Biotechnological recycling system of platinum group metals from urban mine

我们专注于希瓦氏菌属细菌，能够分离和浓缩铂族金属（PGMs），即钯，铂和铑，从溶液到微生物细胞。在这个过程中，我们发现微生物可以被加工成金属纳米颗粒。当处理使用过的汽车催化剂的酸浸出液，希瓦氏菌能够允许完全还原和铂族金属离子的沉积在室温下在120分钟的短操作时间内。我们提出的生态友好的方法，使铂族金属利用微生物反应在室温下的快速和高效的回收。此外，由于这种高效的工艺可以在小型紧凑的装置中实现，因此可以在消费后产品的每个收集点引入，作为一种区域分布的回收技术，有助于形成铂族金属回收系统

We have focused on Shewanella bacteria that are able to separate and concentrate platinum group metals (PGMs), namely palladium, platinum and rhodium, from solution into microbial cells. In the process, we have found that the microorganism can then be processed to generate metallic nanoparticles. When processing the acid leachate of used automotive catalysts, the Shewanella bacteria were able to allow complete reduction and deposition of PGMs ions at room temperature within a short operation period of 120 min.Our proposed eco-friendly method enables the rapid and highly efficient recovery of PGMs utilizing microbial reactions at room temperature. Moreover, as this highly efficient process is achievable in small, compact units, it can potentially be introduced at every collection point for post-consumer products, operating as a regionally distributed recycling technology that will contribute to the formation of a PGMs recycling system