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Open Access Green as soon as Postprint is submitted to ZB.
Enhanced degradation of 14C-HCB in two tropical clay soils using multiple anaerobic-aerobic cycles.
Environ. Pollut. 173, 168-175 (2013)
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
ISSN (print) / ISBN
0269-7491
e-ISSN
1873-6424
Journal
Environmental Pollution
Quellenangaben
Volume: 173,
Pages: 168-175
Publisher
Elsevier
Reviewing status
Peer reviewed