Abstract：
The present study evaluated a solvo-metallurgical technique for metal extraction from industrial solid waste (jarosite) using ionic liquids (ILs) and waste-derived solvents. The jarosite contains a considerable amount of metal ions, namely iron, zinc, and lead. The jarosite was characterized by XRF, XRD, SEM, and FTIR techniques. The parameters affecting metal extraction, such as stirring time, acid molarity, and temperature, have been examined. Aliquat 336 was used to extract metals from fresh and roasted jarosite after equilibration with HCl. The response surface methodology (RSM) was used to optimize the parameters for the maximum metal extraction using [A336] [Cl]. Maximum extraction of iron (86.75%), zinc (51.96%), and lead (94.38%) from roasted jarosite was achieved at optimum conditions (125-min stirring time, 5 M acid molarity, and 20 ml/g liquid-to-solid ratio). Furthermore, the metal extraction was investigated using waste-derived solvents. The results show that waste-derived solvents, such as biomass and plastic pyrolysis oil, can effectively extract metals from fresh and roasted jarosite. Biomass pyrolysis oil achieved the highest extraction at 50 °C for 90 min, while plastic pyrolysis oil achieved the highest extraction at 50 °C for 60 min from roasted jarosite. These solvents are also cost-effective because they are made from waste plastic and biomass.
摘要：
本研究评估了使用离子液体（IL）和废物衍生溶剂从工业固体废物（jarosite）中提取金属的溶剂冶金技术。黄铁石含有大量的金属离子，即铁,锌，和铅。jarosite的特征是XRF，XRD,SEM,和FTIR技术。影响金属提取的参数，如搅拌时间，酸摩尔浓度,和温度，已经检查过了。在用HCl平衡后，使用Aliquat336从新鲜和烘烤的黄褐色盐中提取金属。响应面方法（RSM）用于优化使用[A336][Cl]的最大金属提取的参数。铁的最大提取量（86.75％），锌（51.96%），在最佳条件下（搅拌时间125分钟，5M酸摩尔浓度，和20ml/g液固比)。此外，使用废物衍生溶剂研究了金属萃取。结果表明，废物衍生溶剂，如生物质和塑料热解油，可以有效地从新鲜的和烤黄钾铁石中提取金属。生物质热解油在50°C下达到最高提取90分钟，而塑料热解油在50°C下60分钟内从焙烧的黄铁矿中获得了最高的提取。这些溶剂也具有成本效益，因为它们是由废塑料和生物质制成的。
