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http://dx.doi.org/10.4491/KSEE.2016.38.9.476

Assessment of Power Generation by Pressure Retarded Osmosis Process from Spiral-Wound Membrane Pilot-Plant  

Go, Gil hyun (Department of Environmental Engineering, Pukyong National University)
Park, Tae shin (GS E&C)
Kang, Lim seok (Department of Environmental Engineering, Pukyong National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.38, no.9, 2016 , pp. 476-481 More about this Journal
Abstract
Pressure retarded osmosis (PRO) is a quite new technique for power generation using an osmotically driven membrane process. In the PRO process, water permeates through a semipermeable membrane from a low concentration feed solution to a high concentration draw solution due to osmotic pressure. This study carried out to evaluate the performance of the 8 in spiral wound membrane module using reverse osmosis concentrate for a draw solution and reverse osmosis permeate for a feed solution. Three different flowrates of draw and feed solution, such as 2.4 L/min, 5.0 L/min, and 10.0 L/min were used to estimate the power density and water flux under various range of hydraulic pressure differences between 5 bar and 30 bar. In addition, the effects of feed and draw solution concentration, flowrate, and mixing ratio on 8 in spiral wound PRO membrane module performance were investigated in this study. As major results, increases of the draw solution concentration lead to the improvement of power denstiy, and water flux. Also, increase of flowrate resulted in the improvement of power density and water flux. In addition, optimal mixing ratio of draw and feed solution inlet flowrate was found to be 1:1 to attain a maximum power denstiy.
Keywords
Pressure Retarded Osmosis; Water Flux; Power Density; Spiral Wound Module;
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Times Cited By KSCI : 1  (Citation Analysis)
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