Change of polycyclic aromatic hydrocarbons during forced-aeration composting of anaerobic digested sludge and sawdust
The aim of the study was to determine the changes in the polycyclic aromatic hydrocarbons (PAHs) content during the forced-aeration composting of anaerobic digested sludge and sawdust. The content of 16 PAHs and some physical-chemical properties in composting products were monitored. Composting showed an efficient decrease of the content and the bioavailability of individual PAH. The total PAH content (ΣPAHs) ranged from 7.846 to 1.790 mg/ (kg·dry sample) for 31 days of composting, and Four-and three-ring compounds were predominant during the composting. Biodegradation and sorption are suggested as the mainly degradation for PAHs with a low number of aromatic rings and PAHs with a large number of aromatic rings, respectively. Concentration, distribution pattern and degradation rate of PAHs in compost product were closely relative with PAHs features in the raw sludge.
PAHs composting digested sludge sawdust physicalchemical property
Mengchun Gao Lijuan Yang Yanxia Sun An Yu
Key Lab of Marine Environmental Science and Ecology,Ministry of Education,Ocean University of China, College of Environmental Science and Engineering,Ocean University of China,OUC Qingdao 266100,China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）