7. Redox Processes

  1. Ian J. Tinsley

Published Online: 2 JUN 2004

DOI: 10.1002/047166717X.ch7

Chemical Concepts in Pollutant Behavior

Chemical Concepts in Pollutant Behavior

How to Cite

Tinsley, I. J. (2004) Redox Processes, in Chemical Concepts in Pollutant Behavior, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/047166717X.ch7

Author Information

  1. Oregon State University, USA

Publication History

  1. Published Online: 2 JUN 2004
  2. Published Print: 1 JUN 2004

ISBN Information

Print ISBN: 9780471095255

Online ISBN: 9780471667179

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Keywords:

  • reduction potentials;
  • alkyl halides;
  • chlorinated dioxins;
  • reduction reactions;
  • dissolved organic matter;
  • electron carriers;
  • zero-valent metal reduction;
  • ground water remediation

Summary

Under environmental conditions, oxidative reactions are mediated either by enzymes or photo-induced active oxidants. On the other hand anaerobic conditions exist that may produce reductions. Thermodynamic analysis shows that reduction potentials that can occur in natural waters are sufficient to reduce halogenated compounds. Hydrogenolysis and dihalo-elimination reactions may result. The rate of these reactions can be enhanced by dissolved organic matter, components of which appear to serve as electron carriers. Zero valent metals, in particular, metallic iron are effective in reducing halogenated aliphatic compounds and the use of this reaction in remediation processes is discussed.