Document Detail

The dechlorination of cyclodiene pesticides by methanogenic granular sludge.
MedLine Citation:
PMID:  15013670     Owner:  NLM     Status:  MEDLINE    
Cyclodiene pesticides: aldrin, isodrin, dieldrin and endrin were dechlorinated by methanogenic granular sludge in spiked batch tests. Initial pesticides concentration was 7 or 9 mgl(-1). Two monodechlorinated analogues were formed during the conversions of aldrin and isodrin. Dieldrin was transformed into two monodechlorinated products as well as into aldrin and two monodechlorinated derivatives of aldrin. In respect of endrin three monodechlorinated and three didechlorinated products were found. The dechlorination of endrin was the most rapid, and was almost complete within 28 days. The dechlorinations of aldrin, isodrin and dieldrin were much slower: over a period of 3 months only 59%, 70% and 88% was transformed, respectively. The amounts of released chloride corresponded 0.54 +/- 0.23, 1.05 +/- 0.25, 1.10 +/- 0.12 of theoretical value for suggested reactions, for aldrin, isodrin and dieldrin respectively. For endrin it was much higher. These transformations did not occur in control samples containing autoclaved granules or in control blank samples without sludge. However, in aldrin spiked blanks, a conversion into a six-chlorinated analogue was found.
Tomasz P Baczynski; Tim Grotenhuis; Petronella Knipscheer
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Chemosphere     Volume:  55     ISSN:  0045-6535     ISO Abbreviation:  Chemosphere     Publication Date:  2004 May 
Date Detail:
Created Date:  2004-03-11     Completed Date:  2004-06-02     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  England    
Other Details:
Languages:  eng     Pagination:  653-9     Citation Subset:  IM    
The Institute of Water Supply and Environmental Protection, Cracow University of Technology, 31-155 Krakow, ul. Warszawska 24, Poland.
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MeSH Terms
Bacteria, Anaerobic / metabolism*
Biodegradation, Environmental
Chlorine / metabolism
Gas Chromatography-Mass Spectrometry
Hydrocarbons, Chlorinated*
Insecticides / metabolism*
Pesticide Residues / chemistry*
Sewage / chemistry*,  microbiology
Reg. No./Substance:
0/Hydrocarbons, Chlorinated; 0/Insecticides; 0/Pesticide Residues; 0/Sewage; 7782-50-5/Chlorine

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

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