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- Title
Rotating Disk-Assisted Cross-Flow Ultrafiltration of Sugar Beet Juice.
- Authors
Zhu, Zhenzhou; Mhemdi, Houcine; Zhang, Wenxiang; Ding, Luhui; Bals, Olivier; Jaffrin, Michel; Grimi, Nabil; Vorobiev, Eugène
- Abstract
Rotating disk module (RDM)-assisted cross-flow ultrafiltration of sugar beet juice, obtained by cold pulsed electric field-assisted pressing, was studied in full recycling and concentration modes. Results of trans-membrane pressure (TMP) stepping tests with 10- and 50-kDa membranes showed that filtration flux increased with rotation speed and TMP until 1000 rpm and 4 bar. A slight variation of filtration purity was observed for a rotation speed range of 0-2500 rpm. A TMP increase resulted in purity reduction due to the formation of thicker fouling layer. A full recycling test study with a 10-kDa membrane confirmed the influence of TMP and rotation speed on filtration flux. A rotation speed of 1000 rpm and a TMP of 4 bar were selected for sugar beet juice purification, by concentrating juice from 13 to 1 L. The results of concentration mode tests revealed that, with a 10-kDa membrane, the filtrate purity could reach 95.6 ± 0.5 %, which was comparable to the purity of sugar beet juice purified by conventional liming-carbonation method. The flux decline in cross-flow filtration was still important, justifying more effective anti-fouling technologies investigation.
- Subjects
SUGAR beets; FRUIT juices; ULTRAFILTRATION; ROTATING disks; ELECTRIC fields; FOULING
- Publication
Food & Bioprocess Technology, 2016, Vol 9, Issue 3, p493
- ISSN
1935-5130
- Publication type
Article
- DOI
10.1007/s11947-015-1644-3