This study evaluates the economic viability of bioleaching for tungsten recovery from semiconductor waste, comparing two separation methods: activated carbon adsorption–desorption and ammonium paratungstate precipitation. The economic analysis reveals slight differences, with the latter method incurring about 7% higher capital investment. Bioleaching, particularly due to the need for multiple reactors for extended processing times, dominates the costs, accounting for more than 85% of total expenses in both cases. Sensitivity analysis shows that increasing pulp density can improve economic returns, suggesting the benefit of adapting microbial strains to high-pulp-density environments for optimized metal leaching. Additionally, a reduction in the culturing period significantly decreases costs, highlighting the economic advantage of shorter processing durations. Developing efficient microbial strains for quicker processing is deemed crucial for the process’s economic viability, offering insights for optimizing metal recovery in industrial applications, thereby impacting waste management and resource recovery practices in semiconductor and related industries.

中文翻译：

---

半导体工业废料生物浸取钨回收的经济可行性评价


本研究评估了生物浸出从半导体废料中回收钨的经济可行性，比较了两种分离方法：活性炭吸附-解吸和仲钨酸铵沉淀。经济分析显示略有差异，后一种方法的资本投资要高出约 7%。生物浸出成本占主导地位，尤其是由于需要多个反应器来延长处理时间，在这两种情况下均占总成本的 85% 以上。敏感性分析表明，增加矿浆密度可以提高经济回报，这表明使微生物菌株适应高矿浆密度环境有利于优化金属浸出。此外，培养时间的缩短显着降低了成本，凸显了较短加工时间的经济优势。开发高效的微生物菌株以实现更快的加工被认为对于该工艺的经济可行性至关重要，为优化工业应用中的金属回收提供见解，从而影响半导体及相关行业的废物管理和资源回收实践。