Abstract
Separation performance was measured for the disc plate and frame type reverse osmosis module using NaCl and sucrose solutions. An analysis of membrane performance was done following the equations proposed by Kimura-Sourirajan[8]. The membrane permeability was $2.17 \times 10^{-6}$(gmol/$cm^2$-sec-bar) and independent of operating pressure. The effect of concentration polarization for sucrose solution was higher than that of NaCl. Permeation flux for sucrose solution above 40 bar was decreased as operating pressure was increased. Solute rejection for NaCl solution was decreased, but that of sucrose was increased as operating pressure was increased.
NaCl과 sucrose 용액을 역삼투용 워난틀형 모듈에 공겁하여 투과실험하였으며 Kimura-Sourirajan[8]이 제안한 방법으로 분리성능을 분석하였다. 사용한 분리막의 순수투과계수는 압력에 무관하게 $2.17 \times 10^{-6}$(gmol/$cm^2$-sec-bar)로 일정하게 유지되었다. Sucrose 용액의 농도분극화 현상은 NaCl 용액보다 심각하였으며 40bar 이상에서는 압력이 증가함에 따라서 오히려 투과선속이 감소하였다. 용질 배제율은 NaCl 수용액의 경우 압력이 증가함에 따라서 감소하였으나 sucrose 수용액의 경우는 압력에 따라서 배제율도 증가하였다.
