title: An assessment of the effectiveness and impact of electrokinetic remediation for pyrene-contaminated soil.
abstract: The effectiveness of electrokinetic remediation for pyrene-contaminated soil was investigated by an anode-cathode separated system using a salt bridge. The applied constant voltage was 24 V and the electrode gap was 24 cm. Two types of soil (sandy soil and loam soil) were selected because of their different conductive capabilities. The initial concentrations of pyrene in these soil samples were 261.3mg/kg sandy soil and 259.8 mg/kg loam soil. After treatment of the sandy soil and loam soil for seven days, 56.8% and 20.1% of the pyrene had been removed respectively. Under the same power supply voltage, the removal of the pollutant from the sandy soil was greater than that from the loam soil, due to the higher current and lower pH. Further analysis revealed that the effectiveness of electrokinetic remediation was affected by the energy expenditure, and was associated with changes in soil properties.
authors.affiliation: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; Graduate School of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: xusujuan919@yeah.net.
authors.forename: Sujuan
authors.initials: S
authors.lastname: Xu
authors.affiliation: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. Electronic address: shuhaiguo@iae.ac.cn.
authors.forename: Shuhai
authors.initials: S
authors.lastname: Guo
authors.affiliation: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Wu
authors.affiliation: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
authors.forename: Fengmei
authors.initials: F
authors.lastname: Li
authors.affiliation: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
authors.forename: Tingting
authors.initials: T
authors.lastname: Li
mesh_terms: D004563:Electrochemistry; D052918:Environmental Restoration and Remediation / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D011721:Pyrenes / Q000302:isolation & purification*; D012989:Soil Pollutants / Q000302:isolation & purification*
chemical_list: D011721:Pyrenes; D012989:Soil Pollutants; C030984:pyrene
keywords: Anode–cathode separated system; Electrochemical oxidation; Electrokinetic remediation; Pyrene; Soil