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一个环保的战略,以减少由高酸盐吸收的重金属对环境的风险

Zhongbo Shang¹, Tianming Wang¹, Quanyun Ye²

¹School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, China.

Journal of environmental management

|March 6, 2024

概括

有机酸增加重金属 (HM) 从高酸盐的释放. 和酸有效地使 (Pb2+) 和 (Cd2+) 不动,为HM污染提供了一个环保的整治策略.

科学领域:

环境科学环境科学
地质化学地质化学
土壤科学土壤科学

背景情况:

沉重金属 (HM) 吸附在陶土矿物质上,如高酸盐,在自然环境中很普遍.
低分子量有机酸,如酸 (OA),是高度活跃和广泛的.
了解HM的环境行为及其与土壤成分的相互作用至关重要.

研究的目的:

调查酸 (OA) 对 (Pb2+) 和 (Cd2+) 吸附在高上环境流动性的影响.
评估酸 (CS) 和酸 (MS) 在减轻HM风险方面的有效性和机制.
探索CS和MS作为重金属污染的环保修复剂的潜力.

主要方法:

使用考利尼特,Pb2+,Cd2+和不同度的OA进行吸附和脱附实验.
用不同剂量的酸盐 (CS) 和酸盐 (MS) 处理HM污染的高酸盐.
化学表征技术用于分析HM物种化,再分配和固定化.

主要成果:

氧化显著增加了高酸盐中Pb2+和Cd2+的释放.
CS和MS的添加导致了HM的重新分配,大大减少了自由Pb2+和Cd2+.
CS和MS有效地重新捕获释放的HM,增加不可提取的HM分数并使OA无动于衷.

结论:

氧化酸增强了和在考利尼特上被吸收的环境流动性.
酸和酸是有效的固定HMs和减轻他们的环境风险.
CS和MS提供了一个有希望的环保战略,用于重金属污染环境的整治.

关键词:

衰老的衰老衰老的衰老酸和酸的酸盐和酸的酸.考利尼特 (Kaolinite) 是一种石头.氧化酸是一种氧化酸.在Pb(2+) 和Cd(2+) 之间.

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