title: Degradation of 1-(2-chlorobenzoyl)-3-(4-chlorophenyl) urea by nanoscale zerovalent iron under aerobic and anaerobic conditions.
abstract: The goal of present study was to investigate the applicability of nanoscale zerovalent iron (NZVI) on the degradation of 1-(2-chlorobenzoyl)-3-(4-chlorophenyl) urea (CCU) under aerobic and anaerobic conditions, respectively. The experimental results showed that NZVI could effectively degrade CCU, but the removal efficiencies were different under these two different conditions. The best removal efficiencies for CCU were 90.2 and 75.8% under aerobic and anaerobic conditions, respectively. The highly oxidative hydroxyl radicals and reductively hydrogen would account for the rapid degradation of CCU under aerobic and anaerobic conditions, respectively. The experimental results also showed that surfactant Tween 20 significantly inhibited the degradation of CCU under aerobic conditions. However it markedly enhanced the degradation of CCU under anaerobic condition.
authors.affiliation: School of Chemistry and Environmental Sciences, Henan Normal University, Henan Key Laboratory for Environmental Pollution Control, Ministry of Education, Xinxiang, China.
authors.forename: Haiying
authors.initials: H
authors.lastname: Lin
authors.forename: Shaogang
authors.initials: S
authors.lastname: Hou
authors.forename: Guohong
authors.initials: G
authors.lastname: Xie
authors.forename: Ziwei
authors.initials: Z
authors.lastname: Yao
authors.forename: Qingxiang
authors.initials: Q
authors.lastname: Zhou
mesh_terms: D000332:Aerobiosis; D000693:Anaerobiosis; D004785:Environmental Pollutants / Q000737:chemistry*; D052918:Environmental Restoration and Remediation / Q000379:methods*; D007306:Insecticides / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D007605:Juvenile Hormones / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D014508:Urea / Q000031:analogs & derivatives* / Q000737:chemistry
chemical_list: C495513:1-(2-chlorobenzoyl)-3-(4-chlorophenyl)urea; D004785:Environmental Pollutants; D007306:Insecticides; D007605:Juvenile Hormones; D014508:Urea; D007501:Iron