Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 19, Issue 6, Pages 1994-2006Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-012-0764-9
Keywords
Chlorinated ethanes and ethenes; Reductive dechlorination; Abiotic degradation; DNAPL
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Funding
- Foundation for Polish Science from the MISTRZ programme
- Human Capital Programme [POKL.04.01.01-00-368/09]
- Polish Ministry of Science and Higher Education [NN523562838]
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Chlorinated ethanes and ethenes are among the most frequently detected organic pollutants of water. Their physicochemical properties are such that they can contaminate aquifers for decades. In favourable conditions, they can undergo degradation. In anaerobic conditions, chlorinated solvents can undergo reductive dechlorination. Abiotic dechlorination is usually slower than microbial but abiotic dechlorination is usually complete. In favourable conditions, abiotic reactions bring significant contribution to natural attenuation processes. Abiotic agents that may enhance the reductive dechlorination of chlorinated ethanes and ethenes are zero-valent metals, sulphide minerals or green rusts. At some sites, permanganate and Fenton's reagent can be used as remediation tool for oxidation of chlorinated ethanes and ethenes. Nanoscale iron or bimetallic particles, due to high efficiency in degradation of chlorinated ethanes and ethenes, have gained much interest. They allow for rapid degradation of chlorinated ethanes and ethenes in water phase, but they also give benefit of treating dense non-aqueous phase liquid.
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