Adventus Americas Inc.

Thermodynamics of Low Eh Reactions

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Courtesy of Adventus Americas Inc.

Battelle’s Fifth International Conference on Remediation of Chlorinated and Recalcitrant Compounds.

ABSTRACT: Zero valent iron (Fe(0)) has been successfully employed for the transformation of a wide range of contaminants, including chlorinated organics, heavy metals, nitroaromatics, and to some degree perchlorate.The combined use of Fe(O) and controlled release carbon has been described to generate environmental conditions that facilitate the in situ chemical reduction (ISCR) of various contaminants (Seech, 1995). The salient characteristics of ISCR in this context are its low redox potential and its propensity to produce H2. Here we present and discuss the thermodynamics of these characteristics, with special emphasis on Fe(O) and the treatment of halogenated organics using ISCR technologies.

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