Experimental investigation of operating parameters in power generation by lab-scale reverse electro-dialysis (RED)

Title
Experimental investigation of operating parameters in power generation by lab-scale reverse electro-dialysis (RED)
Authors
남석우한종희김형준장종현헨켄스마이어디억유성종김진영이소영최인수한준영
Keywords
Reverse electro-dialysis
Issue Date
2016-07
Publisher
Bulletin of the Korean Chemical Society
Citation
VOL 37, NO 7-1019
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/66482
ISSN
0253-2964
Appears in Collections:
KIST Publication > Article
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