工程去中心化电解污染,以维持在饮用水中不同含量下持续的生成
Aksana Atrashkevich1, Sergi Garcia-Segura1
1Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287-3005, USA.
Applied catalysis, O, Open
|October 17, 2024
概括
这项研究表明,使用单通流电池中的Ti/RuO2阳极进行现场电可以有效消毒水. 尽管化物度不同,但它保持稳定的含量,提供了一个有前途的分散水处理解决方案.
科学领域:
- 电化学 电化学 电化学
- 水处理 处理水的方法
- 材料科学 材料科学 材料科学
背景情况:
- 分散的水消毒需要有效和可行的方法,如现场电化.
- 关于用于家庭用水消毒的单通流电池系统的研究有限,特别是在不同的化物水平下.
研究的目的:
- 评估用于单通电的阳极材料.
- 研究流量,电流密度和化物度对生产和能源消耗的影响.
- 为了确定一个流量电池是否可以在波动的水化学条件下达到一致的消毒水平.
主要方法:
- 在单通流电池设置中评估了Ti/RuO2,Ti/IrO2和添加的钻石阳极.
- 测量了 (Cl2/HOCl/OCl-),二氧化 (ClO2) 和有毒氧化 (ClO3-, ClO4-) 的产生.
- 分析了交叉速度,电流密度和化物度对系统性能的影响.
主要成果:
- /RuO2阳极表现出优异的生成与最小的有毒副产品的形成.
- 交叉速度显著影响了的产生,而化物度和电流密度则影响了能源消耗.
- 在广泛的化物范围 (50-250 mg L-1) 中实现了稳定的含量 (2-4 mg L-1).
- 能耗较低 (<0.11 Wh L-1),可以有效消毒.
结论:
- Ti/RuO2 是一种非常适合在流电池中进行现场电的阳极.
- 流电池系统有效地管理可变的化物度,以进行一致的水消毒.
- 这项技术显示了推进分散式水处理系统的潜力.
相关概念视频
03:00Electrolysis
26.1K
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
26.1K
01:09Ion-Exchange Chromatography
382
Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
382
01:19Potentiometry: Types of Electrodes
543
Reference electrodes serve as a stable reference point for potentiometric measurements, while indicator and working electrodes react to variations in the composition of a solution.
The Standard Hydrogen Electrode (SHE) is a widely used reference electrode that maintains zero potential across all temperatures. However, its need for a continuous hydrogen gas supply renders it impractical for everyday use.
An alternative to SHE is the Saturated Calomel Electrode (SCE). This electrode features an...
The Standard Hydrogen Electrode (SHE) is a widely used reference electrode that maintains zero potential across all temperatures. However, its need for a continuous hydrogen gas supply renders it impractical for everyday use.
An alternative to SHE is the Saturated Calomel Electrode (SCE). This electrode features an...
543
01:17Controlled-Potential Coulometry: Electrolytic Methods
145
Controlled-potential coulometry, also known as potentiostatic coulometry, employs a three-electrode system in which the working electrode's potential is precisely regulated using a potentiostat. Platinum working electrodes are utilized for positive potentials, while mercury pool electrodes are favored for extremely negative potentials. The platinum counter electrode is separated from the analyte using a membrane or salt bridge to avoid interference in the analysis.
The chosen potential...
The chosen potential...
145