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Correlation of reactor performance and bacterial community composition during the removal of trimethylamine in three-stage biofilters

Paper ID Volume ID Publish Year Pages File Format Full-Text
4574 232 2008 11 PDF Available
Title
Correlation of reactor performance and bacterial community composition during the removal of trimethylamine in three-stage biofilters
Abstract

Two three-stage biofilters packed with compost (BFC) or sludge (BFS), respectively, were prepared for removing trimethylamine (TMA) from waste gases. The correlation between reactor performance and bacterial community composition was investigated. Although TMA could be successfully removed by both biofilters, TMA removal efficiency in the bottom stage of the BFC was considerably higher than that of the BFS. Moreover, NH3 generated by the degradation of TMA could be removed in the BFC, while it accumulated in the BFS. Spatial and temporal shifts of bacterial community composition in both biofilters developed differently as assessed by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) followed by clone library analysis. Results showed that the lack of ammonia-oxidizing bacteria (AOB) may have contributed to the accumulation of NH3 in the BFS. Therefore, AOB may play a decisive role in a complete degradation of TMA. It is necessary for the sludge packing material to be inoculated with AOB in order to initiate ammonia oxidation in the bioreactor. Understanding of microbial community compositions in biofilters plays an important role in seeking biological limiting factors related to the removal efficiencies of TMA and other compounds from waste gas and further enhancing the performance of biofilters.

Keywords
Biofiltration; Trimethylamine; Three-stage biofilters; PCR-DGGE; Bacterial community composition
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Correlation of reactor performance and bacterial community composition during the removal of trimethylamine in three-stage biofilters
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 38, Issue 2, 15 February 2008, Pages 248–258
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us