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在受污染的土壤中同时固定多种重金属,并通过机械激活废渣废渣进行修改

Mengyu Ma¹, Zhihao Ha², Xiangqun Xu²

¹Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China; College of Resources and Environmental Science, South-Central Minzu University, Wuhan 430074, China; Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central Minzu University, Wuhan 430074, China.

The Science of the total environment

|June 12, 2023

概括

电解渣 (EMS) 经过修改为被动器 (M-EMS) 有效地吸附和稳定受污染的土壤中的重金属. 这种绿色整治方法增强了土壤微生物的多样性,并提供了一个可持续的废物回收战略.

科学领域:

环境科学环境科学
地质化学地质化学
微生物学微生物学

背景情况:

工业发展导致严重的重金属土壤污染,造成环境风险.
利用工业副产品的绿色整治策略对于可持续的废物回收至关重要.
电解渣 (EMS) 是开发有效的土壤整治剂的潜在资源.

研究的目的:

为了研究改性电解渣 (M-EMS) 的重金属吸附性能.
为了评估M-EMS在受污染的土壤中的重金属被动化能力.
分析溶解有机物 (DOM) 的变化及其对土壤微生物群落结构的影响.

主要方法:

机械激活和修改EMS成为M-EMS.
吸附实验以确定重金属去除能力 (As(V),Cd²⁺,Cu²⁺,Pb²⁺).
土壤化实验以评估被动化效应,DOM变化和微生物社区结构分析 (XRD,FTIR,XPS).

主要成果:

M-EMS对As (V) (76.32 mg/g),Cd²⁺ (301.41 mg/g),Cu²⁺ (306.83 mg/g) 和Pb²⁺ (826.81 mg/g) 的吸附能力很高.
被动化效应排名为Pb > Cr > As > Ni > Cd > Cu,其中Pb达到97.59%的被动化.
添加M-EMS增强了微生物多样性,并通过微生物介导机制诱导重金属被动化.

结论:

M-EMS是污染土壤中的多重金属的有效消极剂.
稳定机制包括离子交换,静电吸附,复杂沉和微生物诱导的稳定.
这项研究提供了关于重金属污染现场的生态整治和使用EMS基复合材料的废物回收利用的见解.

关键词:

吸附方式吸附方式吸附方式电解渣的电解渣是什么重金属是一种重金属.土壤整治土壤整治土壤整治

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