화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.20, No.5, 3543-3549, September, 2014
DOI10.1016/j.jiec.2013.12.047  Export Citation
Simultaneous removal of Pb(II) and Cr(III) by magnetite nanoparticles using various synthesis conditions
Ting Wang1, Xiaoying Jin1, Zuliang Chen1, 2, †, Mallavarapu Megharaj2, 3, and Ravendra Naidu2, 3
  • 1School of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, Fujian Province, China
  • 2Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes 5095, SA, Australia
  • 3Cooperative Research Centre for Contamination Assessment and Remediation of Environments, Mawson Lakes 5095, SA, Australia
E-mail:
This study concerns the removal of Pb(II) and Cr(III) using magnetite nanoparticles synthesized by coprecipitation methods with (NCM) or without (CM) nitrogen gas passing through. Removal of Pb(II) significantly decreased from 80.56 to 41.41% when Cr(III) was co-presented, while decrease of Cr(III) was negligible when Pb(II) was present, falling from 42.37 to 38.48%. The characterizations indicated that the removal mechanism occurred through adsorption rather than chemical redox reaction. A co-adsorption mechanism is based on Pb(II) involved surface complexation, while Cr(III) was firstly adsorbed onto magnetite, followed by a partially substitution of Cr(III) for Fe(III) in Cr-Fe3O4 through ion exchanges.
Keywords:Magnetite nanoparticles;Pb(II);Cr(III);Mechanism;Characterization
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