Title

Dehalogenation Studies Of Different Types And Forms Of Zero Valent Iron

Abstract

Rate constants for trichloroethylene (TCE) degradation by iron particles were determined by monitoring TCE concentration of and its breakdown products. First order rate constants were obtained for the reactions and normalized by mass, aqueous phase volume, and iron surface area. The iron samples with a very high surface area contained a lower percentage of reactive sites. Although the nanoscale iron was the most reactive per gram, the peerless iron has the greatest concentration of reactive sites. Scanning electron microscopy studies showed a build-up of corrosion products on the iron surface that might be responsible for a decrease in degradation rates over time. The formation of surface species due to the presence of TCE and calcium carbonate had an adverse affect on iron reactivity. These precipitates were successfully removed by acid washing and ultrasound treatment, thus restoring initial reaction rates. This is an abstract of a paper presented at the 223rd ACS National Meeting (Orlando, FL 4/7-11/2002).

Publication Date

12-1-2002

Publication Title

ACS Division of Environmental Chemistry, Preprints

Volume

42

Issue

1

Number of Pages

58-61

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

23844439282 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/23844439282

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