[Preliminary study on anaerobic bioremediation process for pentachlorophenol (PCP)-contaminated soil].
The performances of soil-slurry process with supplement of anaerobic granular sludge for remediating PCP-contaminated soil was investigated. The results showed that inherent anaerobic microbes in soil exhibited a little dechlorinating activity for simulative contaminated soil with 30 mg.kg-1 of PCP, the average PCP degradation rates within 28 d was 0.258 mg.kg-1.d-1. In soil slurry processes with 5 g.kg-1 granular sludge at aerobic, aerobic/anaerobic and anaerobic operation, the average PCP degradation rates within 28 d were 0.269, 0.291/0.842 and 0.892 mg.kg-1.d-1, respectively. PCP degradation rates were increased with increasing the amounts of anaerobic granular sludge, 0.834, 0.843, 0.928 mg.kg-1.d-1 of the average PCP degradation rates within 35 d were achieved in soil slurry processes supplemented with 5, 10, 25 g.kg-1 of granular sludge, respectively. This bioremediation process also presented higher initial PCP degradation rate for higher concentration(60 mg.kg-1) of PCP in soil.
Xu
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Depart. Environ. Eng., Zhejiang University, Hangzhou 310029.
Feng
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D000693:Anaerobiosis / Q000187:drug effects*; D001421:Bacteria, Anaerobic / Q000187:drug effects* / Q000378:metabolism; D003470:Culture Media; D004305:Dose-Response Relationship, Drug; D010416:Pentachlorophenol / Q000494:pharmacology*; D012987:Soil; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000494:pharmacology*
D003470:Culture Media; D012987:Soil; D012989:Soil Pollutants; D010416:Pentachlorophenol