CN103521190A - Preparation method for kaolin loaded with chitosan - Google Patents
Preparation method for kaolin loaded with chitosan Download PDFInfo
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- CN103521190A CN103521190A CN201310475329.9A CN201310475329A CN103521190A CN 103521190 A CN103521190 A CN 103521190A CN 201310475329 A CN201310475329 A CN 201310475329A CN 103521190 A CN103521190 A CN 103521190A
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- chitosan
- kaolin
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- shitosan
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- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
A disclosed preparation method for kaolin loaded with chitosan relates to a preparation method for a waste water processing material. The preparation method for the kaolin loaded with chitosan comprises the following steps: adding chitosan into an acetic acid solution with a mass fraction of 5% to prepare a chitosan sol with a mass faction of 2%; slowly adding kaolin into the chitosan sol according to a mass ratio of 0.06, continuously stirring for 1 h; and placing in a 100 DEG C baking oven, heating and drying, grinding finely to obtain the kaolin loaded with chitosan. According to the preparation method, the high-specific-surface-area kaolin is loaded with chitosan, so that the active groups in chitosan molecules are capable of effectively affecting Cr(VI) and thus the composite adsorbent is optimized in structure and improved in adsorptive performance; and the composite adsorbent has the advantages of being environment friendly, simple in operation method, short in affecting time and the like, helps to reduce processing cost, and is applicable to underground water polluted by chromium slags.
Description
Technical field
The present invention relates to a kind of preparation method of wastewater treatment material.
Background technology
According to statistics, domestic annual newly-increased approximately 600,000 t chromium slags. the stacking of the most of chromium slags of handling rate less than 80%. and landfill all do not meet hazardous waste safe disposal requirement, heap is stored in Important Water Source and densely populated areas, serious threat urban ecological environment, be called as " fearful city malignant tumor ", " city bomb ".The harm of chromium slag is mainly from Cr (VI), processes long-term stacking if do not added, Cr wherein (VI) through rainwater leaching by remittance rainwash or permeate the ground, polluted underground water.Cr (VI) polluted underground water is extracted out and to be processed, and making it meet underground standards of water quality (GB/T 14848-1993) III class standard, to require (≤0.05 mg/L) to note back more underground, is a kind of processing method.Extracting the most frequently used method while processing out is absorption method.At present, more about the research of bentonite, recessed excellent stone and zeolite-loaded shitosan absorption Cr (VI), and the research of kaoline loaded shitosan absorption Cr (VI) is less.
Shitosan abundant raw material, be difficult for causing secondary pollution and itself there is strong chelation, all fine to the suction-operated of each heavy metal species, but exist on the high side, under low pH, hold diffluent shortcoming, range of application is subject to certain limitation.Kaolin has that chemical stability is good, plasticity is strong, aboundresources, the advantage such as cheap, if the two is compound, make chitosan molecule enter kaolin interlayer, can increase kaolinic interlamellar spacing, be conducive to Cr (VI) and enter interlayer, when improving absorption property, effectively reduce costs.
Summary of the invention
The present invention aims to provide a kind of preparation method that can effectively process the kaoline loaded shitosan of chromium slag contaminated underground water.
The preparation method of kaoline loaded shitosan of the present invention, comprises the following steps:
Shitosan is joined in the acetum of mass fraction 5%, make the shitosan colloidal sol of mass fraction 2%; Mass ratio by 0.06 slowly adds kaolin in above-mentioned shitosan colloidal sol, continues to stir l h, is then placed in 100 ℃ of baking oven heat dryings, porphyrize.
The present invention by chitosan loaded on bigger serface kaolin, active group in chitosan molecule can be acted on Cr (VI) more efficiently, optimize sorbent structure, improve Composite Adsorbent Absorbing performance, this compound adsorbent possesses the advantages such as environmental friendliness, method of operating is simple, action time is short simultaneously, and reduced processing cost, be suitable for processing chromium slag contaminated underground water.
The specific embodiment
Embodiment mono-
Take 2.0g shitosan, join in the acetum of mass fraction 5%, make the shitosan colloidal sol of mass fraction 2%; Get 15mL shitosan colloidal sol, slowly add wherein kaolin, continue to stir l h, furnishing pasty state, makes it abundant infiltration; This pastel is placed in to 100 ℃ of baking oven heat dryings, porphyrize.
Claims (1)
1. the preparation method of kaoline loaded shitosan, is characterized in that comprising the following steps:
Shitosan is joined in the acetum of mass fraction 5%, make the shitosan colloidal sol of mass fraction 2%; Mass ratio by 0.06 slowly adds kaolin in above-mentioned shitosan colloidal sol, continues to stir l h, is then placed in 100 ℃ of baking oven heat dryings, porphyrize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475329.9A CN103521190A (en) | 2013-10-13 | 2013-10-13 | Preparation method for kaolin loaded with chitosan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475329.9A CN103521190A (en) | 2013-10-13 | 2013-10-13 | Preparation method for kaolin loaded with chitosan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103521190A true CN103521190A (en) | 2014-01-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310475329.9A Pending CN103521190A (en) | 2013-10-13 | 2013-10-13 | Preparation method for kaolin loaded with chitosan |
Country Status (1)
| Country | Link |
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| CN (1) | CN103521190A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108618982A (en) * | 2018-06-06 | 2018-10-09 | 中南大学 | A kind of kaolinite gel rubber material and its application at the sun-proof aspect of physical skin |
| CN110624510A (en) * | 2019-09-11 | 2019-12-31 | 合肥学院 | Composite adsorbent and method for treating chrome black-containing T printing and dyeing wastewater by using same |
| CN114471480A (en) * | 2022-03-01 | 2022-05-13 | 武汉科技大学 | Method for preparing chitosan-based adsorbent based on click chemical reaction |
-
2013
- 2013-10-13 CN CN201310475329.9A patent/CN103521190A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108618982A (en) * | 2018-06-06 | 2018-10-09 | 中南大学 | A kind of kaolinite gel rubber material and its application at the sun-proof aspect of physical skin |
| CN110624510A (en) * | 2019-09-11 | 2019-12-31 | 合肥学院 | Composite adsorbent and method for treating chrome black-containing T printing and dyeing wastewater by using same |
| CN110624510B (en) * | 2019-09-11 | 2021-10-29 | 合肥学院 | Composite adsorbent and method for treating chrome black-containing T printing and dyeing wastewater by using same |
| CN114471480A (en) * | 2022-03-01 | 2022-05-13 | 武汉科技大学 | Method for preparing chitosan-based adsorbent based on click chemical reaction |
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