Preparation method of adsorbing material for removing anions in water and application of adsorbing material

An adsorption material and anion technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., can solve the problems of complex preparation process and high cost, and achieve simple preparation process, short cycle and wide sources Effect

Inactive Publication Date: 2018-04-24
DALIAN UNIV OF TECH
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Problems solved by technology

[0005] The present invention aims at the shortcomings of current silver-based and copper-based adsorption materials such as high cost and complicated preparation proc

Method used

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  • Preparation method of adsorbing material for removing anions in water and application of adsorbing material
  • Preparation method of adsorbing material for removing anions in water and application of adsorbing material
  • Preparation method of adsorbing material for removing anions in water and application of adsorbing material

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[0027] The present invention will be described below with specific examples, but it should be understood that these examples are only used to illustrate the present invention and do not constitute a limitation on the scope of the present invention.

[0028] A preparation method of cross-linked chitosan microsphere adsorption material is as follows:

[0029] (1) Add 2g of powdered chitosan to 100mL of 1% acetic acid solution, and stir to fully dissolve the chitosan;

[0030] (2) Take 60 mL of liquid paraffin, first add 2 mL Span-80, and then add 20 mL of the product of step (1), and stir for 8 minutes in a 6300 rpm high-speed dispersion homogenizer;

[0031] (3) The product obtained in step (2) is heated to 50°C in a water bath, 0.3 mL of glutaraldehyde with a volume fraction of 50% is added dropwise, and the reaction is stirred for 4 hours;

[0032] (4) Demulsify the product obtained from the reaction in step (3), filter, and rinse with 300 mL of ethanol and 400 mL of deionized water, r...

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Abstract

The invention discloses a preparation method of an adsorbing material for removing anions in water and application of the adsorbing material, and belongs to the technical field of sewage purificationtreatment in environmental protection. A chitosan acetic acid solution is taken as a material, liquid paraffin is taken as an organic dispersion medium, glutaric dialdehyde is taken as a crosslinkingagent, and a crosslinking chitosan microsphere is obtained through an emulsion crosslinking method. A crosslinking chitosan microsphere adsorbing agent prepared by adopting the method has good adsorption performance and cyclic utilization performance to iodine ions. Furthermore, the adsorbing agent also can adsorb other halide ions and oxyacid radical-containing ions and has great adsorption capacity. The adsorbing material prepared by the preparation method disclosed by the invention provides a new technical reference for removing anions in wastewater and has good recovery and cyclic utilization effects. The raw materials required for the adsorbing material are natural, nontoxic, universal and easily available, and the adsorbing material is low in price, simple in preparation process, high in treatment efficiency, short in treatment period and convenient for regenerated treatment and is an effective adsorbing agent for treating anions in wastewater.

Description

technical field [0001] The invention discloses an adsorption material for removing anions in water, including halogen ions and oxyacid ions, and a preparation method thereof, belonging to the technical field of sewage purification and treatment in environmental protection. Background technique [0002] The process of production and utilization of chemical products will cause various environmental pollution problems, such as waste water discharge. Industrial wastewater has complex components, such as heavy metal ions such as copper, halogens and oxyacid anions, etc. Existing waste water mainly deals with the contained cations, and there are few studies on anions. In addition to chlorine ions, fluorine, iodine and bromine are common halogen elements in wastewater. If they are discharged directly, they will not only pollute the environment but also cause waste of resources. Iodine and its radioactive isotope iodine-131 mainly come from nuclear energy wastewater, which has the...

Claims

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Application Information

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IPC IPC(8): B01J20/30B01J20/24C02F1/28C02F101/12C02F101/10
CPCB01J20/24B01J20/28019C02F1/28C02F1/286C02F2101/10C02F2101/101C02F2101/12
Inventor 张文君李晴范险林毛倩贺高红
Owner DALIAN UNIV OF TECH
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