Abstract
Denitrifying up-flow packed-bed bioreactors fed with perchlorate and nitrate allowed for the examination of the impact of a variety of salt conditions (up to 10% w/v NaCl) on the complete perchlorate and nitrate removal capacity of the reactor using activated sludge taken from a municipal wastewater treatment plant. Based on the evaluation of the microbial community in the bioreactor by cloning analysis, Clostridium sp. and a Rhodocyclaceae bacteria were identified as the dominant clones. This suggests that they may be tolerant to high salt and can reduce both nitrate and perchlorate in such conditions.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Bacteria / classification*
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Bacteria / isolation & purification
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Bacteria / metabolism*
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Bioreactors / microbiology*
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Clostridium / classification
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Clostridium / isolation & purification
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Clostridium / metabolism
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DNA, Bacterial / chemistry
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DNA, Bacterial / genetics
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DNA, Ribosomal / chemistry
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DNA, Ribosomal / genetics
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Nitrates / metabolism*
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Perchlorates / metabolism*
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Phylogeny
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RNA, Ribosomal, 16S / genetics
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Rhodocyclaceae / classification
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Rhodocyclaceae / isolation & purification
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Rhodocyclaceae / metabolism
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Salinity
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Sequence Analysis, DNA
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Sewage / microbiology
Substances
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DNA, Bacterial
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DNA, Ribosomal
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Nitrates
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Perchlorates
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RNA, Ribosomal, 16S
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Sewage
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perchlorate