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Engineering and kinetic aspects of bacterial uranium reduction for the remediation of uranium contaminated environments

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Engineering and kinetic aspects of bacterial uranium reduction for the remediation of uranium contaminated environments. / Lakaniemi, Aino-Maija; Douglas, Grant B.; Kaksonen, Anna H.

In: Journal of Hazardous Materials, Vol. 371, 05.06.2019, p. 198 - 212.

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Lakaniemi, Aino-Maija ; Douglas, Grant B. ; Kaksonen, Anna H. / Engineering and kinetic aspects of bacterial uranium reduction for the remediation of uranium contaminated environments. In: Journal of Hazardous Materials. 2019 ; Vol. 371. pp. 198 - 212.

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@article{820c79ae5d4145e6ba287da633be51a3,
title = "Engineering and kinetic aspects of bacterial uranium reduction for the remediation of uranium contaminated environments",
abstract = "Biological reduction of soluble uranium from U(VI) to insoluble U(IV) coupled to the oxidation of an electron donor (hydrogen or organic compounds) is a potentially cost-efficient way to reduce the U concentrations in contaminated waters to below regulatory limits. A variety of microorganisms originating from both U contaminated and non-contaminated environments have demonstrated U(VI) reduction capacity under anaerobic conditions. Bioreduction of U(VI) is considered especially promising for in situ remediation, where the activity of indigenous microorganisms is stimulated by supplying a suitable electron donor to the subsurface to contain U contamination to a specific location in a sparingly soluble form. Less studied microbial biofilm-based bioreactors and bioelectrochemical systems have also shown potential for efficient U(VI) reduction to remove U from contaminated water streams. This review compares the advantages and challenges of U(VI)-reducing in situ remediation processes, bioreactors and bioelectrochemical systems. In addition, the current knowledge of U(VI) bioreduction mechanisms and factors affecting U(VI) reduction kinetics (e.g. pH, temperature, and the chemical composition of the contaminated water) are discussed, as both of these aspects are important in designing efficient remediation processes.",
keywords = "Uranium, remediation, Bioreactor, Bioelectrochemical system, Biofilm, Reduction rate",
author = "Aino-Maija Lakaniemi and Douglas, {Grant B.} and Kaksonen, {Anna H.}",
note = "EXT={"}Kaksonen, Anna H.{"}",
year = "2019",
month = "6",
day = "5",
doi = "10.1016/j.jhazmat.2019.02.074",
language = "English",
volume = "371",
pages = "198 -- 212",
journal = "Journal of Hazardous Materials",
issn = "0304-3894",
publisher = "Elsevier",

}

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TY - JOUR

T1 - Engineering and kinetic aspects of bacterial uranium reduction for the remediation of uranium contaminated environments

AU - Lakaniemi, Aino-Maija

AU - Douglas, Grant B.

AU - Kaksonen, Anna H.

N1 - EXT="Kaksonen, Anna H."

PY - 2019/6/5

Y1 - 2019/6/5

N2 - Biological reduction of soluble uranium from U(VI) to insoluble U(IV) coupled to the oxidation of an electron donor (hydrogen or organic compounds) is a potentially cost-efficient way to reduce the U concentrations in contaminated waters to below regulatory limits. A variety of microorganisms originating from both U contaminated and non-contaminated environments have demonstrated U(VI) reduction capacity under anaerobic conditions. Bioreduction of U(VI) is considered especially promising for in situ remediation, where the activity of indigenous microorganisms is stimulated by supplying a suitable electron donor to the subsurface to contain U contamination to a specific location in a sparingly soluble form. Less studied microbial biofilm-based bioreactors and bioelectrochemical systems have also shown potential for efficient U(VI) reduction to remove U from contaminated water streams. This review compares the advantages and challenges of U(VI)-reducing in situ remediation processes, bioreactors and bioelectrochemical systems. In addition, the current knowledge of U(VI) bioreduction mechanisms and factors affecting U(VI) reduction kinetics (e.g. pH, temperature, and the chemical composition of the contaminated water) are discussed, as both of these aspects are important in designing efficient remediation processes.

AB - Biological reduction of soluble uranium from U(VI) to insoluble U(IV) coupled to the oxidation of an electron donor (hydrogen or organic compounds) is a potentially cost-efficient way to reduce the U concentrations in contaminated waters to below regulatory limits. A variety of microorganisms originating from both U contaminated and non-contaminated environments have demonstrated U(VI) reduction capacity under anaerobic conditions. Bioreduction of U(VI) is considered especially promising for in situ remediation, where the activity of indigenous microorganisms is stimulated by supplying a suitable electron donor to the subsurface to contain U contamination to a specific location in a sparingly soluble form. Less studied microbial biofilm-based bioreactors and bioelectrochemical systems have also shown potential for efficient U(VI) reduction to remove U from contaminated water streams. This review compares the advantages and challenges of U(VI)-reducing in situ remediation processes, bioreactors and bioelectrochemical systems. In addition, the current knowledge of U(VI) bioreduction mechanisms and factors affecting U(VI) reduction kinetics (e.g. pH, temperature, and the chemical composition of the contaminated water) are discussed, as both of these aspects are important in designing efficient remediation processes.

KW - Uranium

KW - remediation

KW - Bioreactor

KW - Bioelectrochemical system

KW - Biofilm

KW - Reduction rate

U2 - 10.1016/j.jhazmat.2019.02.074

DO - 10.1016/j.jhazmat.2019.02.074

M3 - Article

VL - 371

SP - 198

EP - 212

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

SN - 0304-3894

ER -