利用工业副产品作为用于废弃物随机访问内存中的黄金生物洗的营养物质
Ngoc Tu Trinh Tran1, Duy Tho Tran2, Thi Phuong Thuy Pham3
1Division of Semiconductor and Chemical Engineering, Jeonbuk National University, Jeonju, Jeonbuk 561-756, Republic of Korea.
Bioresource technology
|July 5, 2025
概括
本研究提出了一种具有成本效益的方法,用于从废弃随机存取内存中回收黄金,使用Chromobacterium violaceum生物溶解. 缩蒸机溶剂增强了化物生产,达到98.6%的黄金洗效率.
科学领域:
- * 环境科学 环境科学
- * 材料科学 材料科学
- * 生物技术 * 生物技术
背景情况:
- *电子废物,特别是废弃的随机访问存储器 (WRAM),含有有价值的黄金 (Au).
- * 传统的黄金回收方法可能对环境有害且昂贵.
- *生物化为金属回收提供了一个潜在的可持续替代方案.
研究的目的:
- * 开发一种高效和环保的方法来从WRAM中回收黄金.
- * 调查凝结蒸溶剂 (CDS) 的使用,以增强生物溶解.
- *为了最大限度地回收黄金,优化生物炼参数.
主要方法:
- *选择性地从WRAM中去除普通金属,使用Fe2(SO4) 3.3.
- *使用Chromobacterium violaceum.um进行黄金的生物洗.
- *优化生物溶解参数:纸密度,CDS度,甘氨酸剂量和pH值.
主要成果:
- *在化学预处理过程中达到99.7%的铜去除,而不会影响黄金含量.
- *优化生物炼实现了98.6%的黄金回收效率.
- *最佳条件:WRAM纸密度为10g/L,CDS为8%,糖氨酸为3g/L,pH为7.0.
结论:
- * 结合化学预处理和CDS增强的生物炼的综合方法对于从WRAM中回收黄金是有效的.
- * 这种方法简单,具有成本效益和环境可持续性.
- *Chromobacterium violaceum显示出从电子垃圾中生物溶解黄金的前景.
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