化剂对用AlCl3和Al13去除的作用凝血:性能和机制
Ziniu Deng1, An Xu1, Xiaolin Zhang1,2
1State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China.
Environmental science & technology
|February 7, 2025
概括
化剂如EDTA和酸显著阻碍了基化物从工业废水中去除,因为它破坏了花的形成. 聚合 (Al13) 与单体 (AlCl3) 相比,对这些剂的稳定性更好.
科学领域:
- 环境化学环境化学
- 水处理技术水处理技术
- 无机化学 无机化学 有机化学
背景情况:
- 凝固是从工业废水中去除化物的主要方法.
- 基于的脱化疗法的有效性可能会受到常见的化剂的影响.
- 了解这些相互作用对于优化水处理过程至关重要.
研究的目的:
- 为了研究乙烯基二胺三酸 (EDTA) 和酸 (CA) 对使用凝固剂去除的影响.
- 为了比较单体化 (AlCl3) 和聚合体物种 (Al13) 在化剂的存在下产生的效果.
- 阐明合剂引起的干扰背后的机制.
主要方法:
- 进行了凝血实验,以评估化物去除效率.
- 19F/27Al NMR光谱法用于分析复杂的形成.
- 用密度函数理论 (DFT) 的计算来理解热力学稳定性和复杂化.
主要成果:
- EDTA和CA都显著降低了化物去除,CA导致AlCl3.3的100%抑制.
- EDTA和CA通过破坏形成和创建三元 (EDTA-Al-F) 和二元 (Al-CA) 复合体来干扰.
- 与AlCl3相比,聚合物Al13对EDTA的稳定性更强,这归因于桥梁化物形成.
结论:
- 化剂如EDTA和CA对以为基础的脱化构成重大挑战.
- 与单体形式相比,聚合物种 (Al13) 在化剂的存在下提供了更好的稳定性.
- 这些发现为设计有效的基凝固剂和优化工业废水处理以去除化物提供了洞察力.
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