| Budget Amount *help |
¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2013: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2012: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Fiscal Year 2011: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
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| Research Abstract |
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
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