title: Immobilization of pentachlorophenol in soil using carbonaceous material amendments.
abstract: In this study, three pentachlorophenol (PCP) laboratory-spiked and one field-contaminated soil were amended with 2.0% char, humic acid (HA) and peat, respectively. The amended soils were aged for either 7 or 250 days. After amendment, CaCl(2) extractability of PCP was significantly decreased. Desorption kinetics indicated that the proposed amendment could lead to a strong binding and slow desorption of PCP in soils. Amendment with char reduced the bioaccumulation factor (BAF) of PCP most significantly for earthworms (Eisenia fetida) in all soils studied. The results of both physicochemical and biological tests suggested that amendment reduced PCP bioavailability quickly and enduringly, implying that carbonaceous material amendment, especially char amendment, was a potentially attractive in situ remediation method for sequestration of PCP in contaminated soil.
authors.affiliation: State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing Road, Haidian District, Beijing 100085, China.
authors.forename: Bei
authors.initials: B
authors.lastname: Wen
authors.forename: Rui-Juan
authors.initials: RJ
authors.lastname: Li
authors.forename: Shuzhen
authors.initials: S
authors.lastname: Zhang
authors.forename: Xiao-Quan
authors.initials: XQ
authors.lastname: Shan
authors.forename: Jing
authors.initials: J
authors.lastname: Fang
authors.forename: Ke
authors.initials: K
authors.lastname: Xiao
authors.forename: Shahamat U
authors.initials: SU
authors.lastname: Khan
mesh_terms: D002122:Calcium Chloride / Q000494:pharmacology; D052918:Environmental Restoration and Remediation / Q000379:methods*; D019015:Geologic Sediments; D006812:Humic Substances; D010416:Pentachlorophenol / Q000032:analysis; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis
chemical_list: D006812:Humic Substances; D012987:Soil; D012989:Soil Pollutants; D010416:Pentachlorophenol; D002122:Calcium Chloride