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Received July 15, 2014
Accepted November 30, 2014
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Optimization of Anthraquinone Dyes Decolorization Conditions with Response Surface Methodology by Aspergillus
College of Chemistry and Chemical Engineering, Shihezi University, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang, Bingtuan, Xinjiang, Shihezi 832003, China
xxl_food@shzu.edu.cn
Korean Chemical Engineering Research, June 2015, 53(3), 327-332(6), 10.9713/kcer.2015.53.3.327 Epub 2 June 2015
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Abstract
A large amount of dye wastewater poses a threat to environmental safety. Disperse blue, an anthraquinone dye that is widely used in textile dyes, is difficult to degrade in wastewater. In this work, one fungus was screened according to the decolorization rate of disperse blue. The fungus was identified and named Aspergillus XJ-2 on the basis of its morphological characteristics and 18s rDNA. Response surface method was used to optimize culture conditions for A. XJ-2. The optimum values of obtained responses were as follows: temperature, 35 °C; pH, 5.2; carbon-to-nitrogen ratio, 30:5.5; and rotation ratio, 175 r·min-1. Under optimized conditions, the decolorization rate of A. XJ-2 was up to 94.8% in 48 h.
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