Recovery of platinum group metals (PGM) utilizing anaerobic microbial consortia
Platinum group metals (PGM) are important for advanced technology and their future supply is also at risk,thus recovery of PGM from waste streams is critical.This study focusses on the recovery of soluble platinum and rhodium salts (Pt(Ⅳ) and Rh(Ⅲ)) as insoluble zero valent nanoparticles (Pt(0) and Rh(0) NPs) utilizing granular methanogenic sludge.Ethanol supported rapid bioreduction of Pt(Ⅳ) and Rh(Ⅲ) by the sludge to Pt(0) and Rh(0) NPs;whereas,hydrogen caused chemical reduction of these PGM salts.Interspecies hydrogen formation during acetogenesis of ethanol is hypothesized to play a role in the bioreduction of Pt(Ⅳ) and Rh(Ⅲ).XRD evidence of the zero valent Pt and Rh species and TEM imaging ofbiogenic NPs was obtained in the study.
Platinum rhodium bio-recovery strategic metals anaerobic methanogenic sludge nanoparticles
A Simon-Pascual K.Zhu R.Sierra-Alvarez J.A.Field
Department of Chemical and Environmental Engineering, University of Arizona, P.O Box 210011, Tucson, Arizona, 85721 USA
国际会议
The 15th IWA World Conference on Anaerobic Digestion( 第15届IWA世界厌氧大会)
北京
英文
479-482
2017-10-17（万方平台首次上网日期，不代表论文的发表时间）