Development of hybrid and templated silica-p123 membranes for brackish water desalination

Muthia Elma and Dwi Rasy Mujiyanti and Noor Maizura Ismail and Muhammad Roil Bilad and Aulia Rahma and Sazila Karina Rahman and Fitriani Fitriani and Arief Rakhman and Erdina Lulu Atika Rampun (2020) Development of hybrid and templated silica-p123 membranes for brackish water desalination. Polymers, 12. pp. 1-12.

Text FULL TEXT.pdf Restricted to Registered users only Download (1MB) | Request a copy

Abstract

Water scarcity is still a pressing issue in many regions. The application of membrane technology through water desalination to convert brackish to potable water is a promising technology to solve this issue. This study compared the performance of templated TEOS-P123 and ES40-P123 hybrid membranes for brackish water desalination. The membranes were prepared by the sol–gel method by employing tetraethyl orthosilicate (TEOS) for the carbon-templated silica (soft template) and ethyl silicate (ES40) for the hybrid organo-silica. Both sols were templated by adding 35 wt.% of pluronic triblock copolymer (P123) as the carbon source. The silica-templated sols were dip-coated onto alumina support (four layers) and were calcined by using the RTP (rapid thermal processing) method. The prepared membranes were tested using pervaporation set up at room temperature (~25 ◦C) using brackish water (0.3 and 1 wt.%) as the feed. It was found that the hybrid membrane exhibited the highest specific surface area (6.72 m² ·g⁻¹), pore size (3.67 nm), and pore volume (0.45 cm³ ·g⁻¹). The hybrid ES40-P123 was twice thicker (2 µm) than TEOS-P123-templated membranes (1 µm). Lastly, the hybrid ES40-P123 displayed highest water flux of 6.2 kg·m⁻² ·h⁻¹. Both membranes showed excellent robustness and salt rejections of >99%.

Item Type:	Article
Keyword:	Mesoporous silica, Rapid thermal processing, Sol–gel process, Brackish water desalination
Subjects:	T Technology > T Technology (General) > T1-995 Technology (General) T Technology > TD Environmental technology. Sanitary engineering > TD1-1066 Environmental technology. Sanitary engineering
Department:	FACULTY > Faculty of Engineering
Depositing User:	SITI AZIZAH BINTI IDRIS -
Date Deposited:	31 Dec 2024 09:19
Last Modified:	31 Dec 2024 09:19
URI:	https://eprints.ums.edu.my/id/eprint/42458

Actions (login required)

View Item