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Preparation method of chitosan composite adsorption material for adsorbing organic matter

A composite adsorption material, chitosan technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of limited application scope and poor stability, and achieve good application prospects, high adsorption efficiency, and good adsorption effect.

Pending Publication Date: 2016-11-02
西安以锵电子科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, chitosan has a large number of active groups (amino and hydroxyl), and is also a good adsorbent. However, chitosan is easily soluble in acidic solution and has poor stability, which also limits its application to a large extent. scope

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0021] The embodiment of the present invention mainly provides a method for preparing a composite adsorption material for adsorbing organic matter. For better understanding, the present invention will be further described below in conjunction with specific examples, but the content of the present invention is not limited thereto.

[0022] The preparation method of the composite adsorption material for adsorbing organic matter mainly comprises the following steps:

[0023] (1) take chitosan as raw material, at first carry out compound with manganese dioxide, obtain chitosan-manganese dioxide;

[0024] (2) taking the above-mentioned chitosan-manganese dioxide as a matrix, and using thiocarbazide as a cross-linking agent to prepare cross-linked chitosan-manganese dioxide;

[0025] (3) Based on the above-mentioned cross-linked chitosan-manganese dioxide, with 2-chloromethylbenzimidazole as a ligand, the cross-linked chitosan-manganese dioxide is chemically grafted to prepare a Ch...

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Abstract

The invention relates to a preparation method of a chitosan composite adsorption material for adsorbing organic matters: using chitosan as a raw material, firstly compounding with manganese dioxide to obtain chitosan-manganese dioxide; Linking agent to prepare cross-linked chitosan-manganese dioxide; finally based on cross-linked chitosan-manganese dioxide, with 2-chloromethylbenzimidazole as ligand, chemical grafting is carried out to prepare a A chitosan composite adsorption material for adsorption of organic matter. The composite adsorption material has the characteristics of large adsorption capacity, high adsorption efficiency, good oxidative degradation ability, strong acid resistance, convenient solid-liquid separation, low production cost, environmental friendliness, good adsorption effect and the like. If it is put into specific development and application, it has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of adsorbent production, and in particular relates to a preparation method of a chitosan composite adsorption material used for adsorbing organic matter. Background technique [0002] Pathogenic microorganisms and toxic chemicals in water are the two main factors affecting drinking water hygiene and safety, while organic pollution is more prominent in water pollution. About 80% of the rivers in my country are polluted by different degrees of organic matter. Some organic pollutants degrade slowly in the environment and stay for a long time. They can pose a direct threat to aquatic organisms and human health through biomagnification and food chain enrichment and transport, resulting in potential hazards. At present, there are four kinds of wastewater treatment: chemical precipitation, activated carbon adsorption, solvent extraction and ion exchange adsorption. The chemical precipitation method uses alkaline m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30
Inventor 李孟顺
Owner 西安以锵电子科技有限责任公司