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자료유형
학술대회자료
저자정보
Yoontaek Oh (University of Cincinnati) Ji-Hyung Han (Korea Institute of Energy Research) Han-Ki Kim (Korea Institute of Energy Research) Namjo Jeong (Korea Institute of Energy Research) Chan-Soo Kim (Korea Institute of Energy Research) David A. Vermaas (Delft University of Technology) Jin-Soo Park (Sangmyung University) Soryong Chae (University of Cincinnati)
저널정보
한국신재생에너지학회 AFORE AFORE 2021 [초록집]
발행연도
2021.10
수록면
201 - 201 (1page)

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Reverse electrodialysis (RED) technology is an emerging technology that extracts energy from mixing two water streams of different salt concentrations. The higher salinity gradient between water streams and operational stack voltages in RED-based technologies yields higher power production. However, the adverse effects of multivalent ions and irreversible faradaic reactions on the overall process performance are an emerging concern for scale-up reducing power generation efficiency, and potentially producing environmentally harmful chemical species. For instance, water sources containing a high concentration of salts such as reverse osmosis brine, hypersaline lakes, and produced water from hydraulic fracturing could be considered feed streams to enhance energy production in RED-based technologies. However, these water sources contain NaCl and various multivalent ions, which are likely to increase the electrical resistance of ion exchange membranes (IEMs) and potentially decrease power generation. Moreover, a high stack voltage that is much higher than that needed for water electrolysis will occur in a scaled-up system. However, there is a critical knowledge gap in the fundamental understanding of the effects of multivalent ions and operational stack voltages in RED-based technologies on irre ... 전체 초록 보기

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