Hyperfiltration of Tomato Juice during Long Term High Temperature Testing

Abstract

ABSTRACT A tubular hyperfiltration membrane system was studied with tomato juice in a recirculation mode. Two aromatic polyamide thin film composite membranes (ZF 99) (1.3 m 2 ) were examined. After 52 hr of operation with tomato juice one membrane exhibited a flux of 39.7 Lm −2 hr −1 (72°C, 55.2 bar). Another membrane, after 717 hr, gave a flux of 41 Lm −2 hr −1 (78°C, 41.4 bar) and natural tomato soluble solids (NTSS) rejection of 94 to >98%.