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Reductive dechlorination of carbon tetrachloride by zero-valent iron and related iron corrosion

Paper ID Volume ID Publish Year Pages File Format Full-Text
47756 46481 2009 7 PDF Available
Title
Reductive dechlorination of carbon tetrachloride by zero-valent iron and related iron corrosion
Abstract

Electrochemical corrosion behavior of iron in aqueous solutions with and without carbon tetrachloride (CT) was investigated in a wide pH range from 0.4 to 14 using steady-state polarization curves and electrochemical impedance spectroscopy (EIS). It was found that the presence of CT significantly accelerated the hydrogen evolution reaction (HER) on the iron surface in strong acidic solutions, causing severe corrosion of iron; in return, the iron corrosion was helpful for the reductive dechlorination of CT. The inherent relationship between the dechlorination of CT and the corrosion of iron is attributed to the fact that the adsorbed hydrogen atoms produced during the iron corrosion process are necessary for the dechlorination process of CT. As a result, the removal efficiency of CT is strongly dependent on the extent of iron corrosion in aqueous solutions at different pH values.

Keywords
Dechlorination; Carbon tetrachloride (CT); Adsorbed hydrogen; Iron; Corrosion; Hydrogen evolution
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Reductive dechlorination of carbon tetrachloride by zero-valent iron and related iron corrosion
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 91, Issues 1–2, 7 September 2009, Pages 434–440
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us