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ISSN Print: 2394-7500, ISSN Online: 2394-5869, CODEN: IJARPF

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International Journal of Applied Research

Vol. 3, Issue 1, Part L (2017)

Study of reduction products of ortho-hydroxyl substituted azo dyes on biodecolorization of azo dyes

Author(s)
Sateydeo Singh
Abstract
In this paper, the mediated effects of reduction products of some ortho-hydroxyl substituted azo dyes on biodecol-orization were investigated. The results indicated that the addition of reduction products could effectively accelerate dye decolorization by Shigella sp. QRZ-1. The best accelerating effect was obtained with the addition of reduction products of Acid Red 14 (AR14), resulting in an over 3-fold increase in decolorization efficiency of many azo dyes. In sequencing batch reactor experiments, the accelerating effect of reduction products of AR14 was more obvious (1.5-fold) during the startup of the system. When the dye concentration was increased to 500 mg L-1, the accelerated decolorization efficiency was still maintained around 95%. The presence of AR14 in the feed enhanced the decolorization performance of anaerobic sludge, indicating that the strategy may be beneficial for practical application. 1-Naphthol-2-amino-4-sulfonic acid, which is one of the reduction products of AR14, may function as redox mediator to speed up azo dye biodecolorization.
Pages: 963-967  |  175 Views  1 Downloads
How to cite this article:
Sateydeo Singh. Study of reduction products of ortho-hydroxyl substituted azo dyes on biodecolorization of azo dyes. Int J Appl Res 2017;3(1):963-967.
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