Study of 4-t-octylphenol degradation and microbial communityin granular sludge
LIU Yi , WANG Feng , XIA Siqing , ZHAO Jianfu
DOI:
Received April 06, 2007,Revised July 13, 2007, Accepted , Available online
Volume 20,2008,Pages 167-171
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In this study, the authors have investigated the e ects of various factors on both aerobic and anaerobic degradation of 4-t-octylphenol
(4-t-OP) in granular sludge. In comparison, the aerobic degradation rate was much higher than that of anaerobic degradation. The
optimal pH values for 4-t-OP degradation in granular sludge were 9 and 7 under aerobic and anaerobic conditions, respectively. And
the degradation rate decreased with an increase in the initial 4-t-OP concentration. Addition of yeast extract or homologous compounds
such as phenol also enhanced the 4-t-OP degradation, especially under the aerobic condition. To investigate the bacterial community in
this study, the denaturing gradient gel electrophoresis (DGGE) method was applied, based on the primers, for the 16S rDNA V3 region
of bacteria.
-proteobacteria and bacillus were identified as the major species of sludge.
