Numerical Simulation of the Electrochemical Chloride Extraction

• Main Authors: Kuo-Hau Ma, 馬國豪
• Other Authors: Wei-chung Yeih
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/92170860209406469377

碩士 === 國立臺灣海洋大學 === 河海工程學系 === 97 === In this study, the migration of chloride ions under applied current is simulated. The model of migration of chloride ions is the Nernst-Plank equation. The modified collocation Trefftz method is used to first calculate the electrical potential distribution, then the radial basis function approximation is used to simulate the spatial distribution of chloride ion concentration. The numerical result is obtained and compared with the experimental data. The results show that the trends for chloride removal predicted from the numerical method is very close to the one from the experimental data. In addition, numerical simulation predicts that the chloride removal efficiency will be enhanced if one increases the anode area and/or the voltage. However, increasing the voltage may result in the increment in temperature due to the Joule’s effect such that many accompanying side-effects may be seen. Therefore, to select an appropriate applied voltage require careful considerations.