| 초록 |
PressureRetarded Osmosis (PRO) is one of membrane processes for harvesting renewableenergy. In PRO process, membrane fouling phenomena, accumulation of variouscontaminants on membrane surface, is serious issue since it reduces process efficiency.Biofouling, membrane contamination by microorganisms in water, has known as themost severe fouling factor in most of membrane processes. However, there is alack of biofouling study in PRO process until now. In this study, effect ofbiofouling in PRO process was investigated. Pseudomonasaeruginosa (PA01) was used as model microorganism. Biofouling effect wasinvestigated by changing process conditions such as applied hydraulic pressure,membrane material, and initial bacteria concentration. Effect of biofouling wasanalyzed by performance of the membrane expressed as permeate flux, biofilmcell concentration on membrane surface, and confocal laser scanning microscopy(CLSM) image. |
