Decolorization of Leather Dyeing Wastewater by Laccase of the White Rot Fungus Pycnoporus sp. Y1

In this study, laccase produced by the white rot fungus strain Pycnoporus sp. Y1 was used for the leather dyeing wastewater decolorization. The mediators including veratryl alcohol (VA), 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), hydroxybenzoic acid (HA), hydroxybenzotrizole...

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Bibliographic Details
Published in:Nature environment and pollution technology 2015-12, Vol.14 (4), p.881-881
Main Authors: Lu, Xinli, Zhao, Chun Hai, Zhao, Aijun, Zhang, Yuqi, Wu, Yichun, Chen, Suliang, Liang, Xiaohui
Format: Article
Language:English
Subjects:
Acids
Chemicals
Dyes
Energy consumption
Environmental impact
Enzymes
Experiments
Fermentation
Lignin
Oxidation
Reagents
Temperature
Water treatment
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Summary:In this study, laccase produced by the white rot fungus strain Pycnoporus sp. Y1 was used for the leather dyeing wastewater decolorization. The mediators including veratryl alcohol (VA), 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), hydroxybenzoic acid (HA), hydroxybenzotrizole (HOBT), and temperature, pH values, laccase concentration, and leather dyeing wastewater dilution ratio were all investigated in the experiments, and then four factors (mediators, temperatures, pH values, dilution ratios) were optimized by orthogonal experimental design. The optimal conditions for wastewater decolorization were obtained as follows: temperature of 50°C, pH 3.0, laccase concentration 4 U/mL, and the dilution ratio of 1-fold, the decolorization ratio could reach 58.42% in 10 min under the optimized conditions at last.
ISSN:0972-6268
2395-3454