title: Preferential adsorption of pentachlorophenol from chlorophenols-containing wastewater using N-doped ordered mesoporous carbon.
abstract: Preferential removal of pentachlorophenol (PCP) from chlorophenols-containing wastewater has been attracted more attentions in wastewater treatment, since it is one of the most toxic pollutants. The adsorbent of N-doped ordered mesoporous carbon (M-OMC) with high BET surface area of 1901 m(2)/g, large pore volume of 1.64 cm(3)/g and uniform pore size of 3.45 nm has been successfully synthesized via evaporation-induced self-assembly (EISA) method. The effects of solution pH, pore structure of adsorbent and their surface chemical properties on PCP adsorption by M-OMC were investigated in comparison with ordered mesoporous carbon (OMC), and much higher PCP adsorption capacities of M-OMC were obtained. The significantly preferential adsorption of PCP was achieved in the treatment of tri-component wastewater including PCP, p-chlorophenol (CP) and 2.4.6-trichlorophenol (TCP), and its adsorption process well fitted the pseudo-second-order kinetics model and the Langmuir isotherm. The initial sorption rate of PCP was 103.5 μmol/(g/min), which was 2.97 times of TCP. It may be attributed to the intensification of π-π interaction between PCP and M-OMC with the nitrogen functional groups. Therefore, M-OMC is promising for removal of PCP in the adsorption pretreatment of chlorophenols-containing wastewater.
authors.affiliation: Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Yang
authors.affiliation: Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
authors.forename: Yunpeng
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
authors.forename: Zhongjian
authors.initials: Z
authors.lastname: Li
authors.affiliation: Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
authors.forename: Lecheng
authors.initials: L
authors.lastname: Lei
authors.affiliation: Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China. jane@hdu.edu.cn.|Department of Environmental Science and Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China. jane@hdu.edu.cn.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhou
authors.affiliation: Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China. xwzhang@zju.edu.cn.
authors.forename: Xingwang
authors.initials: X
authors.lastname: Zhang
mesh_terms: D000327:Adsorption; D002244:Carbon / Q000737:chemistry; D002733:Chlorophenols / Q000737:chemistry; D010416:Pentachlorophenol / Q000737:chemistry*; D016062:Porosity; D013499:Surface Properties; D062065:Wastewater; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: D002244:Carbon; D002733:Chlorophenols; D010416:Pentachlorophenol; D062065:Wastewater; D014874:Water Pollutants, Chemical; C029107:4-chlorophenol; C024564:2,4,6-trichlorophenol
keywords: Chlorinated phenols; Melamine-doping; Multicomponent adsorption and water pollution; Priority pollutants; Selective adsorption