Dechlorination of PCE by mixtures of green rust and zero-valent iron /
Chlorinated compounds are toxic environmental contaminants that have been used for industrial and agricultural purposes. Research has been conducted on abiotic dechlorination of tetrachloroethylene (PCE) by sulfate green rust (GR[S]₀₄) and zero-valent iron (ZVI), individually and together, in order...
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| Format: | Thesis eBook |
| Language: | English |
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[Place of publication not identified] :
[publisher not identified] ;
2002.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | Chlorinated compounds are toxic environmental contaminants that have been used for industrial and agricultural purposes. Research has been conducted on abiotic dechlorination of tetrachloroethylene (PCE) by sulfate green rust (GR[S]₀₄) and zero-valent iron (ZVI), individually and together, in order to provide knowledge for the development of effective and cost-efficient remedial technologies. Reductive dechlorination of PCE by these reductants has been assessed under various environmental conditions such as pH (8, 9, and 10), ZVI pretreatment, and preparation method of the mixtures (GR[S]₀₄ synthesized in the presence of ZVI; GR[S]₀₄ and ZVI mixed after preparation). For all the experimental conditions evaluated, the activities of these reductants are much higher at pH 10 than at pH 8 or pH 9. Also, the kinetics are very often similar at pH 8 and pH 9. Combining GR[S]₀₄ and ZVI resulted in a faster degradation of PCE than by GR[S]₀₄ alone or ZVI alone. An interaction between these two reductants has been identified, implying a possible regeneration of GR[S]₀₄ by ZVI. This interaction could result in an improved process for reductive dehalogenation. |
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| Item Description: | "Major subject: Civil Engineering". Vita. |
| Physical Description: | x, 74 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references (leaves 55-56). |