Effect of backwash temperature on hollow fiber ultrafiltration membranes fouled by sodium alginate. Issue 8 (13th February 2016)

• Record Type: Journal Article
• Authors: Ren, Jiawei; Li, Xing; Yang, Yanling; Liu, Yongwang; Zhou, Zhiwei; Ji, Siyang
• Is Part Of: Desalination and water treatment. Volume 57:Issue 8(2016)
• Page Start: 3350
• Page End: 3357
• Publication Date: 2016-02-13
• Subjects: Ultrafiltration -- Sodium alginate -- Backwash temperature -- Hollow fiber membrane -- Total backwash resistance; Saline water conversion -- Periodicals; Saline water conversion; Water -- Purification; Periodicals; 628.167
• DOI: 10.1080/19443994.2014.986206
• Languages: English
• ISSNs: 1944-3994

Abstract

Abstract: This study focuses on the effect of backwash temperatures (25, 40, and 55°C) on hollow fiber ultrafiltration membranes fouled by sodium alginate (SA). The results indicate that a higher backwash temperature could achieve a significant mitigation of total backwash resistance and a cleaning rate promotion. In the following cycle, the initial total fouling resistance was decreased with the temperature increase, while there was an undesirable increase on the fouling rate due to a higher SA concentration in the membrane pool. Although the membrane fouling resistance was more reversible, backwash at 55°C had a negative impact on the SA removal, because the functional gel layer was washed out. Moreover, all the beneficial effects from 25 to 40°C were more noticeable than those from 40 to 55°C. Overall, backwash at 40°C was relatively a better choice in this study.