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Application of activated carbon modified material and application in removing arsenic from water

A technology of granular activated carbon and adsorption materials, which is applied in the direction of water pollutants, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., and can solve the problems of food safety and restoration efficiency that are greatly affected by environmental and climatic conditions. No high-level problems, low cost of use, simple preparation process, and good use effect

Inactive Publication Date: 2010-12-22
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The biggest problem with the above bioremediation methods is that the restoration efficiency is not high or the restoration is greatly affected by environmental and climatic conditions. At the same time, the arsenic absorbed by plants may enter the food chain, causing food safety problems

Method used

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  • Application of activated carbon modified material and application in removing arsenic from water
  • Application of activated carbon modified material and application in removing arsenic from water
  • Application of activated carbon modified material and application in removing arsenic from water

Examples

Experimental program
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Effect test

Embodiment 1

[0057] An adsorption material for removing arsenic from water, the components by weight are as follows:

[0058] Based on the dry basis of the finished product as 200kg:

[0059] 10-30 mesh coal-based granular activated carbon 180kg;

[0060] Ferrous sulfate heptahydrate 9.0kg;

[0061] Titanium tetrachloride 11.0kg.

[0062] Prepare as follows:

[0063] 1) Prepare FeSO with a certain amount of water according to the formula 4 Solution, immerse 10-30 mesh coal-based granular activated carbon into FeSO 4 In the solution, ultrasonic wave was mixed at 50°C for 30 minutes, left to stand for 24 hours, and the supernatant was poured out to obtain material 1;

[0064] 2) Prepare TiCl with a certain amount of water according to the formula 4 solution, material 1 was immersed in TiCl 4 In the solution, use an ultrasonic wave with a working frequency of 40KHz to mix at 50°C for 30 minutes, let it stand for 24 hours, and pour out the supernatant to obtain material 2;

[0065] 3) ...

Embodiment 2

[0068] According to the preparation method of embodiment 1, present embodiment is wherein another formula, and the component by weight is as follows:

[0069] Based on the dry basis of the finished product as 200kg:

[0070] 10-30 mesh coal-based granular activated carbon 175kg;

[0071] Ferrous sulfate heptahydrate 4.5kg;

[0072] Titanium tetrachloride 21.5kg.

[0073] The adsorption material prepared in this example is used to adsorb As(V) / As(III) simulated arsenic-containing wastewater prepared with 100 μg / L As(V) / As(III) standard stock solution under laboratory conditions, so that The adsorption rate of As(V) increased from 20.12% of the original 10-30 mesh granular coal-based activated carbon to 95.45%, the concentration of As(V) dropped to 4.55 μg / L, and the adsorption rate of As(III) increased from 17.07 % increased to 92.65%, As(III) concentration dropped to 7.35μg / L (see figure 2 ).

Embodiment 3

[0075] According to the preparation method of embodiment 1, present embodiment is wherein another formula, and the component by weight is as follows:

[0076] Based on the dry basis of the finished product as 200kg:

[0077] 10-30 mesh coal-based granular activated carbon 170kg;

[0078] Ferrous sulfate heptahydrate 9.0kg;

[0079] Titanium tetrachloride 21.5kg.

[0080] The adsorption material prepared in this example is used to adsorb As(V) / As(III) simulated arsenic-containing wastewater prepared with 100 μg / L As(V) / As(III) standard stock solution under laboratory conditions, so that Its adsorption rate for As(V) increased from 20.12% of the original 10-30 mesh granular coal-based activated carbon to 95.10%, the concentration of As(V) dropped to 4.90 μg / L, and the adsorption rate for As(III) increased from 17.07 % increased to 92.34%, As(III) concentration dropped to 7.66μg / L (see figure 2 ).

[0081] According to the technical solutions and examples provided by the pr...

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Abstract

The invention belongs to the technical field of water pollution repair, and in particular relates to the preparation and the application of an adsorbent material suitable for removing arsenic from water. The adsorbent material is characterized by comprising the following components based on the dry basis (200kg) of a finished product: 170 to 185kg of 10 to 30-mesh coal granular activated carbon, 4.0 to 9.5kg of ferrous sulfate heptahydrate and 10.5 to 22.0kg of titanium tetrachloride; and the adsorbent material for removing the arsenic from the water is obtained by mixing the components. The adsorbent material of the invention can effectively remove the arsenic from the water and reduce the concentration of the arsenic in a water body so as to meet the sanitary standard of drinking water.

Description

technical field [0001] The invention belongs to the technical field of remediation of heavy metal pollution in water, and in particular relates to the preparation and application of a chemical adsorption material for removing arsenic from water. The material of the invention can adsorb the arsenic on the arsenic-polluted water body, reduce the concentration of arsenic in the water body, and ensure the safety of drinking water. technical background [0002] The pollution of arsenic to the environment, especially the water environment, is becoming more and more serious. The discharge of arsenic-containing industrial wastewater such as metallurgy, chemical industry, tanning, and textiles, and the use of arsenic-containing chemicals have sharply increased the arsenic content in groundwater in some areas. my country is one of the countries with a wide range of endemic arsenicosis endemic areas in the world. The vast rural areas mainly use groundwater as the source of drinking wat...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/32C02F1/28C02F101/20
Inventor 涂书新龙小燕秦艳艳黄永柄马琳张小明
Owner HUAZHONG AGRI UNIV
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