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煤中的重金属的漂水法:实验优化和模拟的结合

Hualin Zhang¹, Qiong Li², Mengfei Zhao¹

¹Key Laboratory of Rare Earths, Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341119, China; School of Metallurgical engineering, Jiangxi University of Science and Technology, Ganzhou 341099, China.

Journal of hazardous materials

|December 7, 2024

概括

这项研究优化了使用EDTA-2Na.Na.从煤中去除重金属的方法. 最佳条件提高了,和铜的浸,为废物管理提供了经济的解决方案.

科学领域:

环境科学与工程环境科学与工程
地质化学地质化学
废物管理废物管理

背景情况:

煤炭,煤炭开采的主要固体废物,带来了重大的环境挑战.
煤炭中的重金属 (Pb,Zn,Cu) 可以入环境,造成污染.
有效的方法来从煤炭中去除重金属对于可持续采矿至关重要.

研究的目的:

为了优化漏过程,从煤炭中去除重金属.
为了研究重金属漏的潜在机制.
为了评估乙烯二胺三酸二盐 (EDTA-2Na) 作为液剂的效率.

主要方法:

用于去除重金属的不同化剂的实验评估.
优化浸出条件 (EDTA-2Na度,pH,固体-液体比,时间,速度) 使用盒式设计.
使用视觉MINTEQ和密度函数理论 (DFT) 进行模拟研究,以了解漏机制.

主要成果:

在优化的水条件下,使用EDTA-2Na.Na.实现了有效的Pb (86 mg/kg),Zn (430 mg/kg) 和Cu (66 mg/kg) 的去除.
影响漏的关键因素是分离剂度和固体液体比率.
模拟提供了对重金属释放机制和动态行为的洞察.

结论:

EDTA-2Na是从煤炭中出重金属的有效剂.
该研究阐明EDTA-2Na通过离子交换和复杂化增强重金属出.
这些发现提供了一种可行的方法来弥补煤炭污染和减轻环境污染.

关键词:

煤炭集团是一个团伙.DFT计算方法的计算方法在EDTA−2Na中.沉重金属的漂水是重金属的漂水这是一个视觉MINTEQ模拟.

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