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Effect of Membrane Module and Feed Flow Configuration on Performance in Pressure Retarded Osmosis
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 Title & Authors
Effect of Membrane Module and Feed Flow Configuration on Performance in Pressure Retarded Osmosis
Go, Gilhyun; Kim, Donghyun; Park, Taeshin; Kang, Limseok;
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 Abstract
Recently, reverse osmosis (RO) is the most common process for seawater desalination. A common problem in both RO and thermal processes is the high energy requirements for seawater desalination. The one energy saving method when utilizing the osmotic power is utilizing pressure retarded osmosis (PRO) process. The PRO process can be used to operate hydro turbines for electrical power production or can be used directly to supplement the energy required for RO desalination system. This study was carried out to evaluate the performance of both single-stage PRO process and two-stage PRO process using RO concentrate for a draw solution and RO permeate for a feed solution. The major results, were found that increase of the draw and feed solution flowrate lead to increase of the production of power density and water permeate. Also, comparison between CDCF and CDDF configuration showed that the CDDF was better than CDCF for stable operation of PRO process. In addition, power density of two-stage PRO was lower than the one of single-stage. However, net power of two-stage PRO was higher than the one of single-stage PRO.
 Keywords
Net power;Power density;Pressure retarded osmosis;SWRO-PRO;Two-stage PRO;
 Language
Korean
 Cited by
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