不同水泥类型在固化/稳定铜离子方面的比较有效性和机制
Chuang Yu1, Bing-Sheng Huang2, Xiaoqing Cai3
1College of Civil Engineering and Architecture, Wenzhou University, Wenzhou, 325035, China; College of Environmental Protection, Zhejiang Industry and Trade Vocational College, Wenzhou, 325002, China.
Journal of environmental management
|March 5, 2026
概括
基于钢渣的波特兰水泥 (SSPC) 通过三重机制有效地固定铜离子 (Cu2+),性能优于其他水泥类型. SSPC提供了一种可持续的解决方案,用于重金属的整治利用回收工业废物.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
背景情况:
- 重金属污染对环境构成重大风险.
- 有效的固化/稳定 (S/S) 方法对于危险废物管理至关重要.
- 混凝土材料被广泛用于固定污染物,如铜离子 (Cu2+).
研究的目的:
- 为了比较四种水泥类型在固化/稳定铜离子 (Cu2+) 的有效性.
- 通过不同的水泥矩阵阐明铜离子固定背后的机制.
- 为了确定Cu2+修复的最佳水泥粘合剂.
主要方法:
- 使用简化模型系统使用普通波特兰水泥 (OPC),基于钢渣的波特兰水泥 (SSPC),酸水泥 (CAC) 和酸水泥 (MPC).
- 采用半动态液,毒性特征液程序,不受限制的压力强度,BCR连续提取,SEM-EDS和XRD分析.
- 研究了水泥矩阵和Cu2+之间的内在相互作用.
主要成果:
- SSPC表现出优越的性能,Cu2+漏率微不足道,残留强度高.
- SSPC的有效性归因于物理封装,化学沉和晶格固定.
- OPC表现出可靠的性能,而CAC和MPC分别表现出不稳定性和酸度易感性.
结论:
- 由于其高固定能力,SSPC是Cu2+固化/稳定的最佳粘合剂.
- 该研究为选择重金属修复的水泥材料提供了机械洞察力.
- 通过利用回收的工业固体废物,SSPC提供了一种对环境有益的方法.
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