在热电厂中利用生物质燃烧的底层灰来从水性基质中去除
Eva Pertile1, Tomáš Dvorský1, Vojtěch Václavík1
1Department of Environmental Engineering, Faculty of Mining and Geology, VSB-Technical University of Ostrava, 17. listopadu 15/2172, 708 00 Ostrava, Czech Republic.
Molecules (Basel, Switzerland)
|December 17, 2024
概括
生物质底灰有效地从酸性废水中去除. 这种具有成本效益的方法利用了工业用水处理的废物,特别是对于pH值低于2的溶液.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 废物管理 废物管理
背景情况:
- 工业废水通常含有有毒的重金属,如.
- 生物质燃烧产生底层灰,这是一个有潜在的修复应用的废物.
研究的目的:
- 调查生物质底灰作为成本有效的吸收剂的有效性,用于从酸性工业废水中去除.
- 描述底层灰和了解吸附机制和动力学.
主要方法:
- 使用X射线粉碎衍射 (XRD),X射线光 (XRF),福里埃变换红外光谱 (FTIR) 和用能量分散X射线 (SEM-EDX) 扫描电子显微镜对底部灰进行表征.
- 在各种条件下对 (Cd2+) 除去效率的实验研究.
- 吸附过程的动力学和热力学分析.
主要成果:
- 生物质底灰的特征,揭示了它的组成和表面特性.
- 确定了去除的最佳条件.
- 吸附跟随伪二次动力学,表明化学吸附过程.
- 底层灰的性质限制了其使用的高度酸性溶液 (pH < 2).
结论:
- 生物质底灰是一种可行的,低成本的吸附剂,用于从酸性工业废水中去除.
- 该材料的特性使其适用于酸性废水的最终处理阶段.
- 这种方法为废物利用和污染控制提供了一种可持续的方法.
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