Abstract
The modified polyvinylidene fluoride (PVDF) membranes were fabricated by grafting acrylic acid on the membrane and coating it with titanium dioxide sol. TiO2 sols were prepared using varying precursor volume and solution pH. The TiO2 coated membranes were tested for its photocatalytic property using Reactive Black 5 (RB5) dye and antifouling and self-cleaning properties using 1%BSA solution. FT-IR spectroscopy and contact angles confirmed the presence of polyacrylic acid (PAA) and TiO2 on the membrane surface. The performance of the membranes, evaluated via crossflow filtration experiment, significantly improved as evident in the increase in flux and permeability of modified membranes. The rate of RB5 dye color removal due to immobilized TiO2 follows a pseudo-first-order kinetics. PVDF/PAA/TiO2/pH1.25 exhibited superior photocatalytic property, removing 98.77% of the color in a span of 5h. The resistance study showed that modified membranes have lower total filtration resistance (RT) with PVDF/PAA/TiO2/PH1.25 having the lowest. The performance of fouled membranes flux and transmembrane pressure (TMP) was recovered through UV irradiation, and the highest recovery was demonstrated by PVDF/PAA/TiO2/pH1.25.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Taiwan Institute of Chemical Engineers
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
