| Literature DB >> 17029776 |
Quan-Ying Cai1, Ce-Hui Mo, Qi-Tang Wu, Qiao-Yun Zeng, Athanasios Katsoyiannis, Jean-François Férard.
Abstract
The efficiency of four different composting processes to bioremediate polycyclic aromatic hydrocarbons (PAHs)-contaminated sewage sludge was investigated. Prior to composting, sewage sludge coming from the Datansha wastewater treatment plant, Guangzhou, China, was mixed with rice straw to obtain a C/N ratio of 13:1. After 56 days of composting, the total concentrations of 16 PAHs (Sigma(PAHs)) ranged from 1.8 to 10.2 mg kg(-1) dry weight, decreasing in order of inoculated-manual turned compost (IMTC)>manual turned compost (MTC)>continuous aerated compost (CAC)>intermittent aerated compost (IAC), exhibiting removal rates of 64%, 70%, 85% and 94%, respectively. Individual PAHs were generally removed in similar rates. IAC treatment showed a higher removal rate of high molecular weight PAHs and carcinogenic PAHs comparing to the other composting processes.Entities:
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Year: 2006 PMID： 17029776 DOI： 10.1016/j.jhazmat.2006.08.062
Source DB: PubMed Journal: J Hazard Mater ISSN： 0304-3894 Impact factor: 10.588