title: Population dynamics in bioaugmented membrane bioreactor for treatment of bromoamine acid wastewater.
abstract: The performances and microbial population changes in laboratory-scale membrane bioreactor (MBR) augmented with Sphingomonas xenophaga QYY were investigated in the present study. It was demonstrated that after 30 days acclimation, the non-augmented MBR system were able to degrade bromoamine acid (BAA) well. However, the efficiency of the system decreased with BAA concentration increasing. While the augmented MBR showed higher capability, in which the color and COD removal were more than 90% and 50%, respectively. By ribosomal intergenic spacer analysis (RISA), it was found that BAA-utilizing populations gradually increased to become the dominant species in the non-augmented MBR. However, the augmented MBR possessed relatively stable treatment abilities, in which the introduced strain QYY could be persistent and co-exist well with the indigenous populations.
authors.affiliation: Key Laboratory of Industrial Ecology and Environmental Engineering, MOE, School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian, PR China. yuanyuanqu@yahoo.cn
authors.forename: Yuan-Yuan
authors.initials: YY
authors.lastname: Qu
authors.forename: Ji-Ti
authors.initials: JT
authors.lastname: Zhou
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Lin-Lin
authors.initials: LL
authors.lastname: Xing
authors.forename: Nan
authors.initials: N
authors.lastname: Jiang
authors.forename: Min
authors.initials: M
authors.lastname: Gou
authors.forename: M
authors.initials: M
authors.lastname: Salah Uddin
mesh_terms: D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000382:microbiology*; D002452:Cell Count; D003198:Computer Simulation; D007220:Industrial Waste / Q000517:prevention & control*; D008567:Membranes, Artificial; D008954:Models, Biological; D013045:Species Specificity; D020578:Sphingomonas / Q000145:classification / Q000254:growth & development / Q000302:isolation & purification* / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*
chemical_list: D007220:Industrial Waste; D008567:Membranes, Artificial