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Method for decoloring and degrading soluble azo dyes through catalysis of chloroperoxidase and oxidation of H2O2

A chloroperoxidase and azo dye technology, which is applied in chemical instruments and methods, oxidized water/sewage treatment, water/sewage treatment, etc. dyes and other problems, to achieve the effect of improving biodegradability, fast speed and simple operation steps

Inactive Publication Date: 2011-08-17
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently commonly used coagulation method is basically unable to deal with such water-soluble dyes, and various chemical oxidation methods have problems such as low chromaticity removal rate, large fluctuations in treatment effect, complex process and secondary pollution.

Method used

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  • Method for decoloring and degrading soluble azo dyes through catalysis of chloroperoxidase and oxidation of H2O2
  • Method for decoloring and degrading soluble azo dyes through catalysis of chloroperoxidase and oxidation of H2O2
  • Method for decoloring and degrading soluble azo dyes through catalysis of chloroperoxidase and oxidation of H2O2

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take the decolorization degradation of the water-soluble aniline blue solution of 10mmol / L as an example with the amount concentration of 1000mL substance, the raw materials used and the decolorization degradation method thereof are as follows:

[0022] 1. Prepare the solution

[0023] The concentration of the prepared substance is 0.1mol / L of KH 2 PO 4 -K 2 HPO 4 Buffer solution, adjust its pH to be 5.5 with 3mol / L hydrochloric acid, prepare the chloroperoxidase solution that the amount concentration of this buffer solution substance is 0.1mmol / L, use the H of 30% with mass fraction 2 o 2 The solution and distilled water are prepared according to conventional methods. The concentration of the substance is 0.2mol / L H 2 o 2 aqueous solution.

[0024] 2. Decolorization and degradation

[0025] Add 40mL of chloroperoxidase solution with a substance concentration of 0.1mmol / L to 1000mL of water-soluble aniline blue solution with a substance concentration of 10mmol / L...

Embodiment 2

[0032] Take the decolorization degradation of the water-soluble aniline blue solution of 10mmol / L as an example with the amount concentration of 1000mL substance, the raw materials used and the decolorization degradation method thereof are as follows:

[0033] In the decolorization degradation step 2 of the present embodiment, in the water-soluble aniline blue solution that the amount concentration of 1000mL substance is 10mmol / L, add the chloroperoxidase solution that the amount concentration of 10mL substance is 0.1mmol / L, mix homogeneously, The volume ratio of the water-soluble aniline blue solution that the substance concentration is 10mmol / L and the chloroperoxidase solution that the substance concentration is 0.1mmol / L is 1: 0.01, and the H that the substance concentration is 3mol / L 2 SO 4The concentration of the solution or substance is 3mol / L NaOH solution to adjust the pH to 3, adding 40mL of the substance concentration is 0.2mol / L of H 2 o 2 Aqueous solution, the w...

Embodiment 3

[0035] Take the decolorization degradation of the water-soluble aniline blue solution of 10mmol / L as an example with the amount concentration of 1000mL substance, the raw materials used and the decolorization degradation method thereof are as follows:

[0036] In the decolorization degradation step 2 of the present embodiment, the chloroperoxidase solution that the amount concentration of 60mL substance is 0.1mmol / L is added in the water-soluble aniline blue solution that the amount concentration of 1000mL substance is 10mmol / L, mixes homogeneously, The volume ratio of the water-soluble aniline blue solution that the substance concentration is 10mmol / L and the chloroperoxidase solution that the substance concentration is 0.1mmol / L is 1:0.06, and the H that the substance concentration is 3mol / L 2 SO 4 The concentration of the solution or substance is 3mol / L NaOH solution to adjust the pH to 3, adding 80mL of the substance concentration is 0.2mol / L of H 2 o 2 Aqueous solution,...

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Abstract

The invention discloses a method for decoloring and degrading soluble azo dyes through catalysis of chloroperoxidase and oxidation of H2O2, which comprises the following steps: preparing solution; decoloring and degrading; and computing the decoloring and degrading rate of the azo dyes. In the established method for decoloring and degrading soluble azo dyes orange II, bromophenol blue, methylene blue and soluble aniline blue wastewater through the catalysis of the chloroperoxidase and the oxidation of the H2O2, the H2O2 is used as an oxidant based on a bio-enzyme catalysis degradation system,a large conjugate system and azo structures and other chormophoric groups in the dyes are quickly damaged, irreversible decoloration and degradation of the dyes are realized, and the biochemical quality is improved. The method has the advantages of high speed of decoloring and degrading, high efficiency, simple operating steps, low consumption of the chloroperoxidase and the H2O2, and the like, and can be applied to treatment of industrial wastewater with soluble azo dyes.

Description

technical field [0001] The invention belongs to the technical field of water, waste water or sewage treatment, and specifically relates to a method of using enzymes to catalyze H 2 o 2 Oxidation method to achieve rapid decolorization and degradation of azo dye wastewater. Background technique [0002] my country is the largest country in textile printing and dyeing, and the textile printing and dyeing industry is a major player in industrial wastewater discharge, accounting for about 35% of the entire industrial wastewater discharge. According to data, the discharge of printing and dyeing wastewater in my country is about 4 million m3 per day, and dye wastewater has become one of the key sources of environmental pollution. [0003] Orange II, bromophenol blue, methylene blue and water-soluble aniline blue are water-soluble azo dyes, which are widely used in the printing and dyeing industry and are one of the main components of printing and dyeing wastewater. The structure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F1/58
Inventor 蒋育澄茹雪娇胡满成李淑妮翟全国
Owner SHAANXI NORMAL UNIV
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