CN102500329A - Preparation method of composite chitosan modified fly ash adsorbent - Google Patents
Preparation method of composite chitosan modified fly ash adsorbent Download PDFInfo
- Publication number
- CN102500329A CN102500329A CN2011103040986A CN201110304098A CN102500329A CN 102500329 A CN102500329 A CN 102500329A CN 2011103040986 A CN2011103040986 A CN 2011103040986A CN 201110304098 A CN201110304098 A CN 201110304098A CN 102500329 A CN102500329 A CN 102500329A
- Authority
- CN
- China
- Prior art keywords
- fly ash
- shitosan
- chitosan
- slaking
- modified fly
- 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.)
- Pending
Links
Landscapes
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to a preparation method of a composite chitosan modified fly ash adsorbent, comprising the following steps: (1) mixing uniformly sieved fly ash and saturated Ca(OH)2 solution according to the proportion of 0.5g/mL, and curing for 1h to obtain modified fly ash for later use; (2) adding the modified fly ash and composite into 1.2% chitosan-acetic acid solution according to the mass ratio of 1:20-1:25, stirring for 20-30min, curing for 2h, filtrating, drying at the constant temperature of 110 DEG C, sieving by using a sieve of 80 meshes to obtain the composite chitosan modified fly ash adsorbent. The composite chitosan modified fly ash adsorbent is non-toxic, harmless, natural and environmental friendly, can degrade naturally and can not cause secondary pollution. The excellent capacity of adsorbing the dye molecules of the chitosan is exerted, the characteristics of multiple pores and large surface area of the fly ash is fully utilized, the treatment efficiency is improved, the addition amount of the adsorbent is greatly reduced, the later-stage output of the sludge is reduced, the secondary pollution is reduced, and the decolorization rate and the COD removal rate of the dye waste water are greatly improved. The water treatment agent which is easy and convenient to use, economical, environmental friendly, efficient and stable is developed.
Description
Technical field
The invention belongs to the waste water treatment field, related to a kind of waste water from dyestuff adsorbent, the preparation method of the composite modified fly ash absorbent of particularly a kind of shitosan.
Background technology
Waste water from dyestuff has characteristics such as organic pollution content is high, colourity dark, difficult degradation, COD content height, and its dyestuff composition harms self-purification of water, heavy damage water body, soil and ecological environment thereof.Absorption method is that the technology cost is lower, simple to operate and by one of method that extensively adopts.Existing adsorbent dosage is big, and percent of decolourization and COD clearance are on the low side, and later stage mud output is big, and secondary pollution is serious, and it is good to press for the development percent of decolourization, and the COD clearance is high, and is adding less, secondary pollution circlet guarantor type adsorbent.
Summary of the invention
The object of the invention provides a kind of economic environmental protection, stable performance, high adsorption capacity, adding less, dye wastewater treatment using adsorbent that secondary pollution is little, and the preparation method of the composite modified fly ash absorbent of a kind of shitosan is provided especially.
The technical scheme that adopts is:
The preparation method of the composite modified fly ash absorbent of a kind of shitosan comprises following processing step:
1, will sieve flyash and Ca (OH)
2The mixed that saturated solution is pressed 0.5g/mL is even, makes modified coal ash behind the slaking 1h, and is subsequent use;
2, be 1 with modified coal ash and shitosan by mass ratio: 20-1: 25 join in 1.2% the chitosan-acetic acid solution, stir 20min-30min, and slaking 2h crosses 80 mesh sieves behind suction filtration, 110 ℃ of freeze-day with constant temperature, promptly gets.
Be used to handle active dye wastewater, this adsorbent only is the 1/16-1/20 of single fly ash absorbent dosage, and the output that this greatly reduces later stage mud has reduced secondary pollution.
Adsorbent has improved 20-32% and 60-72% to the percent of decolourization and the COD clearance of active dye wastewater respectively than fly ash absorbent.
The composite modified fly ash absorbent of the shitosan that has adsorbed dye molecule is put into the NaOH solution of 0.01mol/L, vibration 20min, desorption efficiency can reach 81.1%.Adsorbent after the desorb is added in the reactive dye solution adsorbs, adsorption rate can reach 80.8%, the visible renewable repeated use of this adsorbent.
The invention has the advantages that:
The present invention develops the novel water treatment agent of a kind of green, environmental protection, is used for dye wastewater treatment using.The preparation raw material is flyash and shitosan, and flyash is the solid waste behind the coal burning, and is cheap, draws materials extensively, utilizes it to make adsorbent, has both reached the purpose of the treatment of wastes with processes of wastes against one another, can reduce the cost of adsorbent again.Shitosan is the natural polymer organic matter, and this compound is nontoxic, harmless, natural environmental-protective, and can natural degradation, does not have secondary pollution.Utilize the composite modified flyash dye wastewater treatment using of shitosan; Both brought into play the shitosan adsorption capacity good, made full use of the characteristic that how empty flyash is, specific surface is big again, improved treatment effeciency dye molecule; The dosage of adsorbent is obviously reduced; Reduced the output of later stage mud, reduced secondary pollution, percent of decolourization and the COD clearance to waste water from dyestuff improves greatly simultaneously.Develop the water treatment agent of easy, the economic environmental protection of preparation, efficient stable.
The specific embodiment
Embodiment 1
The preparation method of the composite modified fly ash absorbent of a kind of shitosan comprises following processing step:
1, will sieve flyash and Ca (OH)
2The mixed that saturated solution is pressed 0.5g/mL is even, makes modified coal ash behind the slaking 1h, and is subsequent use;
2, be to join at 1: 20 in 1.2% the chitosan-acetic acid solution modified coal ash and shitosan by mass ratio, stir 20min, slaking 2h crosses 80 mesh sieves behind suction filtration, 110 ℃ of freeze-day with constant temperature, promptly gets.
Embodiment 2
The preparation method of the composite modified fly ash absorbent of a kind of shitosan comprises following processing step:
1, will sieve flyash and Ca (OH)
2The mixed that saturated solution is pressed 0.5g/mL is even, makes modified coal ash behind the slaking 1h, and is subsequent use;
2, be to join at 1: 22 in 1.2% the chitosan-acetic acid solution modified coal ash and shitosan by mass ratio, stir 25min, slaking 2h crosses 80 mesh sieves behind suction filtration, 110 ℃ of freeze-day with constant temperature, promptly gets.
Embodiment 3
The preparation method of the composite modified fly ash absorbent of a kind of shitosan comprises following processing step:
1, will sieve flyash and Ca (OH)
2The mixed that saturated solution is pressed 0.5g/mL is even, makes modified coal ash behind the slaking 1h, and is subsequent use;
2, be to join at 1: 25 in 1.2% the chitosan-acetic acid solution modified coal ash and shitosan by mass ratio, stir 30min, slaking 2h crosses 80 mesh sieves behind suction filtration, 110 ℃ of freeze-day with constant temperature, promptly gets.
Claims (4)
1. the preparation method of the composite modified fly ash absorbent of shitosan is characterized in that: comprise following processing step:
1), will sieve flyash and Ca (OH)
2The mixed that saturated solution is pressed 0.5g/mL is even, makes modified coal ash behind the slaking 1h, and is subsequent use;
2) be 1 with modified coal ash and shitosan by mass ratio: 20-1: 25 join in 1.2% the chitosan-acetic acid solution, stir 20min-30min, and slaking 2h crosses 80 mesh sieves behind suction filtration, 110 ℃ of freeze-day with constant temperature, promptly gets.
2. the preparation method of the composite modified fly ash absorbent of a kind of shitosan according to claim 1 is characterized in that: comprise following processing step:
1), will sieve flyash and Ca (OH)
2The mixed that saturated solution is pressed 0.5g/mL is even, makes modified coal ash behind the slaking 1h, and is subsequent use;
2), be to join at 1: 20 in 1.2% the chitosan-acetic acid solution modified coal ash and shitosan by mass ratio, stir 20min, slaking 2h crosses 80 mesh sieves behind suction filtration, 110 ℃ of freeze-day with constant temperature, promptly gets.
3. the preparation method of the composite modified fly ash absorbent of a kind of shitosan according to claim 1 is characterized in that: comprise following processing step:
1), will sieve flyash and Ca (OH)
2The mixed that saturated solution is pressed 0.5g/mL is even, makes modified coal ash behind the slaking 1h, and is subsequent use;
2), be to join at 1: 22 in 1.2% the chitosan-acetic acid solution modified coal ash and shitosan by mass ratio, stir 25min, slaking 2h crosses 80 mesh sieves behind suction filtration, 110 ℃ of freeze-day with constant temperature, promptly gets.
4. the preparation method of the composite modified fly ash absorbent of a kind of shitosan according to claim 1 is characterized in that: comprise following processing step:
1), will sieve flyash and Ca (OH)
2The mixed that saturated solution is pressed 0.5g/mL is even, makes modified coal ash behind the slaking 1h, and is subsequent use;
2), be to join at 1: 25 in 1.2% the chitosan-acetic acid solution modified coal ash and shitosan by mass ratio, stir 30min, slaking 2h crosses 80 mesh sieves behind suction filtration, 110 ℃ of freeze-day with constant temperature, promptly gets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103040986A CN102500329A (en) | 2011-10-10 | 2011-10-10 | Preparation method of composite chitosan modified fly ash adsorbent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103040986A CN102500329A (en) | 2011-10-10 | 2011-10-10 | Preparation method of composite chitosan modified fly ash adsorbent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102500329A true CN102500329A (en) | 2012-06-20 |
Family
ID=46212496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103040986A Pending CN102500329A (en) | 2011-10-10 | 2011-10-10 | Preparation method of composite chitosan modified fly ash adsorbent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102500329A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104310597A (en) * | 2014-09-28 | 2015-01-28 | 青岛文创科技有限公司 | Preparation method of dyeing wastewater treating agent |
| CN104591360A (en) * | 2015-01-20 | 2015-05-06 | 河南城建学院 | Algicide and algae removing method capable of flocculating and quickly settling algae |
| CN104973667A (en) * | 2014-04-10 | 2015-10-14 | 中国科学院生态环境研究中心 | Method of preparing Al<3+>-chitosan-fly ash ternary composite flocculant by one step for alga and turbidity removal of eutrophic water body |
| CN105036237A (en) * | 2015-07-31 | 2015-11-11 | 安徽理工大学 | Technological method for treatment of waste water containing heavy metal ions through chitosan modified fly ash |
| CN105251462A (en) * | 2015-11-11 | 2016-01-20 | 姜捷 | Garbage penetrating fluid efficient wastewater treating agent based on modified fly ash and preparation method |
| CN106582566A (en) * | 2016-11-30 | 2017-04-26 | 无锡龙盈环保科技有限公司 | Chitosan compound modified adsorbent and preparation method thereof |
| CN108275745A (en) * | 2017-12-28 | 2018-07-13 | 主义 | A kind of montmorillonite/flyash/chitosan compound sewage inorganic agent and preparation and application |
| CN109133309A (en) * | 2018-10-10 | 2019-01-04 | 江苏京牧生物技术有限公司 | A kind of preparation method of compound sewage-treating agent |
| CN110052249A (en) * | 2019-05-23 | 2019-07-26 | 安徽大学 | A kind of process using Chitosan-coated Chromium-containing Wastewater Treatment by Flyash |
| CN114307982A (en) * | 2022-01-14 | 2022-04-12 | 山东高速环保科技有限公司 | Preparation method of composite-based modified fly ash particles for static water body restoration |
| CN114425303A (en) * | 2022-03-01 | 2022-05-03 | 广东石油化工学院 | Preparation method and application of alkali-soluble fly ash modified straw stalk biochar |
| CN115041140A (en) * | 2022-06-07 | 2022-09-13 | 哈尔滨工业大学 | Preparation method of magnetic adsorbent for treating complex trivalent chromium in water |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101537341A (en) * | 2009-03-18 | 2009-09-23 | 济南大学 | Modified fly ash loading chitosan compounding sorption agent and preparation method thereof |
-
2011
- 2011-10-10 CN CN2011103040986A patent/CN102500329A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101537341A (en) * | 2009-03-18 | 2009-09-23 | 济南大学 | Modified fly ash loading chitosan compounding sorption agent and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘旭东，等: "改性粉煤灰处理印染废水的试验研究", 《工业安全与环保》 * |
| 毕绍丹，等: "壳聚糖复合粉煤灰处理活性染料废水的研究", 《沈阳理工大学学报》 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104973667A (en) * | 2014-04-10 | 2015-10-14 | 中国科学院生态环境研究中心 | Method of preparing Al<3+>-chitosan-fly ash ternary composite flocculant by one step for alga and turbidity removal of eutrophic water body |
| CN104310597A (en) * | 2014-09-28 | 2015-01-28 | 青岛文创科技有限公司 | Preparation method of dyeing wastewater treating agent |
| CN104591360A (en) * | 2015-01-20 | 2015-05-06 | 河南城建学院 | Algicide and algae removing method capable of flocculating and quickly settling algae |
| CN104591360B (en) * | 2015-01-20 | 2016-08-24 | 河南城建学院 | A kind of algicide making frond flocculation also rapid subsidence and algae-removing method thereof |
| CN105036237A (en) * | 2015-07-31 | 2015-11-11 | 安徽理工大学 | Technological method for treatment of waste water containing heavy metal ions through chitosan modified fly ash |
| CN105251462B (en) * | 2015-11-11 | 2018-02-06 | 姜捷 | A kind of efficient waste water treating agent of refuse leachate based on modified coal ash and preparation method |
| CN105251462A (en) * | 2015-11-11 | 2016-01-20 | 姜捷 | Garbage penetrating fluid efficient wastewater treating agent based on modified fly ash and preparation method |
| CN106582566A (en) * | 2016-11-30 | 2017-04-26 | 无锡龙盈环保科技有限公司 | Chitosan compound modified adsorbent and preparation method thereof |
| CN108275745A (en) * | 2017-12-28 | 2018-07-13 | 主义 | A kind of montmorillonite/flyash/chitosan compound sewage inorganic agent and preparation and application |
| CN109133309A (en) * | 2018-10-10 | 2019-01-04 | 江苏京牧生物技术有限公司 | A kind of preparation method of compound sewage-treating agent |
| CN110052249A (en) * | 2019-05-23 | 2019-07-26 | 安徽大学 | A kind of process using Chitosan-coated Chromium-containing Wastewater Treatment by Flyash |
| CN114307982A (en) * | 2022-01-14 | 2022-04-12 | 山东高速环保科技有限公司 | Preparation method of composite-based modified fly ash particles for static water body restoration |
| CN114425303A (en) * | 2022-03-01 | 2022-05-03 | 广东石油化工学院 | Preparation method and application of alkali-soluble fly ash modified straw stalk biochar |
| CN115041140A (en) * | 2022-06-07 | 2022-09-13 | 哈尔滨工业大学 | Preparation method of magnetic adsorbent for treating complex trivalent chromium in water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102500329A (en) | Preparation method of composite chitosan modified fly ash adsorbent | |
| CN104888704B (en) | The preparation method of mulberry bar activated carbon/iron and manganese oxides compound adsorbent | |
| CN103301807B (en) | Preparation method of high-efficiency composite attapulgite/rice hull activated carbon purified water material | |
| CN102029144A (en) | Adsorbent for adsorbing heavy metal ions and dye in waste water and preparation method thereof | |
| CN105080506A (en) | Preparation method and application of sodium alginate microspheres | |
| CN103041787A (en) | Preparation method of crosslinked chitosan-manganese dioxide composite adsorbing material | |
| CN108585101B (en) | Recovery method of inorganic material hybridized porous biomass microspheres for heavy metal sewage treatment | |
| CN102671646B (en) | Method for preparing adsorbing material for disposing oily sewage | |
| CN102452781A (en) | Carbon-based sludge composite regulating and dehydrating agent based on sludge incineration | |
| CN102989433A (en) | Production method of bamboo powder-amino acid type adsorption material | |
| CN103111266B (en) | Preparation method of granular adsorbent for removing antibiotics in water, prepared adsorbent and application | |
| CN101844071A (en) | Absorption material prepared from paper making mud | |
| CN111018311A (en) | Normal-temperature modified sludge dehydrating agent and preparation method thereof | |
| CN107963628B (en) | Preparation of walnut shell activated carbon and method for adsorbing and recovering eluent in phenanthrene-polluted soil eluent by using walnut shell activated carbon | |
| CN101601991A (en) | Remove biomass adsorbent and preparation, application and the renovation process of lead ion in the waste water | |
| CN103432999A (en) | Preparation method of rice-straw based chromium ion adsorbing material | |
| CN107029674A (en) | A kind of rare earth modified medical stone and peanut shell composite adsorbing material and preparation method thereof | |
| CN105056885A (en) | Active carbon absorbent for removing mercury in flue gas | |
| CN107051194A (en) | A kind of purification particle being filled in filter screen | |
| CN104190377A (en) | Activated carbon for adsorption of automobile exhaust and preparation method of activated carbon | |
| CN113477226A (en) | Method for removing trivalent antimony in aqueous solution by using chitosan modified charcoal | |
| CN113083249A (en) | Preparation and application of regenerated bacterial cellulose composite aerogel adsorption material | |
| CN102580690B (en) | Nano-aperture granular adsorbent and preparation and application thereof | |
| CN107433192A (en) | A kind of composite fibre sorbing material and preparation method thereof | |
| CN103303906B (en) | Pine nut shell prepares the method for high specific surface micro-pore carbon |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120620 |