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Indexed by:期刊论文

Date of Publication:2009-01-01

Journal:BIORESOURCE TECHNOLOGY

Included Journals:SCIE、PubMed

Volume:100

Issue:1

Page Number:244-248

ISSN No.:0960-8524

Key Words:Membrane bioreactor; Bioaugmentation; Bromoamine acid; Ribosomal intergenic spacer

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. (C) 2008 Elsevier Ltd. All rights reserved.