Effect of design and operating parameters on power generation in reverse electrodialysis (RED): experimental analysis and modeling
Desalination and Water Treatment, ISSN: 1944-3986, Vol: 191, Page: 29-39
2020
- 5Citations
- 18Captures
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Article Description
This paper investigated the effect of key parameters such as the number of cell pairs, flow rate, temperature, and salt concentration on the power output characteristics of a reverse electrodialysis (RED) system. Experiments were carried out to measure the open-circuit voltage (OCV) and maximum power (P max ) in a bench-scale RED system. The Nernst–Plank flux equations, together with the Donnan equilibrium relations and the electrical neutrality condition, were used to interpret experiments values. Results showed that the OCV and P max increased with an increase in the number of cell pairs and temperature. Using 20 cell pairs, the OCV and P max were 2.75 V and 1.4 W/m 2, respectively. The flow rate affected the OCV and P max but also led to an increase in the pressure drop in the RED stack. Thus, the flow rate was suggested to be 60 mL/min with the use of 20 cell pairs in our system. The OCV and P max were higher at a higher salinity difference between the high salinity and low salinity solutions. Nevertheless, the OCV and P max were smaller at a higher salt concentration even if the salinity gradient between the high and low salinity solutions were the same.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S1944398624074836; http://dx.doi.org/10.5004/dwt.2020.25265; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85098702599&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S1944398624074836; https://dx.doi.org/10.5004/dwt.2020.25265; https://www.deswater.com/DWT_abstracts/vol_191/191_2020_29.pdf
Elsevier BV
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