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Sepiolite-based heavy metal adsorption material and preparation method thereof

An adsorption material, sepiolite technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of small channels, weak surface acidity, and high impurity content, and improve the adsorption effect and operation. Simple, fast response

Inactive Publication Date: 2017-05-17
YUYAO QINGDA MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Natural sepiolite has low grade, high impurity content, weak surface acidity, small channels, and poor thermal stability, so natural sepiolite is rarely used in the treatment of heavy metal sewage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A heavy metal adsorption material based on sepiolite, consisting of the following raw materials by weight: 70 parts of sepiolite, 12 parts of sodium hexametaphosphate, 8 parts of sodium bicarbonate, 2 parts of benzotriazole, n-butyl titanate 4 parts of ester, 3 parts of starch xanthate, 2 parts of pentasodium diethylene triamine pentaacetate, 5 parts of citric acid, 15 parts of polyferric chloride.

[0026] In the present embodiment, the preparation method of the heavy metal adsorption material based on sepiolite, the steps are as follows:

[0027] 1) Weigh citric acid, add 5 times the weight of deionized water, and stir and mix at 50°C for 30 minutes to obtain a citric acid solution;

[0028] 2) take sepiolite, after superfine pulverization, cross 200 mesh sieves, obtain sepiolite micropowder;

[0029] 3) Put the sepiolite micropowder in the container, add 8 times the weight of deionized water, stir and mix for 2 hours, let it stand for 1.5 hours, discard the supernat...

Embodiment 2

[0036] A heavy metal adsorption material based on sepiolite, consisting of the following raw materials by weight: 72 parts of sepiolite, 13 parts of sodium hexametaphosphate, 9 parts of sodium bicarbonate, 4 parts of benzotriazole, n-butyl titanate 6 parts of ester, 5 parts of starch xanthate, 3 parts of pentasodium diethylene triamine pentaacetate, 6 parts of citric acid, 17 parts of polyferric chloride.

[0037] In the present embodiment, the preparation method of the heavy metal adsorption material based on sepiolite, the steps are as follows:

[0038] 1) Weigh citric acid, add 6 times the weight of deionized water, and stir and mix at 52°C for 40 minutes to obtain a citric acid solution;

[0039] 2) take sepiolite, after superfine pulverization, cross 200 mesh sieves, obtain sepiolite micropowder;

[0040] 3) Put the sepiolite micropowder in the container, add 9 times the weight of deionized water, stir and mix for 2.5 hours, let it stand for 1.5 hours, discard the supern...

Embodiment 3

[0047] A heavy metal adsorption material based on sepiolite, consisting of the following raw materials by weight: 75 parts of sepiolite, 14 parts of sodium hexametaphosphate, 10 parts of sodium bicarbonate, 3 parts of benzotriazole, n-butyl titanate 5 parts of ester, 5 parts of starch xanthate, 4 parts of pentasodium diethylene triamine pentaacetate, 7 parts of citric acid, 16 parts of polyferric chloride.

[0048] In the present embodiment, the preparation method of the heavy metal adsorption material based on sepiolite, the steps are as follows:

[0049] 1) Weigh citric acid, add 7 times the weight of deionized water, and stir and mix at 55°C for 35 minutes to obtain a citric acid solution;

[0050] 2) take sepiolite, after superfine pulverization, cross 300 mesh sieves, obtain sepiolite micropowder;

[0051] 3) Put the sepiolite micropowder in the container, add 10 times the weight of deionized water, stir and mix for 2.5 hours, let it stand for 1.5 hours, discard the supe...

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Abstract

The invention discloses a sepiolite-based heavy metal adsorption material. The heavy metal adsorption material consists of the following raw materials in parts by weight: 70-80 parts of sepiolite, 12-16 parts of sodium hexametaphosphate, 8-11 parts of sodium bicarbonate, 2-5 parts of benzotriazole, 4-7 parts of tetrabutyl titanate, 3-6 parts of starch xanthate, 2-5 parts of diethyl pentetic acid pentasodium 5-8 parts of citric acid and 15-18 parts of polymerization ferric chloride. The invention further discloses a preparation method of the sepiolite-based heavy metal adsorption material. As sepiolite is modified and compounded with other materials, the adsorption effect of the heavy metal adsorption material disclosed by the invention on heavy metal ions is greatly improved, and the prepared adsorption material is capable of effectively adsorb heavy metal ions in water, and has the advantages of being rapid in reaction speed and simple and convenient to operate.

Description

technical field [0001] The invention relates to the technical field of heavy metal adsorption materials, in particular to a sepiolite-based heavy metal adsorption material and a preparation method thereof. Background technique [0002] Science and technology is a double-edged sword. The rapid development of science and technology since the 21st century has promoted economic development and improved people's living standards. However, at the same time, human beings have also paid a heavy price. Due to the discharge of industrial "three wastes" motor vehicle exhaust, sewage irrigation and the use of pesticides, herbicides, fertilizers, etc., as well as the development of mining, the soil, water quality and atmosphere have been seriously polluted. [0003] Heavy metal pollution is a kind of pollution that is extremely harmful to human health. At present, heavy metal sewage is mainly treated by chemical method, physical adsorption method and biological method. Among them, physi...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28
Inventor 沈美珍
Owner YUYAO QINGDA MACHINERY