Recycling method of waste powdered activated carbon

A powder activated carbon, activated carbon technology, applied in separation methods, filter regeneration, chemical instruments and methods, etc., to ensure stable operation, prolonged adsorption period, and good degradation effect.

Active Publication Date: 2014-04-16
HULUNBEIER NORTHEAST FUFENG BIOTECHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of this invention is to solve the processing problem of waste powder activated carbon in the production of sodium glutamate, and provide a kind of recycling method of waste powder activated carbon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1 The specific surface area of ​​activated carbon finally obtained is 1118.5m 2 / g, the iodine adsorption value is 808.1mg / g, the methylene blue adsorption value is 210.5mg / g, and the regeneration rate is 90%.

[0046] The quality of activated carbon before and after recovery is comparatively analyzed, as shown in Table 1 below:

[0047] Table 1

[0048] project new charcoal recovered charcoal Exterior black fine powder black fine powder identify Positive reaction Positive reaction Decolorization power (0.1g to remove 0.15% anhydrous methylene blue solution) ml, ≧ 10.0 10.0 Iron salt (%)≦ 0．10 0.10 Heavy metal (%)≦ 0.003 0．003 water soluble residue 0.32 0.39 Sulfide No reaction No reaction

[0049] Hulunbeier Northeast Fufeng Biotechnology Co., Ltd. has an annual output of 200,000 tons of sodium glutamate, and 5,000 tons of waste powder activated carbon produced by...

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PUM

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Abstract

The invention discloses a recycling method of waste powdered activated carbon. According to the technical scheme, the method comprises the following steps: soaking the waste powdered activated carbon generated during the refining of sodium glutamate with a hydrochloric acid in a pickling tank so as to remove partial ash and ferric salt impurities; and adding microorganisms for biological regeneration under the action of an electric field, thus finally preparing regenerated activated carbon. As the method is used, the purpose of treating the waste powdered activated carbon during the production of the sodium glutamate is realized; the recycling of resources is realized; the production cost is decreased. Thus, the significant economic and environment-friendly benefits are obtained.

Description

[0001] technical field [0002] The invention relates to the field of regeneration of biological activated carbon, and specifically provides a method for regeneration and utilization of waste powder activated carbon. [0003] Background technique [0004] Activated carbon, also known as activated carbon black, is black powder or granular amorphous carbon. It is a hydrophobic adsorbent made from carbon-containing substances as raw materials and subjected to high-temperature carbonization and activation. Activated carbon contains a large number of micropores and has a huge specific surface area, which can effectively remove pigments, odors, most organic pollutants and some inorganic substances. Activated carbon is a carbonaceous adsorption material with a highly developed pore structure and a large specific surface area. Its main performance is a strong adsorption capacity for molecules. Activated carbon has been widely used in many fields, such as food industry It can be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/34B01J20/20
Inventor 张传森李克习黄敏
Owner HULUNBEIER NORTHEAST FUFENG BIOTECHNOLOGIES CO LTD
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