title: The sorption of pentachlorophenol by aged sediment supplemented with black carbon produced from rice straw and fly ash.
abstract: Black carbon (BC) is a potential material for controlling hydrophobic organic contaminants in sediment because it has a high sorption capacity. In the present study, the sorption of pentachlorophenol (PCP) onto sediments supplemented with rice straw biochar (RC) and fly ash (FC) aged for different times and at temperatures were investigated. The sorption of PCP increased with increasing amounts of BC and decreased with aging time and storage temperature of the BC-supplemented sediments. The sorption of PCP onto RC-supplemented sediments was higher than those supplemented with FC regardless of whether or not BCs were aged in sediments. For aged sediments containing 2% BCs, the sorption capacity was 9.15- and 2.87-fold higher than that of FC when supplemented with RC aged at 25 and 45°C, respectively. Therefore, biochar is better than fly ash for controlling organic pollutants even when the RC was present in sediment for a long time.
authors.affiliation: The Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, China.
authors.forename: Liping
authors.initials: L
authors.lastname: Lou
authors.forename: Ling
authors.initials: L
authors.lastname: Luo
authors.forename: Guanghuan
authors.initials: G
authors.lastname: Cheng
authors.forename: Yanfei
authors.initials: Y
authors.lastname: Wei
authors.forename: Rongwu
authors.initials: R
authors.lastname: Mei
authors.forename: Bei
authors.initials: B
authors.lastname: Xun
authors.forename: Xinhua
authors.initials: X
authors.lastname: Xu
authors.forename: Baolan
authors.initials: B
authors.lastname: Hu
authors.forename: Yingxu
authors.initials: Y
authors.lastname: Chen
mesh_terms: D000327:Adsorption; D060729:Coal Ash / Q000737:chemistry*; D019015:Geologic Sediments / Q000737:chemistry*; D007700:Kinetics; D008956:Models, Chemical; D012275:Oryza / Q000737:chemistry*; D010416:Pentachlorophenol / Q000302:isolation & purification*; D053260:Soot / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors; D014866:Waste Products
chemical_list: D060729:Coal Ash; D053260:Soot; D014866:Waste Products; D010416:Pentachlorophenol