title: Biodecolorization of Naphthol Green B dye by Shewanella oneidensis MR-1 under anaerobic conditions.
abstract: The anaerobic decolorization of metal-complex dye Naphthol Green B (NGB) by a metal-reducing bacterium, Shewanella oneidensis MR-1, was investigated. S. oneidensis MR-1 showed a high capacity for decolorizing NGB even at a concentration of up to 1000mg/L under anaerobic conditions. Maximum decolorization efficiency was appeared at pH 8.0 and 40°C. Addition of iron oxide caused no inhibition to the NGB decolorization, while the presence of ferric citrate, nitrite, or nitrate almost completely terminated the decolorization. Biosynthesis of nanomaterials was observed coupled with the degradation of NGB when thiosulfate was added. The Mtr respiratory pathway was found to be responsible for the decolorization of NGB by S. oneidensis, in which extracellular electron shuttle also plays a positive role in promoting the decolorization.
authors.affiliation: School of Environment, Jiangsu University, Zhenjiang 212013, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Xiao
authors.forename: Can-Can
authors.initials: CC
authors.lastname: Xu
authors.forename: Yong-Min
authors.initials: YM
authors.lastname: Wu
authors.forename: Pei-Jie
authors.initials: PJ
authors.lastname: Cai
authors.forename: Wen-Wei
authors.initials: WW
authors.lastname: Li
authors.forename: Dao-Lin
authors.initials: DL
authors.lastname: Du
authors.forename: Han-Qing
authors.initials: HQ
authors.lastname: Yu
mesh_terms: D000693:Anaerobiosis; D003116:Color; D006863:Hydrogen-Ion Concentration; D009284:Naphthols / Q000378:metabolism*; D020592:Shewanella / Q000378:metabolism*; D013696:Temperature
chemical_list: D009284:Naphthols