Experimental Investigation of Operating Parameters in Power Generation by Lab‐Scale Reverse Electro‐Dialysis (RED)

Bulletin of the Korean Chemical Society

Jun Young Han¹  Jin Young Kim²  Suk Woo Nam²  Insoo Choi²  Juhn Kim²  So Young Lee²  Dirk Henkensmeier²  Sung Jong Yoo²  Hyoung‐²  Jonghee Han³ 

[1] Division of Energy Engineering Kangwon National University Samcheok 25913 Republic of Korea;Fuel Cell Research Center Korea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea;Green School Korea University Seoul 02841 Republic of Korea

关键词: Reverse electro‐;    dialysis;    Operating parameters;    Salinity;    Rinse solution;    Flow rate;    Power output;   

DOI  :  10.1002/bkcs.10810

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The reverse electro‐dialysis (RED) is a renewable technology to produce electricity by mixing of differently concentrated water. In this study, the authors fabricated lab‐scale RED, and attempted to evaluate the RED performance upon different operating parameters. Firstly, the effect of salinity ratio on the RED performance was examined by varying the concentration of low‐salinity water. The performance was optimized by an increase in open circuit voltage (OCV) and cell resistance with salinity ratio. Individual resistances were analyzed by electrochemical impedance spectroscopy, and their impacts on power output were addressed. Second, the effect of flow rate of salinity solutions was studied, and it was found to affect the concentration polarization in RED. Lastly, the effect of the flow rate of electrode rinse solution was investigated, which increased the ionic shortcut current and decreased boundary layer resistance accordingly. Consequently, estimations on the trends in power output by changing operating parameters were made to determine the effective operation of RED.

【 授权许可】

Unknown