相关实验视频
Updated: May 26, 2025

09:50
Electrochemically and Bioelectrochemically Induced Ammonium Recovery
Published on: January 22, 2015
12.7K
在铁阳极辅助的建造湿地中,电化学和微生物的营养消除之间的权衡:电压水平的特异性
Yu Zhang1, Xushun Gu1, Shanshan Sun1
1School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China.
Journal of environmental management
|February 21, 2025
概括
在铁阳极辅助建造湿地 (IACWs) 中优化电压水平可以提高营养物质的去除. 一个5V设置平衡电化学和微生物过程,以持续去除和有效减少.
科学领域:
- 环境工程 环境工程
- 电化学 电化学 电化学
- 微生物学 微生物学
背景情况:
- 建筑湿地对于废水处理至关重要.
- 了解电催化和微生物相互作用是优化性能的关键.
- 电压水平 (VL) 是铁阳极辅助建造湿地 (IACW) 中研究不足的一个因素.
研究的目的:
- 调查不同电压水平对太阳能驱动IACW中营养物质去除的影响.
- 阐明控制性能的电催化和微生物机制.
- 在不同的电压条件下建立性能-路径-社区联系.
主要方法:
- 五个太阳能驱动的IACW在0,1,5,10和15V下运行了109天.
- 在水温中等至低的水中处理的二次废水.
- 分析了总 (TN) 和总 (TP) 的去除效率,电化学贡献和微生物社区/功能.
主要成果:
- 使用VL (0-15V) 提高了TN和TP移除效率.
- 用VL增强了电化学脱,但由于电极问题,在更高VL (≥10V) 时受损.
- 微生物脱达到5V的峰值,较高的VL限制了微生物功能,尽管基因丰富度增加.
- 5V提供了持续TN去除的平衡,而电凝有效地去除了TP.
结论:
- 5V VL是平衡电化学和微生物过程的最佳选择,用于IACW中持续的TN去除.
- VL显著影响IACW中的电催化和微生物机制.
- 本研究提供了一种电压调节策略,用于在低污染废水处理中有效地在现场净化营养物质.
相关概念视频
Voltammetry: Stripping Methods
164
Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
164
Electrolysis
25.9K
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...
25.9K
Electrogravimetric Analysis: Overview
187
Electrogravimetric analysis measures the weight of an analyte deposited electrolytically onto a suitable working electrode. This method involves applying a potential to a pre-weighed electrode submerged in a solution, which results in the desired substance being deposited through reduction at the cathode or oxidation at the anode. The electrode's weight is recorded after deposition, and the difference in weight gives the analyte's weight in the solution.
To test the completeness of the...
To test the completeness of the...
187
Interfacial Electrochemical Methods: Overview
215
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
215
Electrodeposition
567
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
Electrodeposition can...
567
Controlled-Potential Coulometry: Electrolytic Methods
126
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...
126

