Microbial diversity in a continuous system based on rice husks for biodegradation of the azo dyes Reactive Red 2 and Reactive Black 5

作者：Forss Jorgen^*; Pinhassi Jarone; Lindh Markus; Welander Ulrika

来源：Bioresource Technology, 2013, 130: 681-688.

DOI：10.1016/j.biortech.2012.12.097

• Decolorization
• Industrial wastewater
• Lignocellulosic material
• Indigenous decolorizers
• Liquid chromatography coupled with mass spectroscopy (LC/MS)

In the present study the degradation of two common azo dyes used in dye houses today, Reactive Black 5 and Reactive Red 2 was evaluated in biofilters. In two experiments, bioreactors performed over 80% decolorization at a hydraulic retention time of only 28.4 h with little production of metabolites. Molecular analyses showed a diverse and dynamic bacterial community composition in the bioreactors, including members of the Bacteroidetes, Acinetobacter (Gammaproteobacteria) and Clostridium (Firmicutes) that possess the capacity to reduce azo dyes. Collectively, the results indicate that the development of mixed bacterial communities from natural biomaterials contributes to an efficient and robust degradation performance in bioreactors even at high concentration of dyes.

• 出版日期2013-2