Cellulose triacetate/LUDOX‐SiO2 nanocomposite for synthesis of pervaporation desalination membranes
(2020) Journal of Applied Polymer Science — Vol. online, p. 50000 (2020)
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- Authors
Hartanto, Yusak 
Van der Bruggen, Bart
- Abstract
- A series of cellulose triacetate/Ludox-silica nancomposite pervaporation membranes was successfully prepared via solution casting, aiming to improve the performance of cellulose triacetate membranes for desalination. The fabricated nanocomposite membranes were characterized to study the membrane morphology, chemical composition, mechanical properties, and surface hydrophilicity. Furthermore, the desalination performance was investigated as a function of silica (SiO2) loading (ranging from 1 to 4 wt.%) and feed concentration at 30 g/L and 60 g/L of sodium chloride (NaCl). Pervaporation experiments showed that incorporating 4 wt.% SiO2 into a cellulose triacetate (CTA) membrane increased the water flux by a factor 2.5 compared to pristine CTA (from 2.2 kg m-2 h-1 to 6.1 kg m-2 h-1) for a 30 g/L NaCl feed solution at 70°C, while the salt rejection remained above 99 %. The CTA/4 wt.% SiO2 membrane was found to have only 21 % flux reduction when tested with a 60 g/L NaCl feed solution, without changes in membrane selectivity. This suggests that the developed CTA/Ludox-SiO2 nanocomposite pervaporation membrane is suitable for desalination.
- Affiliations
KU Leuven Department of Chemical Engineering Mulawarman University Department of Chemical Engineering Tshwane University of Technology Faculty of Engineering and the Built Environment
Citations
Prihatiningtyas, I., Hartanto, Y., Ballesteros, M. S. R., & Van der Bruggen, B. (2020). Cellulose triacetate/LUDOX‐SiO2 nanocomposite for synthesis of pervaporation desalination membranes. Journal of Applied Polymer Science, online, 50000. https://doi.org/10.1002/app.50000 (Original work published 2020)