CSIRO Land and Water, Private Bag No. 5, Wembley, Western Australia 6913, Australia.
CSIRO Land and Water, Private Bag No. 5, Wembley, Western Australia 6913, Australia.
J Hazard Mater. 2018 Oct 15;360:504-511. doi: 10.1016/j.jhazmat.2018.08.024. Epub 2018 Aug 16.
Applying biohydrometallurgy for metal extraction and recovery from mixed and polymetallic wastes such as electronic waste is limited due to microbial inhibition at low pulp densities and substrate (iron and sulfur) limitation. Here, we investigated the application of indirect non-contact bioleaching with biogenic ferric iron and sulfuric acid to extract metals from lithium-ion battery (LIB) waste. Results showed that although a single leach stage at ambient temperature only facilitated low leach yields (<10%), leach yields for all metals improved with multiple sequential leach stages (4 × 1 h). Biogenic ferric leaching augmented with 100 mM HSO further enabled the highest leach yields (53.2% cobalt, 60.0% lithium, 48.7% nickel, 81.8% manganese, 74.4% copper). The proposed use of bioreagents is a viable and a more environmentally benign alternative to traditional mineral processing, which could be further improved by appropriate pre-treatment of the LIB waste.
应用生物湿法冶金从混合和多金属废物（如电子废物）中提取和回收金属受到限制，因为在低矿浆密度和基质（铁和硫）限制下微生物受到抑制。在这里，我们研究了间接非接触生物浸出用生物成因的三价铁和硫酸从锂离子电池（LIB）废物中提取金属的应用。结果表明，尽管在环境温度下进行单一浸出阶段仅有利于低浸出率（<10%），但随着多个连续浸出阶段（4×1 小时）的进行，所有金属的浸出率都得到了提高。用 100mM HSO 增强的生物成因的三价铁浸出进一步实现了最高的浸出率（53.2%钴、60.0%锂、48.7%镍、81.8%锰、74.4%铜）。生物试剂的拟议使用是一种可行的、更环保的传统矿物加工替代方法，通过对 LIB 废物进行适当的预处理，可以进一步提高其效率。
