Modified bentonite adsorbent for removing copper in polluted water body and preparation method thereof

A technology of bentonite and adsorbent, which is applied in the field of modified bentonite adsorbent and its preparation, and can solve problems such as lack of adsorbent materials

Inactive Publication Date: 2017-03-08
北京源清益壤环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a lack of cheap and efficient adsorption materials for removing copper in polluted water bodies. Therefore, the development of modified

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Add 33.48g of bentonite to 250mL of nitric acid solution with a concentration of 10% by mass, stir at 1000r / min for 50 minutes, remove the liquid by filtration, wash with 500mL of deionized water and place in a drying oven at 105°C 35 minutes, obtain substance A0;

[0050] (2) 11.26g of chitosan is added to 900mL of 5% acetic acid solution in mass percent concentration, stirred for 3 minutes under the condition of 1000r / min, shaken up and divided into 5 equal parts to obtain mixed solution G1 and mixed solution G2 , mixed solution G3, mixed solution G4, mixed solution G5;

[0051] (3) Add 4.55 g of carboxymethyl-β-cyclodextrin and 50 mL of dimethyl sulfoxide into 150 mL of isopropanol, stir for 3 minutes at 1000 r / min, shake well and divide into 5 equal parts to obtain Mixed solution H1, mixed solution H2, mixed solution H3, mixed solution H4, mixed solution H5;

[0052] (4) Add the mixed solution H1 and 8mL of 2-(2,4-dichlorophenyl)-2-butyl-oxirane into the mixed...

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PUM

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Abstract

The invention discloses a modified bentonite adsorbent for removing copper in a polluted water body. A substance A is prepared by modifying cleaned bentonite with a mixed solution prepared from chitosan, acetic acid, carboxymethyl-beta-cyclodextrin, dimethyl sulfoxide, isopropanol and 2-(2,4-dichlorophenyl)-2-butyl-ethylene oxide; a substance B is prepared by modifying the substance A with a mixed solution prepared from SnCl4, AlCl3, Mn(NO3)2, and Co(NO3)2; a substance C is prepared by modifying the substance B with a mixed solution prepared from tetra-n-butyl titanate, octylmethyldiethoxysilane and tetramethyl bipropenyl triamine; and a substance, namely the modified bentonite adsorbent for removing the copper in the polluted water body, is obtained by modifying the substance C with a mixed solution prepared from acrylic acid, potassium persulfate, polyvinylpyrrolidone, 3-acryloyloxy propyl methyl dichlorosilane.

Description

technical field [0001] The invention belongs to the technical field of heavy metal pollution control in polluted water, and in particular relates to a modified bentonite adsorbent for removing copper in polluted water and a preparation method thereof. Background technique [0002] Due to the characteristics of high toxicity, refractory, and persistence of heavy metals, heavy metal pollution in water bodies has become a serious and common environmental problem, which has attracted extensive attention from domestic and foreign scholars. Heavy metals can interact with proteins in the human body to inactivate them, and they can also accumulate in certain organs of the human body. If they exceed the limit that the human body can bear, they will affect the lungs, kidneys, liver and other important organs through blood circulation. , can cause poisoning and other diseases, and is extremely harmful to the human body. Therefore, it is of great social, economic and environmental sign...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/30C02F1/28C02F101/20
CPCB01J20/12B01J20/3078B01J20/3085C02F1/288C02F2101/20
Inventor 不公告发明人
Owner 北京源清益壤环保科技有限公司
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