Assessment of Power Generation by Pressure Retarded Osmosis Process from Spiral-Wound Membrane Pilot-Plant
나권형 모듈을 이용한 압력지연삼투 공정의 에너지생산에 관한 연구

Gil hyun Go, Tae shin Park, Lim seok Kang
2016 Journal of Korean Society of Environmental Engineers  
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
more » ... ferent 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.
doi:10.4491/ksee.2016.38.9.476 fatcat:7z7s3b7mjng7zgiysaab47vvse