Contribution of fouling and gel polarization during ultrafiltration of raw apple juice at industrial scale

摘要: Abstract The flux behavior during the industrial cross-flow ultrafiltration of apple juice in a batch process was modeled using combination fouling and concentration polarization models. It observed that major reduction at beginning end operation due to increasing solute feed tank, respectively. phenomenon analyzed by classical empirical models it shown one has best correlation within less than 0.3% error for each experiment. most significant advantage this model is its ability predict steady flux, while other zero infinite time, which contrary observation. With continued permeation, becomes important back diffusion from membrane surface bulk or controlling. Consequently about 4:53 h after starting operation, corresponding increase 151% initial value, dominant mechanism changes polarization. confirmed every moment actual experimental follows (fouling polarization) predicts lower flux.