NDLI: Trimetallic Pd/Fe/Al particles for catalytic dechlorination of chlorinated organic contaminants.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Huang, Chang-Chieh Lien, Hsing-Lung
Description	Country affiliation: Taiwan Author Affiliation: Huang CC ( Department of Civil and Environmental Engineering, National University of Kaohsiung, Taiwan. d97541002@ntu.edu.tw)
Abstract	Zero-valent aluminum based trimetallic particles comprising a combination of catalytically effective amounts (1 wt%) of palladium and zero-valent iron on the aluminum surface were synthesized and tested for the dechlorination of chlorinated methanes in batch reactors. XRD analysis indicated the trimetallic particles present in zero-valent form of all three components. Trimetallic Pd/Fe/Al particles showed a very rapid degradation of carbon tetrachloride leading to a surface normalized rate constant (k(SA)) of approximately 0.03 L/h/m(2), two orders of magnitude higher than that of reported data on zero-valent iron particles under near neutral pH conditions. Hydrocarbons including methane and ethane were the major products that accounted for about 38% and 27% of the carbon tetrachloride lost, respectively. Repetitive addition of carbon tetrachloride showed no loss of activity of Pd/Fe/Al particles for more than 20 cycles. In the absence of palladium, the degradation rate decreased by a factor of 10 suggesting palladium serves as a catalyst. Analysis of anions in the solution revealed that the chloride accounted for 75% of the carbon tetrachloride lost. Metallic ions for aluminum and iron were determined to be about 0.02 and 20 mg/L, respectively at the end of the experiment. No palladium ion was measured.
File Format	HTM / HTML
ISSN	02731223
Issue Number	1
Journal	Water Science & Technology
Volume Number	62
e-ISSN	19969732
Language	English
Publisher	IWA Publishing
Publisher Date	2010-01-01
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Discipline Hydrology Carbon Tetrachloride Chemistry Metals Water Pollutants, Chemical Catalysis Evaluation Studies Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Environmental Engineering Water Science and Technology

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