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Modified kaolin adsorbent for removing lead in polluted water and preparation method of modified kaolin adsorbent

A technology of kaolin and adsorbent, applied in the direction of water pollutants, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve problems such as shortage

Inactive Publication Date: 2017-04-05
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 lead in polluted water. Therefore, the development of modified kaolin adsorbents for removing lead in polluted water is of great significance for the treatment of heavy metal pollution in polluted water.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] (1) Add 33.22g of kaolin to 250mL of nitric acid solution with a concentration of 10% by mass, stir for 50 minutes under the condition of 1000r / min, filter and remove the liquid, wash with 500mL of deionized water and place in a drying oven at 105°C 35 minutes, obtain substance A0;

[0054] (2) 15.02g 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;

[0055] (3) Add 5.46 g of β-cyclodextrin and 50 mL of dimethyl sulfoxide into 150 mL of isopropanol, stir for 3 minutes under the condition of 1000 r / min, shake well and divide into 5 equal parts to obtain the mixture H1, Mixed solution H2, mixed solution H3, mixed solution H4, mixed solution H5;

[0056] (4) Add the mixed solution H1 and 8mL epichlorohydrin into the mixed solution...

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PUM

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Abstract

The invention discloses a modified kaolin adsorbent for removing lead in polluted water. A preparation method comprises the following steps that after being cleaned, kaolin is modified with a mixed solution prepared from chitosan, acetic acid, beta-cyclodextrin, dimethyl sulfoxide, isopropanol and epichlorohydrin to prepare a substance A; the substance A is modified with a mixed solution prepared from ZrC14, CeCl3, Zn(NO3)2 and Mn(NO3)2 to prepare a substance B; the substance B is modified with a mixed solution prepared from tetrabutyl titanate, N,N-dimethyl formamide and diethylenetriamine to prepare a substance C; and the substance C is modified with a mixed solution prepared from acrylic acid, potassium persulfate, polyvinylpyrrolidone, and N,N-methylenebis acrylamide to prepare a substance, that is, the modified kaolin adsorbent for removing lead in polluted water.

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 kaolin adsorbent for removing lead 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 significa...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/30C02F1/28C02F101/20
CPCB01J20/12B01J20/0222B01J20/0244C02F1/28C02F2101/20
Inventor 不公告发明人
Owner 北京源清益壤环保科技有限公司