在反应性素物种启动的氨氧化中阐明溶解效应
Weijian Duan1, Haojun Ma1, Wuwei Wang1
1The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
通过了解溶解效应,可以改善水处理中的氨 (NH4+) 去除. 基于的氧化剂和甲醇增强了氨氧化,与不同,提供了更好的水处理策略.
科学领域:
- 环境化学环境化学
- 水处理技术水处理技术
- 氧化机制 氧化机制
背景情况:
- 断点化是去除氨的常见方法,但在酸性条件下效率低下.
- 质子诱导的氨氧化抑制的确切原因尚不清楚.
- 了解氨与氧化剂的相互作用对于优化水处理至关重要.
研究的目的:
- 为了研究氨 (NH4+) 化对反应性素物种 (RHS) 启动的氧化的影响.
- 阐明氨去除中的质子诱导抑制背后的机制.
- 在水处理中探索增强氨氧化的替代方法.
主要方法:
- 对溶解的实验和理论分析.
- 使用不同素物种 (与) 的氧化效率的比较.
- 用现场反应性素物种生成的电化学实验.
主要成果:
- 氨的溶解作为一种保护性屏障,阻碍氧化剂的进入,特别是在酸性pH下.
- 基于的氧化剂 (HBrO/BrO-) 比基于的氧化剂 (HClO/ClO-) 更有效,因为它们能更好地破坏溶解层.
- 添加甲醇减轻了溶解,提高了反应性和氧化率.
- 使用NaBr的电化学系统与NaCl相比,显示出更好的氨-N去除能力.
- 使用基于NaBr的电化学方法实现了同时氧化氨和复制铜.
结论:
- 氨溶解显著影响其通过反应性素物种的氧化.
- 选择氧化剂和使用甲醇等添加剂对于有效的氨去除至关重要.
- 使用化物的电化学氧化为废水处理提供了一种有前途的双重功能方法,包括同时去除污染物和回收资源.
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