화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.33, No.9, 2684-2690, September, 2016
DOI10.1007/s11814-016-0123-5  Export Citation
Selective recovery of Fe(III), Pd(II), Pt(IV), Rh(III) and Ce(III) from simulated leach liquors of spent automobile catalyst by solvent extraction and cementation
Thi Hong Nguyen, Batchu Nagaphani Kumar1, and Man Seung Lee†
  • Department of Advanced Materials Science & Engineering, Institute of Rare Metal, Mokpo National University, Chonnam 58554, Korea
  • 1Department of Chemistry, KU Leuven-University of Leuven, Celestijnenlaan 200F, P. O. Box 2404, B-3001 Leuven, Belgium
E-mail:
A hydrometallurical process was developed to recover Fe(III), Pd(II), Pt(IV), Rh(III) and Ce(III) from the leach liquor of spent automobile catalysts. Fe(III) was first separated by extraction with tri-butyl-phosphate (TBP). Extraction of the raffinate with tri-isooctylamine (Alamine 308) led to co-extraction of Pd(II) and Pt(IV). They were separately stripped from the loaded Alamine 308 by using a mixture of HCl and thiourea with different concentration. After the recovery of HCl in the raffinate by extraction with tri-2-ethylhexyl amine (TEHA), Rh(III) was recovered by cementation with zinc metal powder. A process flow sheet with the corresponding McCabe-Thiele plots for extraction and stripping was proposed.
Keywords:Spent Automobile Catalyst;Palladium;Platinum;Rhodium;Solvent Extraction
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