Effect of Transmembrane Pressure on Antifouling Properties of PVC/Clinoptilolite Ultrafiltration Nanocomposite Membranes. Issue 6 (4th May 2022)

• Record Type: Journal Article
• Authors: Etemadi, Habib; Kazemi, Rozita; Ghasemian, Naser; Shokri, Elham
• Is Part Of: Chemical engineering & technology. Volume 45:Issue 6(2022)
• Page Start: 1192
• Page End: 1200
• Publication Date: 2022-05-04
• Subjects: Antifouling -- Clinoptilolite nanoparticles -- Hydrophilicity -- PVC membranes -- Transmembrane pressure; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.202200097
• Languages: English
• ISSNs: 0930-7516

Abstract

Abstract: Novel polyvinyl chloride (PVC)/clinoptilolite nanocomposite membranes for water treatment were fabricated by non‐solvent‐induced phase separation and characterized with respect to their hydrophilicity, porosity, surface roughness, thermal stability, and surface and cross‐sectional morphology. All prepared membranes were evaluated in a submerged system for the removal of humic acid (HA) under various vacuum transmembrane pressure (TMP) conditions. The hydrophilicity, porosity, and thermal stability of the membranes were increased by the addition of 0.5 wt % clinoptilolite nanoparticles. A larger macrovoid appeared when clinoptilolite nanoparticles were added to the PVC membrane. Higher TMP leads to serious fouling and the formation of a thicker foulant layer on the membrane surface as well as less removal of HA. Abstract : Determination of the optimal transmembrane pressure (TMP) is very important in membrane separation processes. Among the TMP of 0.1, 0.2, and 0.4 bar for polyvinyl chloride (PVC) and PVC/clinoptilolite membranes in a submerged membrane system, 0.1 bar was chosen as the optimal TMP for humic acid removal from contaminated water, due to the low membrane fouling tendency.