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Enhanced degradation of 14C-HCB in two tropical clay soils using multiple anaerobic-aerobic cycles.

Environ. Pollut. 173, 168-175 (2013)
DOI PMC
Open Access Green as soon as Postprint is submitted to ZB.
The aim of the study was to induce and enhance the degradation of hexachlorobenzene (HCB), a highly-chlorinated persistent organic pollutant, in two ecologically different tropical soils: a paddy soil (PS) and a non-paddy soil (FS). The degradation of HCB was enhanced using two anaerobic-aerobic cycles in model laboratory experiments. There was greater degradation of HCB in the PS (half-life of 224 days) relative to the FS (half-life of 286 days). It was further shown that soils amended with compost had higher metabolite concentrations relative to the non-amended soils. In the first cycle, there was little degradation of HCB in both soils. However, in the second cycle, there was enhanced mineralization in the PS under aerobic conditions, with the compost-treated samples showing higher mineralization. There was also extensive volatilization in both soils. The metabolite pattern revealed that the increased mineralization and volatilization was due to the formation of lower chlorinated benzenes.
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Publication type Article: Journal article
Document type Scientific Article
Keywords HCB; Degradation; Mineralization; Compost; Drying-rewetting; Hexachlorobenzene Dechlorination ; Reductive Dechlorination ; Chlorinated Benzenes ; Electron-acceptors ; Sewage-sludge ; Humic Acids ; Paddy Soil ; Behavior ; Ddt ; 1,2,4-trichlorobenzene
Language english
Publication Year 2013
Prepublished in Year 2012
HGF-reported in Year 2012
ISSN (print) / ISBN 0269-7491
e-ISSN 1873-6424
Quellenangaben Volume: 173, Issue: , Pages: 168-175 Article Number: , Supplement: ,
Publisher Elsevier
Reviewing status Peer reviewed
POF-Topic(s) 20402 - Sustainable Plant Production
30202 - Environmental Health
Research field(s) Environmental Sciences
PSP Element(s) G-504400-002
G-504700-002
G-504700-001
PubMed ID 23202647
Scopus ID 84870195845
Erfassungsdatum 2012-12-14