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An acetic-acid type climax community and its changes aroused by COD/SO 4 2- ratio in an acidogenic sulfate-reducing reactor

  • Hongxu Bao*
  • , Xiping Ma
  • , Jian Wang
  • , Kui Jing
  • , Zhihui Chen
  • , Aijie Wang
  • *Corresponding author for this work
  • Liaoning University
  • Key Lab of Pollution Control and Environmental Remediation of Liaoning Province

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The objective of this study is to investigate the microbial community and its characteristics changes aroused by the ratios of COD/SO 4 2- in the acidogenic-phase reactor of twophase anaerobic process. A continuous-flow lab-scale test was conducted in an acidogenic sulfatereducing reactor with molasses wastewater as sole organic carbon source and sodium sulfate as the electron acceptor. The experimental results showed that Acetic-acid Type Microbial Metabolism resulted in the formation of An Acetic-acid Type Climax Community. The change of the COD/SO 4 2- ratio caused an ecological succession from a stable climax community at moderate and high COD/SO 4 2- ratios to a sub-stable climax community at a lower COD/SO 4 2- ratio. But Aceticacid Type Microbial Metabolism kept unchanged during this course, which indicated the stability of Acetic-acid Type Climax Community. The Acetic-acid Type Microbial Metabolism and Acetic-acid Type Climax Community were of typical characteristics in the acidogenic sulfate-reducing reactor.

Original languageEnglish
Title of host publicationMechanical Engineering and Materials Science
Pages217-223
Number of pages7
DOIs
StatePublished - 2012
Event2011 International Conference on Mechanical Engineering and Materials Science, ICMEMS 2011 - Cheju Island, Korea, Republic of
Duration: 24 Sep 201125 Sep 2011

Publication series

NameApplied Mechanics and Materials
Volume108
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2011 International Conference on Mechanical Engineering and Materials Science, ICMEMS 2011
Country/TerritoryKorea, Republic of
CityCheju Island
Period24/09/1125/09/11

Keywords

  • Acetic-acid type climax community
  • Acetic-acid type microbial metabolism
  • COD/SO ratio
  • Ecological succession
  • Sulfate-reducing bacteria (srb)

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