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Method for photodegrading organic arsenide

An organic arsenic and compound technology, applied in the field of photodegradation of organic arsenic compounds

Pending Publication Date: 2022-06-17
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] However, it has not been found in the prior art that ferric oxide loaded resorcinol-formaldehyde resin is used in the field of photocatalytic ROX

Method used

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  • Method for photodegrading organic arsenide
  • Method for photodegrading organic arsenide
  • Method for photodegrading organic arsenide

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Embodiment F

[0041] Example Fe 3 O 4 Preparation of supported resorcinol-formaldehyde resin

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Abstract

The invention provides a method for effectively treating an organic arsenic compound, namely Roxarsone (ROX), which comprises the following steps: placing a specific loading amount of ferroferric oxide loaded resorcinol-formaldehyde resin in a photocatalytic tube, adding an ROX solution, adjusting the pH value of a mixed solution to be less than 3, continuously stirring the mixed solution under a dark condition to achieve adsorption-desorption balance, and carrying out adsorption-desorption treatment on the mixed solution to obtain the Roxarsone. The method is characterized in that Fe3O4 is loaded with resorcinol-formaldehyde resin, a lamp is turned on for irradiation, ROX is degraded, the Fe3O4 loaded resorcinol-formaldehyde resin is prepared by dispersing resorcinol-formaldehyde resin, crystalline ferric chloride hexahydrate and sodium acetate into ethylene glycol containing CTAB according to the ratio of 100: 120.75: 696.6 for a hydrothermal reaction, and the removal rate of Roxarsone (ROX) within 2 h reaches 75%.

Description

technical field [0001] The present invention relates to a method for photodegrading organic arsenic compounds. Background technique [0002] As a feed additive that can improve feed conversion rate and improve animal coat color, phenylarsinic acid compound has been widely used in livestock and poultry breeding industry. Phenylarsinic acid compounds are difficult to be metabolized by the body, and more than 90% of ROX will eventually be excreted into water and soil with livestock and poultry manure. As a commonly used feed additive, it is frequently detected in livestock and poultry breeding wastewater. The concentration of roxarsine (ROX) detected in livestock and poultry breeding wastewater is as high as 14-54 mg / kg, which is easily decomposed into highly toxic inorganic arsenic in the natural environment. Species (iAs), including: arsenous acid and arsenic acid, which contaminate water and soil. iAs will endanger human health through the food chain. Among the traditiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30C02F1/72B01J31/06B01J31/28C02F101/30
CPCC02F1/30C02F1/722C02F1/725B01J31/069B01J31/28C02F2101/30C02F2305/026C02F2305/10B01J35/39
Inventor 周易周彦波高明王海川钟宇丰郭轩君汤祯瑾贺怡灵
Owner EAST CHINA UNIV OF SCI & TECH
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