The recovery of platinum group metals from model solutions and fabrication into new catalysts
Cells of Escherichia coli were cultured and premetallised using two different metals (Pd or Pt) , at three different loadings lwt％ , 2wt％ and 5wt％ dry biomass. With the broad aim to recover precious metals from wastes, these metallised cells were then exposed to a mixed Pd and Pt solution under H2 to produce biocatalysts; the ability of the premetallised cells to reduce the target metals from solution was assessed by use of SnCl2 assay. This showed that all cells reduced metals from solution in less than 2 minutes. The catalytic activity of the resultant biocatalysts was assessed by Cr (VI) reduction, showing that either a 2％ or 5％ initial pre-loading of Pd offered the best catalytic activity. Since moving the process towards commercial metal recovery and biomanufacture of new catalysts from wastes is the dual goal the economic benefit of using a 2％ pre loading suggests this as the best option.
bioremediation E. coli platinum PGM road dust
Scott Taylor Angela J. Murray Stuart Blackburn Lynne E. Macaskie Marios Tsezos
School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK School of Biosciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK National Technical University of Athens, School of Mining and Metallurgical Engineering, Laboratory
国际会议
The 19th International Biohydrometallurgy Symposium(第19届国际生物湿法冶金大会 IBS2011)
长沙
英文
1085-1089
2011-09-18（万方平台首次上网日期，不代表论文的发表时间）