title: Permeable reactive barrier of coarse sand-supported zero valent iron for the removal of 2,4-dichlorophenol in groundwater.
abstract: In this study, coarse sand-supported zero valent iron (ZVI) composite was synthesized by adding sodium alginate to immobilize. Composite was detected by scanning electron microscope (SEM), X-ray diffraction (XRD), and X-ray fluorescence (XRF). SEM results showed that composite had core-shell structure and a wide porous distribution pattern. The synthesized composite was used for degradation of 2,4-dichlorophenol (2,4-DCP) contamination in groundwater. Experimental results demonstrated that degradation mechanism of 2,4-DCP using coarse sand-supported ZVI included adsorption, desorption, and dechlorination. 2,4-DCP adsorption was described as pseudo-second-order kinetic model. It was concluded that dechlorination was the key reaction pathway, ZVI and hydrogen are prime reductants in dechlorination of 2,4-DCP using ZVI.
authors.affiliation: Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China.
authors.forename: Weichun
authors.initials: W
authors.lastname: Gao
authors.affiliation: Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China. yxzhang@bjut.edu.cn.
authors.forename: Yongxiang
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China.
authors.forename: Xiaoye
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China.
authors.forename: Zhilong
authors.initials: Z
authors.lastname: Duan
authors.affiliation: Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China.
authors.forename: Youhao
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China.
authors.forename: Can
authors.initials: C
authors.lastname: Qin
authors.affiliation: Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Hu
authors.affiliation: Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China.
authors.forename: Hao
authors.initials: H
authors.lastname: Wang
authors.affiliation: Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China.
authors.forename: Shan
authors.initials: S
authors.lastname: Chang
mesh_terms: D000327:Adsorption; D000464:Alginates / Q000737:chemistry*; D002733:Chlorophenols / Q000302:isolation & purification*; D020723:Glucuronic Acid / Q000737:chemistry; D060587:Groundwater / Q000737:chemistry*; D006603:Hexuronic Acids / Q000737:chemistry; D007501:Iron / Q000737:chemistry*; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D008962:Models, Theoretical; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods; D014961:X-Ray Diffraction
chemical_list: D000464:Alginates; D002733:Chlorophenols; D006603:Hexuronic Acids; D014874:Water Pollutants, Chemical; D012822:Silicon Dioxide; D020723:Glucuronic Acid; D007501:Iron; C004762:2,4-dichlorophenol
keywords: 2,4-dichlorophenol; Coarse sand; Dechlorination; Groundwater; Permeable reactive barrier; Zero valent iron