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Preparation method of chitosan-soybean protein composite porous microspheres for lead adsorption

A technology of soybean protein and porous microspheres, which is applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve problems that have not been studied in the past, simplify the operation process, and improve lead adsorption Efficiency, the effect of reducing the preparation cost

Active Publication Date: 2017-11-24
GUILIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0004] At present, there is no relevant research on the preparation of chitosan-soybean protein composite porous microspheres for lead adsorption

Method used

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  • Preparation method of chitosan-soybean protein composite porous microspheres for lead adsorption

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Experimental program
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Embodiment Construction

[0023] (1) Preparation of chitosan-soybean protein composite porous microspheres:

[0024] Weigh 4g of chitosan in a 100mL beaker, add 50mL of acetic acid solution with a concentration of 2% by mass, stir and dissolve, then let stand for 12 hours, remove air bubbles in the solution to obtain a chitosan solution, and set aside. Add 2.0g of soybean protein and 40mL of secondary water into a 100mL beaker, stir until completely dissolved to obtain a soybean protein solution, and set aside; mix 40mL of the above-mentioned chitosan solution with 40mL of the above-mentioned soybean protein solution, and add 2.0g of nano-silica, Stir evenly to obtain chitosan-soybean protein-silicon dioxide mixed liquid, set aside.

[0025] Take 140mL of liquid paraffin in a 250mL three-necked flask, add dropwise 4 drops of analytically pure active agent Span 80, mechanically stir (300r / min) for 30 minutes, heat the water bath to 60°C, and mix 60mL of chitosan-soybean protein-silica Add the mixed sol...

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Abstract

The invention discloses a preparation method of chitosan-soybean protein composite porous microspheres for lead adsorption. The chitosan-soybean protein composite porous microsphere is prepared from raw materials soybean protein and chitosan through glutaraldehyde crosslinking, and is used for micro-column adsorbing lead in liquid as an adsorption material, wherein the adsorption capacity of the chitosan-soybean protein composite porous microsphere to lead is 42.8 mg / g. The preparation method overcomes the defects of complex preparation and high cost of existing materials and defects such as complex static adsorption operation and steps, lowers the material preparation cost, reduces manual operation steps, simplifies the operation process, and improves the lead adsorption efficiency.

Description

technical field [0001] The invention relates to a preparation method of chitosan-soybean protein composite porous microspheres for lead adsorption. Background technique [0002] With the development of global industry, lead pollution has posed a great threat to the environment and human health. It is urgent to develop fast and convenient lead adsorption materials to meet the needs of environmental testing. [0003] Currently, methods for separating and enriching cadmium in water include precipitation, ion exchange, and adsorption. Among them, the adsorption method is widely used because of its simplicity, high efficiency and recyclable adsorption materials. [0004] At present, there is no related research on the preparation of chitosan-soybean protein composite porous microspheres for lead adsorption. Contents of the invention [0005] The invention aims to provide a preparation method of chitosan-soybean protein composite porous microspheres for lead adsorption. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30G01N21/31
CPCB01J20/265B01J20/28021B01J20/28054G01N21/3103
Inventor 吴雄志庞晓霞李娜
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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