| Autor: |
Elma, Muthia, Septyaningrum, Lilis, Rahmawati, Rahma, Aulia |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2711 Issue 1, p1-7, 7p |
| Abstrakt: |
Tetraethyl orthosilicate-methytriethoxysilane (TEOS-MTES) was successfully fabricated in this work to be applied in desalination. The aim of this work is to investigate xerogel deconvolution and membrane performance of TEOS-MTES under air and vacuum calcination for processing seawater salt solution (3.5% NaCl) via pervaporation. TEOS as silica precursor, nitric acid, and ammonia as dual acid-based catalysts were mixed by sol-gel process. The xerogels were calcined at 350 0C for 1 h under air and vacuum conditions, subsequently, xerogels were characterized via Fourier-Transform infrared spectrometer (FTIR). Fityk software was used to deconvolute the peak area in the FTIR. Whereas the membrane is dip-coated up to 4 times to be obtained 4 layers. The performance is tested through pervaporation at 25 °C feed temperature. Results show all MTES xerogels have carbon groups, silanol, and siloxane peaks. The organo-silica membrane water flux calcined under vacuum condition has almost 2-fold times higher than air calcination. Furthermore, all the TEOS-MTES showed about 99% of salt rejection. The membrane prepared under vacuum calcination has better performance than air calcination. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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