期刊
WATER SCIENCE AND TECHNOLOGY
卷 86, 期 7, 页码 1642-1652出版社
IWA PUBLISHING
DOI: 10.2166/wst.2022.262
关键词
copper cathode; current density; energy consumption; geometric factor; mono-polar
This research aimed to study the effect of electrode configuration on the electro-reduction of nitrate. The vertical plate parallel configuration showed superior performance in terms of nitrate removal efficiency, energy consumption, mass transfer coefficients, and rate constants.
Nitrate pollution is a global problem as it affects both the environment and human health. The objective of this research was to study the effect of electrode configuration on the electro-reduction of nitrate. Coaxial cylindrical (inner rod and outer tube copper cathodes) and vertical plate parallel copper cathodes paired with Ti/RuO2-IrO2 (rod, tube, and plate) configurations were studied under various current densities and initial nitrate concentrations. The efficiency of each configuration was determined based on the removal efficiency of nitrate, specific energy consumption, mass transfer coefficients, and first order rate constants. Additionally, the overall systems' resistance and geometric factors are discussed. It was found that the performances of the inner rod and outer tube copper cathodes were similar. The vertical plate parallel configuration was superior to the coaxial cylindrical electrode setup, as evident from a higher maximum nitrate removal of 74 and 56% at a current density of 7 mA/cm(2) and lower energy consumption of 46.7 x 10(-3) and 54.3 x 10(-3) kWh/mmol NO3- at 36.4 mA/cm(2), respectively. In addition, the mass transfer coefficients and first order rate constants were higher in all conditions tested for the vertical plate parallel configuration.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据