title: Decolorization of reactive dark blue K-R by the synergism of fungus and bacterium using response surface methodology.
abstract: The objective of this study was to investigate the potential ability of decolorizing Reactive Dark Blue K-R by the synergism of fungal strain Penicillium sp. QQ and bacterial strain Exiguobacterium sp. TL. The optimal conditions for decolorization determined by response surface methodology (RSM) were as follows: 12.5% (w/v) of both strains QQ and TL, 0.19% (w/v) of glucose, 0.09% (w/v) of yeast extract, pH7.0, 37 degrees C and 200mg/L of initial dye concentration. It was shown that about 97% of 200mg/L K-R could be decolorized within 24h under these conditions. Besides, strains QQ and TL co-cultures could decolorize 10 kinds of azo dyes effectively and be still 60% color removal when salinity increased to 15%. And most of the tested metal ions showed little influence on the decolorization except for Ni(2+). The results demonstrated that strains QQ and TL co-cultures could be useful for the practical bioremediation.
authors.affiliation: Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Qu
authors.forename: Shengnan
authors.initials: S
authors.lastname: Shi
authors.forename: Fang
authors.initials: F
authors.lastname: Ma
authors.forename: Bin
authors.initials: B
authors.lastname: Yan
mesh_terms: D000704:Analysis of Variance; D001391:Azo Compounds / Q000378:metabolism; D001419:Bacteria / Q000187:drug effects / Q000378:metabolism*; D001673:Biodegradation, Environmental / Q000187:drug effects; D001709:Biotechnology / Q000379:methods*; D018920:Coculture Techniques; D003116:Color; D004396:Coloring Agents / Q000378:metabolism*; D003470:Culture Media; D007700:Kinetics; D008670:Metals / Q000494:pharmacology; D010407:Penicillium / Q000187:drug effects / Q000378:metabolism*; D054712:Salinity; D012965:Sodium Chloride / Q000494:pharmacology
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D003470:Culture Media; D008670:Metals; D012965:Sodium Chloride