模拟废水的电化学处理,含有芳香化合物,用-电极处理
Ting Su1, Mengdan Wang2, Bozhou Xianyu2
1School of Chemistry and Chemical Engineering, YuLin University, Yulin, 719000, PR China; Shaanxi Key Laboratory of Low Metamorphic Coal Clean Utilization, Yulin, 719000, PR China; Yulin Engineering Research Center of Coal Chemical Wastewater, Yulin, 719000, PR China.
Chemosphere
|August 26, 2024
概括
氧化物-电极有效降解含有的废水. 使用响应表面方法的优化将总去除率提高到81%.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 电化学 电化学 电化学
背景情况:
- 含有的废水给环境带来了重大挑战.
- 有机化合物的有效降解对于水净化至关重要.
- 开发高效的电催化材料是先进废水处理的关键.
研究的目的:
- 准备和描述用于降解含废水的Co3O4-Ti电极.
- 为了研究准备好的电极的电化学性能和降解效率.
- 使用响应表面方法 (RSM) 优化电催化降解过程.
主要方法:
- 使用化方法合成了Co3O4-Ti电极.
- 扫描电子显微镜 (SEM) 和能量分散式X射线光谱 (EDS) 用于材料表征.
- 循环电压测量 (CV) 评估了电化学性能.
- 使用响应表面方法 (RSM) 来优化降解参数.
主要成果:
- SEM和EDS证实了成功将加载到Ti电极上.
- 电化学分析显示,Co3O4-Ti电极的氧化还原性能得到了提高.
- 最初的降解实验实现了77%的总 (TN) 的去除率.
- 使用RSM的优化条件 (180分钟,0.05M电解质,pH3,400毫克L-1TNP,20mAcm-2) 导致TN去除率达到81%.
- 降解因子的意义确定为pH>初始度>时间>电流密度>电解质度.
结论:
- Co3O4-Ti电极对含有的废水进行电化学降解是有效的.
- 降解过程包括两个阶段:转化为无机和随后的减少.
- 在电极表面产生基 (·OH) 在降解机制中起着关键作用.
- 电化学降解过程是自发的,并且在能量方面有利.
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