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http://dx.doi.org/10.9713/kcer.2022.60.4.525

Performance Evaluation of a Closed-Loop Pressure Retarded Membrane Distillation for Brackish Water Desalination and Power Generation  

Cho, Gyu Sang (School of Chemical Engineering, Chonnam National University)
Lee, Jun-Seo (School of Chemical Engineering, Chonnam National University)
Park, Kiho (School of Chemical Engineering, Chonnam National University)
Publication Information
Korean Chemical Engineering Research / v.60, no.4, 2022 , pp. 525-534 More about this Journal
Abstract
In this study, we investigated the applicability and optimal operating strategy of a closed-loop pressure retarded membrane distillation (PRMD) for brackish water desalination. For effective operation with net power generation, high temperature of heat source over 90 ℃ and feed flow rate at 0.6 kg/s are recommended. At 3 g/L of feed concentration, the average permeate flux and net energy density showed 8.04 kg/m2/hr and 2.56 W/m2, respectively. The average permeate flux and net energy density were almost constant in the range of feed concentration from 1 to 3 g/L. Compared to the case with seawater feed, the PRMD with brackish water feed showed higher average permeate flux and net energy density. Thus, PRMD application using brackish water feed can be more effective than that using seawater feed in terms of power generation.
Keywords
Brackish water desalination; Energy harvesting; Desalination; Process modeling;
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