화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.27, 115-125, July, 2015
DOI10.1016/j.jiec.2014.12.025  Export Citation
Steel slag as a low-cost sorbent for metal removal in the presence of chelating agents
Eveliina Repo†, Jolanta K. Warchol1, Lena Johansson Westholm2, and Mika Sillanpaa†
  • Laboratory of Green Chemistry, LUT Chemtech, Lappeenranta University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland
  • 1Department of Water Purification and Protection, Rzeszow University of Technology, 6 Powstancow Warszawy Street, 35-959 Rzeszow, Poland
  • 2School of Business, Technology and Engineering, Malardalen University, P.O. Box 883, SE-721 23 Vasteras, Sweden
E-mail:,
Industrial byproduct, steel slag was used as a low-cost sorbent for the removal of Co(II), Ni(II), Cd(II), and Pb(II) from aqueous solutions containing chelating agents; EDTA, citrate, and oxalate. Equilibrium and kinetic studies were conducted. Clear dependency between speciation of metals and their sorption behavior was observed. Precipitation and adsorption were suggested as main mechanisms. Diffusion played an important role in the kinetics of metal removal. Notable leaching of elements was observed when steel slag was in contact with the solutions under study. Modification with chitosan was successfully used to prevent leaching and improve the sorption capacity of steel slag.
Keywords:Byproduct slag;Low-cost sorbent;Metal chelates;EDTA;Water treatment;Adsorption
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