Reduction of perchlorate by an anaerobic enrichment culture

Attaway, Hubert H.; Smith, Mark D.

doi:10.1007/bf01569673

Cited by 105 publications

(64 citation statements)

References 12 publications

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“…NO3 -can cause methemoglobinemia 1,2 in infants SO4 2-on ClO4 -microbial reduction [27][28] . Thus, more research addressing these critical 114 ecologic interactions is needed.…”

mentioning

confidence: 99%

Pyrosequencing Analysis Yields Comprehensive Assessment of Microbial Communities in Pilot-Scale Two-Stage Membrane Biofilm Reactors

Ontiveros‐Valencia

Tang

Zhao

et al. 2014

Environ. Sci. Technol.

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24We studied the microbial community structure of pilot two-stage Membrane Biofilm 25Reactors (MBfRs) designed to reduce nitrate (NO3 -) and perchlorate (ClO4 -) in 26 contaminated groundwater. The groundwater also contained oxygen (O2) and sulfate 27(SO4 2-), which became important electron sinks that affected the NO3 -and ClO4 -removal 28 rates. Using pyrosequencing, we elucidated how important phylotypes of each "primary"

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“…NO3 -can cause methemoglobinemia 1,2 in infants SO4 2-on ClO4 -microbial reduction [27][28] . Thus, more research addressing these critical 114 ecologic interactions is needed.…”

mentioning

confidence: 99%

Pyrosequencing Analysis Yields Comprehensive Assessment of Microbial Communities in Pilot-Scale Two-Stage Membrane Biofilm Reactors

Ontiveros‐Valencia

Tang

Zhao

et al. 2014

Environ. Sci. Technol.

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“…Although perchlorate is persistent in the environment, studies have proven microorganisms can reduce perchlorate, an electron acceptor, to innocuous chloride and oxygen under anaerobic conditions (5,8,12,16,18,21,22,26,27,36,38,40). A widely accepted perchlorate-reducing pathway (26) All previously isolated perchlorate-reducing bacteria belong to Proteobacteria (8,12,18,21,26,27,36,37,40).…”

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confidence: 99%

Reduction of Perchlorate and Nitrate by Microbial Communities in Vadose Soil

Nozawa-Inoue

Scow

Rolston

2005

Appl Environ Microbiol

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Perchlorate contamination is a concern because of the increasing frequency of its detection in soils and groundwater and its presumed inhibitory effect on human thyroid hormone production. Although significant perchlorate contamination occurs in the vadose (unsaturated) zone, little is known about perchlorate biodegradation potential by indigenous microorganisms in these soils. We measured the effects of electron donor (acetate and hydrogen) and nitrate addition on perchlorate reduction rates and microbial community composition in microcosm incubations of vadose soil. Acetate and hydrogen addition enhanced perchlorate reduction, and a longer lag period was observed for hydrogen (41 days) than for acetate (14 days). Initially, nitrate suppressed perchlorate reduction, but once perchlorate started to be degraded, the process was stimulated by nitrate. Changes in the bacterial community composition were observed in microcosms enriched with perchlorate and either acetate or hydrogen. Denaturing gradient gel electrophoresis analysis and partial sequencing of 16S rRNA genes recovered from these microcosms indicated that formerly reported perchloratereducing bacteria were present in the soil and that microbial community compositions were different between acetate-and hydrogen-amended microcosms. These results indicate that there is potential for perchlorate bioremediation by native microbial communities in vadose soil.

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“…The purpose of this study was therefore to obtain, for the first time, growth rates of perchlorate-respiring bacteria using different electron acceptors. Such data will be useful for analyzing and designing biological treatment systems for treating perchlorate-contaminated water containing dissolved oxygen and other alternate electron acceptors (3,16,18,41).…”

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confidence: 99%

Kinetics of Perchlorate- and Chlorate-Respiring Bacteria

Logan

Zhang

Mulvaney

et al. 2001

Appl Environ Microbiol

135

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Ten chlorate-respiring bacteria were isolated from wastewater and a perchlorate-degrading bioreactor. Eight of the isolates were able to degrade perchlorate, and all isolates used oxygen and chlorate as terminal electron acceptors. The growth kinetics of two perchlorate-degrading isolates, designated "Dechlorosoma" sp. strains KJ and PDX, were examined with acetate as the electron donor in batch tests. The maximum observed aerobic growth rates of KJ and PDX (0.27 and 0.28 h ؊1 , respectively) were only slightly higher than the anoxic growth rates obtained by these isolates during growth with chlorate (0.26 and 0.21 h ؊1 , respectively).

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Reduction of perchlorate by an anaerobic enrichment culture

Cited by 105 publications

References 12 publications

Pyrosequencing Analysis Yields Comprehensive Assessment of Microbial Communities in Pilot-Scale Two-Stage Membrane Biofilm Reactors

Pyrosequencing Analysis Yields Comprehensive Assessment of Microbial Communities in Pilot-Scale Two-Stage Membrane Biofilm Reactors

Reduction of Perchlorate and Nitrate by Microbial Communities in Vadose Soil

Kinetics of Perchlorate- and Chlorate-Respiring Bacteria

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