화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.20, No.5, 3025-3032, September, 2014
DOI10.1016/j.jiec.2013.11.038  Export Citation
Removal of Cr(VI) from aqueous solution by surfactant-modified kaolinite
Xiaoying Jin1, 2, Mingqin Jiang1, Jianhua Du3, and Zuliang Chen1, 4, †
  • 1School of Environment Science and Engineering, Fujian Normal University, Fuzhou 350007, Fujian Province, China
  • 2Fujian Key Laboratory of Pollution Control & Resource Reuse, Fuzhou 350007, Fujian Province, China
  • 3Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia
  • 4Centre for Environmental Risk Assessment and Remediation, Fujian Key Laboratory of Pollution Control & Resource Reuse, University of South Australia, Fuzhou 350007, Fujian Province, China, Mawson Lakes, SA 5095, Australia
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Removal of Cr(VI) from aqueous solution by hexadecyltrimethylammonium chloride (HDTMA) modified kaolinite (HMK) was investigated, where the maximum adsorptive capacity reached 27.8 mg/g Cr(VI) using HMK compared with only 0.7 mg/g using unmodified natural kaolinite (NK). The adsorption of Cr(VI) on HMK can be well described by the Langmuir isotherm, and the kinetic adsorption of Cr(VI) on both HMK and NK fitted a pseudo-second-order model. FTIR analysis showed that surface modified HDTMA was responsible for the high adsorptive capacity of Cr(VI). HMK was used to remove Cr(VI) from an electroplating wastewater.
Keywords:Modified kaolinite;HDTMA;Cr(VI);Adsorption;Wastewater
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