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In this study, colloidal fouling behavior in pressure retarded osmosis (PRO) was systematically investigated in terms of the effects of draw solution concentration, applied hydraulic pressure at the draw side, feed solution pH, and particle size. Commercially-available cellulose triacetate (CTA) membranes were fouled with feed solution containing silica colloidal particles. Two different silica particles...
Forward osmosis (FO) has been considered a novel technology for desalination. However, one of the major problems is permeate flux decline by fouling. This paper investigates the mitigation of calcium sulfate (CaSO 4 ) and colloidal (particulate) fouling in FO process by application of ultrasound (and/or pressure). Saturated CaSO 4 solution of 2000mg/L and silica (SiO 2 ) colloid...
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