화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.22, 280-287, February, 2015
DOI10.1016/j.jiec.2014.07.021  Export Citation
Simultaneous removal of 2,4-dichlorophenol and Pb(II) from aqueous solution using organoclays: Isotherm, kinetics and mechanism
Li Huang1, 2, Yan Zhou3, Xiangquan Guo1, 4, and Zuliang Chen3, 5, †
  • 1College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, People’s Republic of China
  • 2Xiamen Entry-Exit Inspection and Quarantine Bureau, Xiamen 361012, Fujian Province, People’s Republic of China
  • 3School of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, Fujian Province, People’s Republic of China
  • 4, China
  • 5Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia
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In this paper, the sorption of 2,4-DCP onto DK4 (modified with dioctadecyldimethylammoniumchloride (DDAC)) was 3.5 times more than when using Na-bentonite, while sorption of Pb(II) on DK4 was not different from using Na-bentonite. Sorption isotherms for 2,4-DCP and Pb(II) were well described by the Langmuir isotherm (R2 > 0.99), while pseudo-second-order kinetic model provided good kinetic data fitting (R2 > 0.99). Furthermore, DK4 was characterized by SEM.EDS, XRD and FTIR, it is concluded that the co-sorption of 2,4-DCP and Pb(II) onto DK4 occurred through the partition mechanism for adsorbing 2,4-DCP and the ion-exchange mechanism for the sorption of Pb(II).
Keywords:Simultaneous sorption;Mixed-contaminants;Organoclay;Characterization;2,4-DCP and Pb(II)
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