Biological Treatment of Perchlorate in Spent ISEP Ion-Exchange Brine

Hiremath, Tanushree; Roberts, Deborah J.; Lin, Xingguang; Clifford, Dennis; Gillogly, Thomas E.T.; Lehman, S. Geno

doi:10.1089/ees.2006.23.1009

Cited by 21 publications

(21 citation statements)

References 10 publications

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“…Some authors have also shown that if the salinity drops, acclimation to NaCl is rapidly lost [34]. In another case, specifically inoculum from marine sediment acclimatised to high salinities of 30 g NaCl L −1 , shock loads between 53 and 80 g NaCl L −1 were found not to impair reduction of either perchlorate or nitrate [6].…”

Section: Acclimatisation and Shockingmentioning

confidence: 99%

“…In cultures capable of reducing both nitrate and perchlorate, both anions are degraded simultaneously, though perchlorate reduction is inhibited to some extent by nitrate [6,37]. It is unclear from the various publications whether the inhibition mechanism is specifically enzymatic or organism competition.…”

Section: Reduction Mechanismmentioning

confidence: 99%

“…It is unclear from the various publications whether the inhibition mechanism is specifically enzymatic or organism competition. The influence of NaCl concentration also remains uncertain, with some research suggesting nitrate reduction is more impeded by increasing NaCl concentration than ClO 4 − reduction [6] and vice versa [2]. The nature of this interaction is dependent on community development, which in turn is sensitive to salinity and acclimation conditions.…”

Section: Reduction Mechanismmentioning

confidence: 99%

“…Highly concentrated nitrate wastes are produced from various industries including nuclear fuel processing, cellophane, pharmaceutical and fertiliser manufacture and metal finishing [3][4][5]. Both NO 3 − and ClO 4 − are readily soluble and bind poorly to soil, simplifying their transportation to ground and surface waters when discharged [3,6].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Biological treatment of ion-exchange brine regenerant for re-use: A review

McAdam

Judd

2008

Separation and Purification Technology

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Section: Acclimatisation and Shockingmentioning

confidence: 99%

Section: Reduction Mechanismmentioning

confidence: 99%

Section: Reduction Mechanismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Biological treatment of ion-exchange brine regenerant for re-use: A review

McAdam

Judd

2008

Separation and Purification Technology

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“…Even though some studies have demonstrated nitrateand perchlorate-reduction in a high salt environment, most cultures might be inapplicable for use in a practical system use due to the slow reduction rate of salt-tolerant bacteria (Logan et al 2001;Okeke et al 2002;Hiremath et al 2006). Until now, the only known salt-tolerant bacteria capable of reducing nitrate and perchlorate in a brine was Citrobacter sp., which was identified in 2002 (Okeke et al 2002).…”

Section: Identification Of Microbial Diversity Using Cloningmentioning

confidence: 99%

Characterization of a microbial community capable of reducing perchlorate and nitrate in high salinity

Chung

Shin

2009

Biotechnol Lett

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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.

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Biodestruction of blended residual oxidant streams

Brown¹,

Wheadon²,

Hansen³

2010

Journal AWWA

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After bench-and pilot-scale studies demonstrated the effectiveness of a novel biological treatment process for removing oxidants from concentrate waste streams, an electrodialysis reversal pilot plant was used to remove perchlorate, arsenic, and total dissolved solids from groundwater. The resulting concentrate stream was blended with scalped municipal wastewater and treated in a fixed-bed (FXB) bioreactor through a process called BIOBROx TM . The data showed that an empty bed contact time of 10 min and a 0.6 blend ratio of wastewater flow to total flow sustained perchlorate removal to below the methodreporting limit (4 µg/L) in the FXB bioreactor. Testing also showed that the system was robust with respect to process upsets and temperature variations. Ongoing full-scale testing is designed to optimize the process so that BIOBROx effluent can be used directly for reuse applications after disinfection.

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Biological Treatment of Perchlorate in Spent ISEP Ion-Exchange Brine

Cited by 21 publications

References 10 publications

Biological treatment of ion-exchange brine regenerant for re-use: A review

Biological treatment of ion-exchange brine regenerant for re-use: A review

Characterization of a microbial community capable of reducing perchlorate and nitrate in high salinity

Biodestruction of blended residual oxidant streams

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