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In situ chemical reduction (ISCR) technologies: significance of low Eh reactions

Lookup NU author(s): Dr Jan Dolfing

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Abstract

Zero valent iron (ZVI; Fe(0)) has been successfully employed for the transformation and subsequent detoxification of a wide range of environmental contaminants, including chlorinated organics, heavy metals, nitroaromatics and, to some degree, perchlorate. The combined use of ZVI plus controlled release carbon has been shown to generate environmental conditions defined herein as in situ chemical reduction (ISCR) that facilitate the microbiological, chemical and/or physical destruction of various contaminants. In this context, the salient features of ISCR are: (i) its low redox potential; and (ii) its propensity to produce H2. In this paper we discuss the thermodynamics of these characteristics (with special emphasis on ZVI reactions) and provide representative case studies documenting the safe and effective use of ISCR technology to rapidly remove halogenated organics from impacted subsurface environments. Copyright © Taylor & Francis Group, LLC.


Publication metadata

Author(s): Dolfing J, Van Eekert M, Seech A, Vogan J, Mueller J

Publication type: Article

Publication status: Published

Journal: Soil & Sediment Contamination

Year: 2008

Volume: 17

Issue: 1

Pages: 63-74

Print publication date: 01/01/2008

ISSN (print): 1532-0383

ISSN (electronic): 1549-7887

URL: http://dx.doi.org/10.1080/15320380701741438

DOI: 10.1080/15320380701741438


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