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用有机酸从jarosite蛋糕中浸出和:一种结合实验和DFT方法

Partha Pratim Mondal¹, Christian Hintersatz², Soniya Dhiman²

¹Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology-Delhi, New Delhi, India.

Journal of environmental management

|October 1, 2025

概括

有机酸有效地从危险的植物残留物 (JC) 中出 (Ga) 和 (Ge). 这种可持续的方法可以回收有价值的金属,并减轻有毒废物的环境污染.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
水电金术是指用水电金术进行金术.

背景情况:

植物残留物 (jarosite蛋糕) 由于重金属和酸泄漏,造成环境风险.
废弃物中的污染物可以污染土壤,地下水和水生生态系统.
开发可持续的方法来处理这些残留物对于环境保护至关重要.

研究的目的:

开发一种无毒的水力金漏工艺,用于与jarosite cake (JC) 共同处理.
为了有效地从JC提取贵金属,特别是 (Ga) 和 (Ge),从JC.
研究和优化有机酸用于金属开采和污染预防的使用.

主要方法:

有机酸浸出 (氧酸和酸) 的Ga和Ge从JC.
优化工艺参数:温度,固体与液体的比率,酸度和浸出时间.
密度函数理论 (DFT) 计算以阐明浸出机制和相互作用.
矿物释放分析 (MLA) 用于在JC中识别金属轴承阶段.

主要成果:

在最佳条件下,获得了高提取效率:Ga的96.0 ± 0.6%,Ge的79.0 ± 3.8%.
DFT的计算和实验分析证实了酸解和复合解作为漏机制.
在JC中发现了存在于硫酸盐,酸盐和氧化物阶段的Ga和Ge.
水过程被发现高度依赖pH值.

结论:

有机酸浸出是一种有效和环境可持续的方法,用于从JC提取Ga和Ge.
这种方法促进了贵重金属的回收,同时减少了植物残留物对环境的危害.
该研究为危险废物联合处理和资源回收提供了可行的解决方案.

关键词:

循环经济是一个循环经济.泄漏泄漏是一种泄漏.矿物释放分析氧化酸是一种氧化酸.二次废弃物二次废弃物是指二次废弃物.

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