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首页> 外文会议>EPD congress;TMS annual meeting exhibition >CHALLENGES TO THE BIOTECHNOLOGICAL RECYCLING OF PRECIOUS AND RARE METALS SOURCED FROM POST-CONSUMER PRODUCTS
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CHALLENGES TO THE BIOTECHNOLOGICAL RECYCLING OF PRECIOUS AND RARE METALS SOURCED FROM POST-CONSUMER PRODUCTS

机译：消费后产品来源的贵金属和稀有金属在生物技术回收方面的挑战

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We have developed new recycling technologies, based upon an eco-friendly biotechnology, in order to extract precious and rare metals sourced from post-consumer products. Recently we have been focusing on the metal ion-reducing bacteria, Shewanella algae and Shewanella oneidensis, which are able to reduce and deposit the precious metal ions (gold (Ⅲ), platinum (Ⅳ), palladium (Ⅱ), and rhodium (Ⅲ)) into metal nanoparticles at room temperature within 120 min. When targeting the leachates from printed circuit boards, the Shewanella bacteria were able to allow selective reduction and deposition of gold (Ⅲ) ions under acidic conditions in the presence of heavy metal ions, proposing a new bio-recovery system for gold. We also found that the Shewanella bacteria can separate and concentrate soluble rare metal ions (dysprosium (Ⅲ), indium (Ⅲ), and gallium (Ⅲ)) from dilute solutions. Using this biomass adsorbent, the effectiveness of system for the novel recovery of indium from the leachate of used LCD (liquid crystal display) panels has been demonstrated.
机译：我们开发了一种基于生态友好型生物技术的新回收技术，以提取来自消费后产品的贵重金属和稀有金属。近年来，我们一直致力于能够减少和沉积贵金属离子（金（Ⅲ），铂（Ⅳ），钯（Ⅱ）和铑（Ⅲ）的金属离子还原细菌，希瓦氏藻（Shewanella algae）和希瓦氏菌（Shewanella oneidensis）。 ））在室温下120分钟内变成金属纳米粒子。当靶向印刷电路板上的浸出液时，希瓦氏菌能够在酸性条件下在重金属离子存在下选择性还原和沉积金（Ⅲ）离子，从而提出了一种新的金生物回收系统。我们还发现，希瓦氏菌可以从稀溶液中分离和浓缩可溶性稀有金属离子（s（Ⅲ），铟（Ⅲ）和镓（Ⅲ））。使用这种生物质吸附剂，已经证明了从废旧LCD（液晶显示器）面板的浸出液中新型回收铟的系统的有效性。

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