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http://dx.doi.org/10.4014/jmb.0806.399

Redundancy Analysis Demonstration of the Relevance of Temperature to Ammonia-Oxidizing Bacterial Community Compositions in a Full-Scale Nitrifying Bioreactor Treating Saline Wastewater  

Park, Hee-Deung (Department of Civil, Environmental, and Architectural Engineering, Korea University)
Lee, Seung-Yong (School of Environmental Science and Engineering, POSTECH)
Hwang, Seok-Hwan (School of Environmental Science and Engineering, POSTECH)
Publication Information
Journal of Microbiology and Biotechnology / v.19, no.4, 2009 , pp. 346-350 More about this Journal
Abstract
Although salt is known to influence the performance of nitrification significantly, it has not been well reported on how salt affects ammonia-oxidizing bacterial(AOB) community compositions and dynamics in wastewater treatment bioreactors. In this study, these questions were evaluated in a full-scale bioreactor treating saline wastewater. Clone library analysis for the ammonia monooxygenase subunit A gene revealed that AOB belonging to the Nitrosomonas europaea and the N. oligotropha lineages inhabited in the bioreactor. Terminal restriction fragment length polymorphism analysis for monthly samples demonstrated a fluctuation pattern among AOB populations, although AOB within the N. europaea lineage were dominant during the test period. Correlation analysis between patterns of terminal restriction fragments and environmental variables suggested that sodium, chloride, and sulfate were less important; rather, temperature was the most significant factor affecting the AOB community in the bioreactor.
Keywords
Nitrification; ammonia-oxidizing bacteria; terminal restriction fragment length polymorphism; wastewater treatment; salt inhibition;
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