Document Detail


Formation behavior of PCDD/Fs in PVC pyrolysis with copper oxide.
MedLine Citation:
PMID:  12547337     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Formation and decomposition behaviors of PCDD/Fs during pyrolysis of polyvinyl chloride (PVC) with CuO have been investigated. These reactions proceed simultaneously, and the rate of decomposition exceeds that of formation with further retention. More 2,3,7,8-TCDD is formed when the dechlorination of PCDD/Fs proceeds significantly. Homologue profile patterns of PCDD/Fs show that the fractions of O8CDD and H6CDFs are relatively larger within PCDDs and PCDFs, respectively. Extremely large amounts of PCDD/Fs are obtained with the long retention time at 200 degrees C. The formation of PCDD/Fs decreases drastically with increase in the molar ratio of CuO/PVC. The acceptability of thermodynamic calculations on the formation of PCDD/Fs is also investigated. The thermodynamic calculated tendency of the effect of oxygen on the formation of PCDD/Fs agrees well with the experimental results, although absolute values of the amount of PCDD/Fs are much different.
Authors:
Etsuro Shibata; Satoru Yamamoto; Eiki Kasai; Takashi Nakamura
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Chemosphere     Volume:  50     ISSN:  0045-6535     ISO Abbreviation:  Chemosphere     Publication Date:  2003 Mar 
Date Detail:
Created Date:  2003-01-27     Completed Date:  2003-05-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  England    
Other Details:
Languages:  eng     Pagination:  1235-42     Citation Subset:  IM    
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 1,1 Katahira, 2-Chome, Aobaku, Sendai 980-8577, Japan. etsuro@tagen.tohoku.ac.jp
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MeSH Terms
Descriptor/Qualifier:
Benzofurans / chemistry*
Copper / chemistry*
Incineration / methods*
Polyvinyl Chloride / chemistry*
Temperature
Tetrachlorodibenzodioxin / analogs & derivatives*,  chemistry*
Thermodynamics
Time Factors
Chemical
Reg. No./Substance:
0/Benzofurans; 0/chlorinated dibenzofurans; 0/polychlorodibenzo-4-dioxin; 1317-38-0/cupric oxide; 1746-01-6/Tetrachlorodibenzodioxin; 7440-50-8/Copper; 9002-86-2/Polyvinyl Chloride

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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