NDLI: Biocatalytic perchlorate reduction: kinetics and effects of groundwater characteristics

Please wait, while we are loading the content...

Differences in microbial communities and performance between suspended and attached growth anaerobic membrane bioreactors treating synthetic municipal wastewater

Lead removal from solution by a porous ceramisite made from bentonite, metallic iron, and activated carbon

Enhanced disinfection by-product formation due to nanoparticles in wastewater treatment plant effluents

Ion exchange-precipitation for nutrient recovery from dilute wastewater

Arsenic removal using a sulfonated poly(ether ether ketone) coated hollow fiber nanofiltration membrane

Rejection of trace organic chemicals by a nanofiltration membrane: the role of molecular properties and effects of caustic cleaning

Modeling low impact development in two Chicago communities

Reducing nitrogen crossover in microbial reverse-electrodialysis cells by using adjacent anion exchange membranes and anion exchange resin

Antibacterial behavior of halloysite nanotubes decorated with copper nanoparticles in a novel mixed matrix membrane for water purification

Microbial composition of purified waters and implications for regrowth control in municipal water systems

Nanostructured polyaniline incorporated ultrafiltration membrane for desalination of brackish water

Transformation of atrazine, bisphenol A and chlorendic acid by electrochemically produced oxidants using a lead dioxide electrode

Biocatalytic perchlorate reduction: kinetics and effects of groundwater characteristics

Back cover

Environmental Science: Water Research & Technology Vol - 1 Issue - 5

Environmental Science: Water Research & Technology Vol - 1 Issue - 4

Environmental Science: Water Research & Technology Vol - 1 Issue - 3

Environmental Science: Water Research & Technology Vol - 1 Issue - 2

Environmental Science: Water Research & Technology Vol - 1 Issue - 1

Biocatalytic perchlorate reduction: kinetics and effects of groundwater characteristics

Content Provider	Royal Society of Chemistry (RSC)
Author	Zilles, Julie L. Hutchison, Justin M.
Copyright Year	2015
Abstract	Biocatalytic reduction of perchlorate can minimize the effects of competitive electron acceptors and completely reduce perchlorate into chloride and oxygen, but to date has only been demonstrated under idealized laboratory conditions. This work investigated biocatalytic perchlorate reduction in two groundwater drinking water sources, under a range of conditions and with a variety of electron donors. The biocatalysts, perchlorate reductase and chlorite dismutase from Azospira oryzae, had a maximum activity of 162.5 ± 8.4 U (μg Mo)−1 in buffered solution and retained 82–94% of their activity in groundwater samples. The half saturation concentration for perchlorate was 92.0 μM. Perchlorate reduction rates were higher than nitrate reduction rates, with nitrate as the sole electron acceptor having reduction rates 7.5 to 9.7% of the maximum perchlorate reduction rates in groundwater. Activity was consistent from pH 6.5 to 9.0. The temperature dependence of biocatalytic perchlorate reduction was well defined by the Arrhenius equation. No significant difference in biocatalytic activity was observed with calcium and magnesium concentrations over the tested range of 0 to 400 mg L−1 or with natural organic matter up to 6 mg L−1. Ascorbic acid with addition of an electron shuttle resulted in reduction of more than 99% of perchlorate in less than 6 hours, an order of magnitude loss in activity compared to methyl viologen. These results suggest the potential of the biocatalysts for treating perchlorate over a range of concentrations and conditions representative of industrial and groundwater perchlorate contamination.
Starting Page	913
Ending Page	921
Page Count	9
File Format	HTM / HTML PDF
ISSN	20531400
Volume Number	1
Issue Number	6
Journal	Environmental Science: Water Research & Technology
DOI	10.1039/c5ew00176e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Arrhenius Azospira Perchlorate Chloride Oxygen Groundwater Chlorite dismutase Buffer solution Nitrate Oxidizing agent PH Arrhenius equation Calcium Magnesium Acid Paraquat
Content Type	Text
Resource Type	Article
Subject	Environmental Engineering Water Science and Technology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Physiology and Biotechnological Applications of Microbial (Per)chlorate Reduction

Kinetics of chlorite dismutase in a perchlorate degrading reactor sludge

A novel perchlorate- and nitrate-reducing bacterium, Azospira sp. PMJ

Bioelectrical redox cycling of anthraquinone-2,6-disulfonate coupled to perchlorate reduction

Characterizing Isozymes of Chlorite Dismutase for Water Treatment

Cloning, expression, purification, crystallization and preliminary X-ray diffraction analysis of chlorite dismutase: a detoxifying enzyme producing molecular oxygen.

Preferential Use of the Perchlorate over the Nitrate in the Respiratory Processes Mediated by the Bacterium Azospira sp. OGA24

Methane oxidation linked to chlorite dismutation.

Functional Redundancy in Perchlorate and Nitrate Electron Transport Chains and Rewiring Respiratory Pathways to Alter Terminal Electron Acceptor Preference

Biocatalytic perchlorate reduction: kinetics and effects of groundwater characteristics

Similar Documents

Physiology and Biotechnological Applications of Microbial (Per)chlorate Reduction

Kinetics of chlorite dismutase in a perchlorate degrading reactor sludge

A novel perchlorate- and nitrate-reducing bacterium, Azospira sp. PMJ

Bioelectrical redox cycling of anthraquinone-2,6-disulfonate coupled to perchlorate reduction

Characterizing Isozymes of Chlorite Dismutase for Water Treatment

Cloning, expression, purification, crystallization and preliminary X-ray diffraction analysis of chlorite dismutase: a detoxifying enzyme producing molecular oxygen.

Preferential Use of the Perchlorate over the Nitrate in the Respiratory Processes Mediated by the Bacterium Azospira sp. OGA24

Methane oxidation linked to chlorite dismutation.

Functional Redundancy in Perchlorate and Nitrate Electron Transport Chains and Rewiring Respiratory Pathways to Alter Terminal Electron Acceptor Preference

Biocatalytic perchlorate reduction: kinetics and effects of groundwater characteristics