通过活性处理木灰和高炉渣渣处理:微量元素固化和复合材料应用
Shayan S Narani1, Sumi Siddiqua2, Priyadharshini Perumal3
1School of Engineering, University of British Columbia, Kelowna, BC, V1V 1V7, Canada; Faculty of Applied Science, School of Engineering, University of British Columbia, Kelowna, BC, V1V1V7, Canada.
Journal of environmental management
|February 16, 2024
概括
这项研究开发了从木飞 (PFA) 和渣 (BFS) 制成的活性复合材料,用于可持续的废物管理. 这些材料有效地稳定了大多数重金属,为工业副产品提供了环保的回收解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 可持续化学 可持续化学
背景情况:
- 木材和生物质燃烧产生大量的飞灰 (PFA),这给填埋场带来了挑战.
- 地质颗粒高炉渣 (BFS) 是一种工业副产品,有可能用于复合材料.
- 将PFA和BFS回收成增值产品解决了废物管理问题,并促进了循环经济.
研究的目的:
- 用PFA和BFS研究活性复合材料的制备和性能.
- 评估PFA/BFS比率,性激活剂含量和固化条件对材料性能的影响.
- 评估开发的复合材料的重金属稳定能力和环境安全.
主要方法:
- 关于PFA和BFS的特征.
- 用不同的PFA/BFS比率和模块制备活性复合材料.
- 机械测试 (压力强度,密度).
- 微观结构和化学分析 (FTIR,SEM-EDS).
- 重金属稳定性的评估 (ICP-MS).
主要成果:
- 烤箱和热水固化方法促进早期力量的发展.
- 压缩强度在固化28天后趋同,减少了对能源密集型方法的需求.
- 这些复合材料有效地稳定了As,Cd,Ba,Cr,Pb,Mo,Se,Hg,Sr,Cu和Zn.
- Co和V的稳定性是有限的.
- 较高的PFA含量通过多重凝结增强了危险金属的稳定性.
结论:
- 来自PFA和BFS的活性复合材料为可持续废物回收提供了可行的途径.
- 开发的材料表现出良好的机械性能和有效稳定广泛的重金属.
- 优化PFA含量对于最大限度地使危险金属固定至关重要,有助于环境保护.
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