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Adsorption material for removing anions in water and preparation method thereof

An adsorption material and anion technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of high regeneration frequency of activated carbon, increased use cost, short saturation period, etc., and achieve a large amount of surfactant. , less energy consumption, not easy to desorb

Inactive Publication Date: 2011-12-14
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when activated carbon is used for the adsorption of anionic pollutants, the saturation period is short, resulting in a high frequency of activated carbon regeneration, which increases the cost of use.

Method used

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  • Adsorption material for removing anions in water and preparation method thereof
  • Adsorption material for removing anions in water and preparation method thereof
  • Adsorption material for removing anions in water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method for an adsorption material for removing anions in water, comprising the steps of:

[0026] (1) Weigh 0.064g of cationic surfactant cetyltrimethylammonium chloride and dissolve it in 200mL of deionized water, the concentration of cationic surfactant is 1mmol / L, add 0.1mol / L dilute hydrochloric acid solution dropwise Adjust the pH value of the solution to 3.0 to obtain a cationic surfactant solution;

[0027] (2), 0.5g pitch activated carbon material (pore volume 0.3mL / g, specific surface area 780m 2 / g) Disperse in the 200mL cationic surfactant solution obtained in step (1), at normal temperature and pressure, use a magnetic stirring device to disperse the activated carbon particles uniformly and let stand for 5h;

[0028] (3), the mixed solution after step (2) standing still is filtered in the filter device, the activated carbon is separated from the mixed solution, washed with deionized water and dried, and the obtained black granular activated ca...

Embodiment 2

[0030] A preparation method for an adsorption material for removing anions in water, comprising the steps of:

[0031] (1) Weigh 0.064g of cationic surfactant cetyltrimethylammonium chloride and dissolve it in 200mL of deionized water. The concentration of cationic surfactant is 1mmol / L, and add 0.1mmol / L dilute hydrochloric acid solution Adjust the pH value of the solution to 7.0 to obtain a cationic surfactant solution;

[0032] (2), 0.5g pitch activated carbon material (pore volume 0.3mL / g, specific surface area 780m 2 / g) Disperse in the 200mL cationic surfactant solution obtained in step (1), at normal temperature and pressure, use a magnetic stirring device to disperse the activated carbon particles uniformly and let stand for 5 h;

[0033] (3), the mixed solution after step (2) standing still is filtered in the filter device, the activated carbon is separated from the mixed solution, washed with deionized water and dried, and the obtained black granular activated carbo...

Embodiment 3

[0035] A preparation method for an adsorption material for removing anions in water, comprising the steps of:

[0036] (1) Weigh 0.064g of cationic surfactant cetyltrimethylammonium chloride and dissolve it in 200mL of ionized water. The concentration of cationic surfactant is 1mmol / L, and add 0.1mol / L sodium hydroxide solution dropwise Adjust the pH value of the solution to 10.0 to obtain a cationic surfactant solution;

[0037] (2), 0.5g pitch activated carbon material (pore volume 0.3mL / g, specific surface area 780m 2 / g) Disperse in the 200mL cationic surfactant solution obtained in step (1), at normal temperature and pressure, use a magnetic stirring device to disperse the activated carbon particles uniformly and let stand for 5h;

[0038] (3), the mixed solution after step (2) standing still is filtered in the filter device, the activated carbon is separated from the mixed solution, washed with deionized water and dried, and the obtained black granular activated carbon ...

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Abstract

The invention discloses an adsorption material capable of removing anion pollutants in water and a preparation method thereof. The adsorption material uses activated carbon as a carrier and loads cationic surfactants in its pores. The prepared activated carbon adsorption material has high adsorption performance and selectivity for anion pollutants in water, can prolong the service life of the adsorption material in water treatment, and reduce the use cost. The preparation process does not require heating and pressure, consumes less energy, is simple to operate, does not change the particle structure characteristics of the activated carbon, can be used repeatedly, and does not generate secondary pollution.

Description

technical field [0001] The invention relates to an adsorption material capable of removing anion pollutants in water and a preparation method thereof. Background technique [0002] Activated carbon adsorption is currently one of the important methods for removing micro-polluted toxic and harmful substances in water. However, due to its own physical and chemical characteristics, the adsorption capacity of activated carbon to organic pollutants in water is usually higher than that of inorganic pollutants such as anions. Therefore, when activated carbon is used for the adsorption of anionic pollutants, the saturation period is short, resulting in a high frequency of activated carbon regeneration, which increases the cost of use. [0003] As we all know, cationic surfactants such as quaternary ammonium salt-type surfactants have quaternary ammonium salt functional groups that mainly exist in the form of cations in water, and the surface is positively charged, which has good an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01J20/28C02F1/28
Inventor 陈维芳
Owner UNIV OF SHANGHAI FOR SCI & TECH
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