste activated carbon for removal of trivalent chromium: equilibrium and kinetic modeling | |
CN110342605A (en) | It is a kind of for adsorbing the sludge-based activated carbon composite material and preparation method of heavy metal in flying ash leachate | |
CN106118803B (en) | House refuse low temperature pyrogenation stove Nei bioxin inhibitor and preparation method and application | |
CN113184921B (en) | LDH-based composite material based on nickel-containing sludge and preparation method thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |