|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Pan American Materials Congress: Minerals Extraction and Processing
||Biotechnological Recycling of Precious Metals Sourced from Post-consumer Products
||Norizo Saito, Toshiyuki Nomura, Yasuhiro Konishi
|On-Site Speaker (Planned)
We have developed new recycling technologies, based upon an eco-friendly biotechnology, in order to extract precious metals sourced from post-consumer products. Recently we have been focusing on metal ion-reducing microorganisms, Shewanella bacteria that are able to separate and concentrate platinum group metals and gold from solution into microbial cells. In a process, Shewanella bacteria can then be processed to generate metallic nanoparticles at room temperature, within 60 min. When processing the aqua regia leachate of printed circuit boards, Shewanella bacteria were able to rapidly and selectively collect gold ions from acidic solution. This microbial ability demonstrates the potential for commercialization of this bio-recovery process. The biotechnological procedure also has the potential to allow the recovery of platinum group metals from the leachates of spent automotive catalysts. Our proposed biological method enables the rapid and highly efficient recovery of precious metals by using microbial reactions at room temperature.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)