CN1903424A - Composite adsorbent contg. flyash and its prepn. method - Google Patents
Composite adsorbent contg. flyash and its prepn. method Download PDFInfo
- Publication number
- CN1903424A CN1903424A CN 200510043011 CN200510043011A CN1903424A CN 1903424 A CN1903424 A CN 1903424A CN 200510043011 CN200510043011 CN 200510043011 CN 200510043011 A CN200510043011 A CN 200510043011A CN 1903424 A CN1903424 A CN 1903424A
- Authority
- CN
- China
- Prior art keywords
- flyash
- preparation
- superfined
- compound adsorbent
- solution
- 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.)
- Granted
Links
- 239000003463 adsorbent Substances 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 title claims abstract description 7
- 239000010881 fly ash Substances 0.000 title claims description 62
- 238000000034 method Methods 0.000 title claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 27
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract 3
- 238000002360 preparation method Methods 0.000 claims description 20
- 150000001875 compounds Chemical class 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000000741 silica gel Substances 0.000 claims description 8
- 229910002027 silica gel Inorganic materials 0.000 claims description 8
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 6
- 238000011282 treatment Methods 0.000 claims description 6
- 229910021529 ammonia Inorganic materials 0.000 claims description 5
- 238000000498 ball milling Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 230000005684 electric field Effects 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims 3
- 235000012239 silicon dioxide Nutrition 0.000 claims 2
- 238000010306 acid treatment Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 239000000243 solution Substances 0.000 abstract description 12
- 239000010883 coal ash Substances 0.000 abstract description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 abstract description 2
- 239000007864 aqueous solution Substances 0.000 abstract description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 231100001240 inorganic pollutant Toxicity 0.000 abstract 1
- 238000003760 magnetic stirring Methods 0.000 abstract 1
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 9
- 238000005345 coagulation Methods 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004065 wastewater treatment Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000701 coagulant Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000376 reactant Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 239000007767 bonding agent Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000002079 cooperative effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
A composite adsorbent for adsorbing the organic and inorganic pollutants from aqueous solution is prepared from powdered coal ash through ball grinding, adding NaOH solution, magnetic stirring while reacting, adding H2SO4 solution, reacting while stirring, treating with ammonia water, baking and pulverizing.
Description
Technical field
The invention belongs to wastewater treatment scavenging material field, relate to the preparation method of shaping powder coal ash compound adsorbent.
Background technology
Flyash is the discarded object that electric field is discharged, and its main component is SiO
2, Al
2O
3, CaO, Fe
2O
3Deng, also contain a spot of other materials simultaneously.Flyash is made up of the particulate that much has different structure and form, about 25～300 μ m of the particle diameter of single fly ash grain, average geometric particle diameter 40 μ m.Porosity is generally 60%～75%.Flyash has loose structure, and porosity is generally 60%～75%, and specific area is generally at 2500～5000m
2/ g has stronger adsorption capacity.Heavy metal ion in the waste water, pharmacy waste water, colorful wastewater, sanitary sewage etc. there is certain absorption removal effect.But owing to flyash this as reasons such as fine particle and absorption property are undesirable, make it to adorn post operation and separation difficulty, thereby be difficult at industrialized utilization.Flyash is carried out forming processes, and the preparation formed absorbent is a flyash industrialized utilization key.
Summary of the invention
The object of the present invention is to provide a kind of preparation method and technology of use in waste water treatment formed absorbent, it earlier through ultra-fine ball milling, obtains superfined flyash with flyash, adds NaOH solution, makes it to generate sodium metasilicate with the flyash reaction, and the back adds H
2SO
4Solution, reactive polymeric generate poly-silicic acid, the further aging silica gel that becomes.The silica gel that generates bonds together moulding with fly ash grain and obtains the fly ash base compound adsorbent.In order to increase the porosity of adsorbent, in polymerization process, add the low concentration ammonia aqueous solution.Flyash with acid, also can generate polyaluminium sulfate, bodied ferric sulfate and remaining water treatments such as poly-silicic acid coagulant in the alkali reaction process, compound coagulant can the good coagulation effect of generation in the process of wastewater treatment.Absorption and coagulation synergy will improve the water treatment effect greatly.The silica gel that reaction is generated is porous mass, can provide passage for flyash absorption, and silica gel also has absorption property preferably to the pollutant in the water and air, also can produce collaborative suction-operated.
Preparation method of the present invention is different from the charing and the activating process of traditional adsorbent preparation, according to the tightly packed a large amount of holes that help adsorbing that produce in the high surface of the composition of flyash and physicochemical properties, superfine powder and the composite molding process thereof, flyash and chemical reagent reaction original position are generated the bonding agent composite molding, the ultra-fine compound adsorbent of preparation fly ash base.What this method also was different from common employing adds the bonding agent composite molding technique, and the composition and property that makes full use of flyash generates bonding agent silica gel, has both simplified technology and also can obtain abundanter hole, reduces cost, improves absorption property.With acid, can generate water treatment coagulant such as polyaluminium sulfate, bodied ferric sulfate and poly-silicic acid in the alkali reaction process, compound coagulant can the good coagulation effect of generation in the process of wastewater treatment at flyash.Absorption and coagulation synergy will improve the water treatment effect greatly.
The preparation method of flyash compound adsorbent of the present invention is as follows:
Get the 20g superfined flyash, add the NaOH solution of 80ml concentration 15%, place to be stirred to reactant on 80 ℃ of constant temperature blender with magnetic force and to be the pitch shape.The H that adds 10ml concentration 10%
2SO
4Solution stirs, reaction 2h.The ammoniacal liquor that adds 15ml 0.15%～0.18% is placed more than the 6h, puts into drying in oven then.Block mixture of fly ash is taken out, be broken into the particle that granularity is 1～3mm, obtain the fly ash base compound adsorbent.
The present invention has the following advantages compared with the prior art:
1. the present invention is a shaping powder coal ash compound adsorbent, mechanical strength is preferably arranged, thereby has overcome flyash and be difficult to adorn the difficult problem of separating between post operation and flyash and the processing moisture, and helps industrial utilization.
2. the present invention is according to the composition and property of flyash, carries out chemical reaction and generates silica gel as the moulding binding agent, and silica gel itself has abundant hole and absorption property preferably.Be easy to control binder amount and degree of scatter and produce cooperative effect.
3. the flyash compound adsorbent of the present invention's preparation integrates absorption, coagulation, is a kind of brand-new wastewater treatment material.
The specific embodiment
Below by embodiment the preparation of flyash compound adsorbent among the present invention is further described.
Embodiment 1
Get 160g flyash, ball milling 5h gets superfined flyash on planetary ball mill.Flyash is 1: 4, rotating speed 300r/min with the steel ball quality ratio.Get the 20g superfined flyash, add 15% NaOH solution 80ml, place on the constant temperature blender with magnetic force 100 ℃ to be stirred to reactant and to be the pitch shape.The H of adding 10%
2SO
4Solution 5ml reacts 2h, the broken product that gets in oven dry back.
Embodiment 2
Get 160g flyash, ball milling 5h gets superfined flyash on planetary ball mill.Flyash is 1: 4, rotating speed 300r/min with the steel ball quality ratio.Get the 20g superfined flyash, add 15% NaOH solution 80ml, place on the constant temperature blender with magnetic force 100 ℃ to be stirred to reactant and to be the pitch shape.The H of adding 10%
2SO
4Solution 5ml reacts 2h.Handle more than the 6h with the ammonia spirit of 15ml 0.15% back, the oven dry back broken product.
Embodiment 3
Get 160g flyash, ball milling 5h gets superfined flyash on planetary ball mill.Flyash is 1: 4, rotating speed 300r/min with the steel ball quality ratio.Take by weighing the 20g superfined flyash, add 15% NaOH solution 80ml, place on the constant temperature blender with magnetic force 100 ℃ to be stirred to reactant and to be the pitch shape.The H of adding 10%
2SO
4Solution 10ml reacts, and stirs, and handles more than the 6h the broken product that gets in oven dry back with 15ml concentration 0.15% ammonia spirit.
Claims (6)
1. the preparation method of a flyash compound adsorbent comprises the preparation of raw material and the composite molding of adsorbent.Its feature and preparation process are as follows: the processing of (1) raw material: raw materials used ultra-fine grinding obtains superfined flyash through ball mill for electric field flyash; (2) composite molding of adsorbent: get superfined flyash, add NaOH solution, stirring reaction adds H then to the pitch shape under 80-100 ℃ of constant temperature
2SO
4Solution, the afterreaction 2h that stirs adds ammonia spirit again and handles more than the 6h, the broken product that gets in oven dry back.
2. the preparation method of flyash compound adsorbent according to claim 1 is characterized in that its preparation technology: superfined flyash preparation (1) → alkali treatment (2) → acid treatment (3) → ammonia treatment (4) → moulding (5) → finished product (6).
3. the preparation method of flyash compound adsorbent according to claim 1 is characterized in that in turn including the following steps:
A, flyash is obtained superfined flyash at the ball mill ball milling;
B, in superfined flyash, add NaOH solution stirring reaction under 80-100 ℃ of constant temperature;
C, adding H
2SO
4Solution, afterreaction 2h stirs;
D, adding ammonia spirit are handled more than the 6h;
E, drying, the broken product that gets.
4. the preparation method of flyash compound adsorbent according to claim 1, the forming method that it is characterized in that superfined flyash adopt flyash and NaOH solution reaction generation sodium metasilicate, sodium metasilicate again with H
2SO
4Solution reaction generation silicic acid, silicic acid polymerization become poly-silicic acid, wearing out becomes silica gel, with the flyash molding bonded.
5. the preparation method of flyash compound adsorbent according to claim 1 is characterized in that, the flyash that adopts is the superfined flyash that fly ash in electric power plant obtains through ultra-fine grinding.
6. the preparation method of flyash compound adsorbent according to claim 1 is characterized in that, prepared flyash compound adsorbent can be made into the solid particle of different shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100430119A CN100381201C (en) | 2005-07-28 | 2005-07-28 | Composite adsorbent contg. flyash and its prepn. method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100430119A CN100381201C (en) | 2005-07-28 | 2005-07-28 | Composite adsorbent contg. flyash and its prepn. method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1903424A true CN1903424A (en) | 2007-01-31 |
| CN100381201C CN100381201C (en) | 2008-04-16 |
Family
ID=37672877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100430119A Expired - Fee Related CN100381201C (en) | 2005-07-28 | 2005-07-28 | Composite adsorbent contg. flyash and its prepn. method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100381201C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102008936A (en) * | 2010-12-25 | 2011-04-13 | 河南科技大学 | Method for preparing phosphorus adsorbing material from fly ash |
| CN102179232A (en) * | 2011-02-17 | 2011-09-14 | 杭州电子科技大学 | Method for preparing flying ash/activated carbon compound adsorbent used for demercuration |
| CN101733111B (en) * | 2008-11-10 | 2012-02-29 | 中国石油大学(北京) | Perovskite/cerium dioxide composite catalyst and preparation method thereof and catalytic combustion on soot |
| CN103028379A (en) * | 2012-12-31 | 2013-04-10 | 西安科技大学 | Preparation method of coal-based chelate sorbent |
| CN106237976A (en) * | 2016-08-09 | 2016-12-21 | 神华集团有限责任公司 | A kind of adsorbent and its preparation method and application |
| CN106824053A (en) * | 2017-04-06 | 2017-06-13 | 东北大学 | A kind of preparation method of the fly ash-based adsorbent of efficient absorption dyestuff |
| CN107158942A (en) * | 2017-06-30 | 2017-09-15 | 合肥天翔环境工程有限公司 | A kind of sintering furnace flue-gas dust-removing and desulfurization system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD156254A1 (en) * | 1981-02-12 | 1982-08-11 | Bergk Karl Heinz | PROCESS FOR PREPARING AN ALUMOSILIC ADSORB |
| JP3957899B2 (en) * | 1998-11-12 | 2007-08-15 | 株式会社日本海水 | Regeneration method of arsenic adsorbent |
| CN1175927C (en) * | 2003-01-17 | 2004-11-17 | 中唯炼焦技术国家工程研究中心有限责任公司 | Modified adsorbent of fly ash and method for treating waste water by using absorbent |
| KR20030061720A (en) * | 2003-05-29 | 2003-07-22 | 주식회사 대진환경산업 | Manufacturing of Pore type Zeolite Media using Coal Fly Ash and it's application for removing ammonia and heavy metals and media in growing Microorganism. |
-
2005
- 2005-07-28 CN CNB2005100430119A patent/CN100381201C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733111B (en) * | 2008-11-10 | 2012-02-29 | 中国石油大学(北京) | Perovskite/cerium dioxide composite catalyst and preparation method thereof and catalytic combustion on soot |
| CN102008936A (en) * | 2010-12-25 | 2011-04-13 | 河南科技大学 | Method for preparing phosphorus adsorbing material from fly ash |
| CN102008936B (en) * | 2010-12-25 | 2013-01-09 | 河南科技大学 | Method for preparing phosphorus adsorbing material from fly ash |
| CN102179232A (en) * | 2011-02-17 | 2011-09-14 | 杭州电子科技大学 | Method for preparing flying ash/activated carbon compound adsorbent used for demercuration |
| CN102179232B (en) * | 2011-02-17 | 2012-06-27 | 杭州电子科技大学 | Method for preparing flying ash/activated carbon compound adsorbent used for demercuration |
| CN103028379A (en) * | 2012-12-31 | 2013-04-10 | 西安科技大学 | Preparation method of coal-based chelate sorbent |
| CN106237976A (en) * | 2016-08-09 | 2016-12-21 | 神华集团有限责任公司 | A kind of adsorbent and its preparation method and application |
| CN106237976B (en) * | 2016-08-09 | 2019-02-15 | 神华集团有限责任公司 | A kind of adsorbent and its preparation method and application |
| CN106824053A (en) * | 2017-04-06 | 2017-06-13 | 东北大学 | A kind of preparation method of the fly ash-based adsorbent of efficient absorption dyestuff |
| CN107158942A (en) * | 2017-06-30 | 2017-09-15 | 合肥天翔环境工程有限公司 | A kind of sintering furnace flue-gas dust-removing and desulfurization system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100381201C (en) | 2008-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100381201C (en) | Composite adsorbent contg. flyash and its prepn. method | |
| CN101143312A (en) | Method for manufacturing and regenerating granular red mud absorber used for water process | |
| CN103406094A (en) | Method for manufacturing magnetic sludge-based active carbon | |
| CN108706745A (en) | A kind of processing method of high ferrimanganic ammonia nitrogen combined pollution low temperature underground water | |
| CN1319640C (en) | Method for preparing active fly ash phosphorus adsorbent | |
| CN104941584B (en) | Heavy metal ion SiO in a kind of adsorbed water body2/ C composite and its application | |
| Pan et al. | Simultaneous adsorption removal of organic and inorganic phosphorus from discharged circulating cooling water on biochar derived from agricultural waste | |
| CN109126748B (en) | Composite material PEI-CS-KIT-6 based on inorganic silicon source, preparation method thereof and application thereof in lead removal | |
| CN101591032B (en) | Method for preparing modified polyaluminium chloride flocculating agent by waste molecular sieve | |
| CN105396553A (en) | Composite adsorption material of heavy metal ions in industrial wastewater | |
| CN109133287A (en) | Handle the precipitating reagent and its configuration method of dyeing and printing sewage | |
| CN106582509A (en) | Heavy metal ion porous adsorbing material and preparation method thereof | |
| CN104001479A (en) | Inorganic mineral water treatment agent and preparation method thereof | |
| CN101306850B (en) | Composite high-efficiency diatomaceous earth purifier and preparation method | |
| CN102350313B (en) | Preparation method and application of copper and ferrous magnetic metal oxide modified fly ash phosphorus adsorbent | |
| CN113289502A (en) | Preparation method of amyloid fiber ferric oxide composite membrane and method for removing phosphate in tail water of municipal sewage treatment plant | |
| CN108588882A (en) | A kind of industrial residue based composite fibre and preparation method thereof | |
| CN113461026A (en) | Preparation method and application of zeolite type phosphorus removal agent for high-salt waste liquid | |
| CN102432153A (en) | Preparation method of magnetic sludge deep dehydration composite modifier | |
| CN110078456B (en) | Gypsum fiberboard with adsorption and photocatalytic performances and preparation method and application thereof | |
| CN112121757A (en) | Preparation method and application of magnesium oxide modified sepiolite adsorbent | |
| CN109133290A (en) | The precipitating reagent and preparation method thereof of efficient process chemical engineering sewage | |
| CN107892361B (en) | Method for deeply purifying heavy metals in water by using titanium phosphate nanoflower coating material | |
| CN113912317B (en) | Cement production method by adding naphthalene sulfonate water reducing agent | |
| CN110575812A (en) | environment-friendly adsorbing material for efficient phosphorus removal of argil/pyrolusite and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Liu Zhuannian Document name: patent for invention |
|
| C56 | Change in the name or address of the patentee |
Owner name: XI AN TECHNOLOGY UNIVERSITY Free format text: FORMER NAME: LIU ZHUANNIAN |
|
| CP03 | Change of name, title or address |
Address after: No. 58, middle of Yanta Road, Shaanxi, Xi'an Province, Xi'an University of Science And Technology Patentee after: Xi'an University of Science and Technology Address before: Shaanxi Province, Xi'an City, Beilin District umbrella Tower Road No. 4 Patentee before: Liu Zhuannian |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080416 Termination date: 20100728 |