Combination of nanoscale-zero-valent iron and organic sub-strate stimulation for efficient remediation of co-mingled plume contaminated with Cr(VI) and chlorinated solvents

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F16%3A00003945" target="_blank" >RIV/46747885:24220/16:00003945 - isvavai.cz</a>

Alternative codes found

RIV/46747885:24620/16:00003945

Result on the web

<a href="http://dx.doi.org/10.1016/j.nbt.2016.06.747" target="_blank" >http://dx.doi.org/10.1016/j.nbt.2016.06.747</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nbt.2016.06.747" target="_blank" >10.1016/j.nbt.2016.06.747</a>

Result language

angličtina

Original language name

Combination of nanoscale-zero-valent iron and organic sub-strate stimulation for efficient remediation of co-mingled plume contaminated with Cr(VI) and chlorinated solvents

Original language description

Chromium and chlorinated ethenes represent typical toxic pollutants that cause pollution of groundwater and soil due to their frequent industrial application. The present work reports results of 1-year pilot-remediation in-situ study dealing with a co-mingled plume containing the above-mentioned pollutants. The successful decontamination was achieved by the sequential use of nanoscale zerovalent iron (nZVI) particles and in situ biotic reduction supported by whey injection. The results revealed that nZVI was efficient toward Cr(VI) by itself and completely removed it from the groundwater (99%) and the subsequent application of whey resulted in a high removal of chlorinated ethenes (97–99%). The persistence of the reducing conditions after the depletion of the organic substrates indicated complementarity between nZVI and the whey phases. The subsequent application of whey phase assisted the microbial regeneration of the spent nZVI by promoting its reduction into Fe(II), which further supported remediation conditions at the site. Illumina sequencing and the detection of functional genes documented a development in the reducing microbes (iron-reducing, sulfate-reducing and chlororespiring bacteria) that benefited under the conditions of the site and that was probably responsible for the high dechlorination and/or Cr(VI) reduction. The results of this study demonstrate the feasibility and high efficiency of the combined nano-biotechnological approach for the removal of Cr(VI) and chlorinated ethenes from the groundwater.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

DK - Contamination and decontamination of soil including pesticides

OECD FORD branch

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Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

New Biotechnology, Supplement, Volume 33

ISBN

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ISSN

1871-6784

e-ISSN

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Number of pages

2

Pages from-to

""

Publisher name

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Place of publication

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Event location

Krakow

Event date

Jan 1, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000393400600018