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使用笔 (Atrina pectinata) 稳定受 (Pb) 和 (As) 污染的土壤

Han Gyeol Jeon^1,2, Agamemnon Koutsospyros³, Deok Hyun Moon⁴

¹Department of Environmental Engineering, Chosun University, Gwangju, 61452, Republic of Korea.

Environmental science and pollution research international

|July 22, 2024

概括

这项研究表明,烧焦笔 (CPS) 能够有效地稳定污染土壤中的 (Pb) 和 (As). 与天然笔 (NPS) 相比,CPS表现出更高的稳定性,特定的提取方法有助于评估.

科学领域:

环境科学环境科学
地质化学地质化学
土壤修复土壤的修复.

背景情况:

笔 (PS) 是大量的贝类残留物,经常被丢弃,造成潜在的环境问题.
土壤中的 (Pb) 和 (As) 污染需要有效和可持续的整治策略.
作为土壤修改物,天然笔 (NPS) 和烧焦笔 (CPS) 的再利用尚未被探索.

研究的目的:

研究NPS和CPS作为修改剂在受污染的土壤中稳定Pb和As的有效性.
分析土壤处理后污染物的矿物学变化和漏性.
评估不同化学提取方法的适用性,以评估稳定性.

主要方法:

NPS和CPS被应用于受污染的土壤中,其重量为1-10%,并经过28天的固化.
使用X射线粉末衍射 (XRD) 和扫描电子显微镜与能量分散式X射线光谱学 (SEM-EDX) 分析了矿物相.
使用0.1M HCl,EDTA-NH4OAc和顺序批量提取试验 (SBET) 方法评估了Pb和As的浸出性.

主要成果:

XRD和SEM-EDX证实了CPS处理的土壤中河边石和石的形成,有助于Pb和As的稳定.
EDTA-NH4OAc提取表明CPS在10%重量输入时比NPS更有效.
在SBET提取过程中,随着CPS的增加,SBET的浸出性增加,这表明有固定机制,但在酸性条件下建议谨慎使用.

结论:

化笔 (CPS) 显示出在污染土壤中稳定Pb和As的巨大潜力,其性能优于天然笔 (NPS).
在CPS处理的土壤中存在河石和石,这有助于污染物的固定.
使用多种提取方法,特别是EDTA-NH4OAc,可以全面了解CaCO3基修改在土壤修复中的有效性.

关键词:

亚是一种.领导领导领导领导领导钢笔的外,钢笔的外.土壤整治土壤整治土壤整治稳定化稳定化稳定化

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