Development of low mass-transfer-resistance fluorinated TiO2-SiO2/PVDF composite hollow fiber membrane used for biogas upgrading in gas-liquid membrane contactor

An inorganic-organic fluorinated titania-silica (fTiO2-SiO2)/polyvinylidene fluoride (PVDF) composite membrane was fabricated, via facile in-situ vapor-induced hydrolyzation method followed by hydrophobic modification. This low mass-transfer-resistance membrane, composing of a mesoporous layer depos...

Full description

Saved in:
Bibliographic Details
Main Authors: Xu, Yilin, Lin, Yuqing, Lee, Melanie, Malde, Chandresh, Wang, Rong
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2019
Subjects:
Online Access:https://hdl.handle.net/10356/85344
http://hdl.handle.net/10220/50432
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-85344
record_format dspace
spelling sg-ntu-dr.10356-853442020-09-26T21:58:54Z Development of low mass-transfer-resistance fluorinated TiO2-SiO2/PVDF composite hollow fiber membrane used for biogas upgrading in gas-liquid membrane contactor Xu, Yilin Lin, Yuqing Lee, Melanie Malde, Chandresh Wang, Rong School of Civil and Environmental Engineering Interdisciplinary Graduate School (IGS) Nanyang Environment and Water Research Institute Singapore Membrane Technology Centre Fluorinated TiO2-SiO2 Inorganic/Organic Composite Membrane Engineering::Civil engineering An inorganic-organic fluorinated titania-silica (fTiO2-SiO2)/polyvinylidene fluoride (PVDF) composite membrane was fabricated, via facile in-situ vapor-induced hydrolyzation method followed by hydrophobic modification. This low mass-transfer-resistance membrane, composing of a mesoporous layer deposited onto macroporous substrate, was designed for biogas upgrading in gas-liquid membrane contactor (GLMC) application. The surface hydroxylation was introduced to facilitate the bridging of TiO2-SiO2 nanoparticles and PVDF substrate, which resulted in a more coherent deposition of the fTiO2-SiO2 layer onto the substrate. The surface microstructure was fine-tuned by controlling the amount of doped Si precursor, forming an integrated mesoporous fTiO2-SiO2 layer. The resultant fTiO2-SiO2/PVDF composite hollow fiber membrane exhibited a tighter pore size of ~25 nm and a desired water contact angle of ~124°, which effectively prevented membrane wetting. The CO2 absorption fluxes of 8.0 and 5.6 × 10−3 mol m−2 s−1 were achieved due to the lower mass transfer resistance, by using 1 M of monoethanolamine (MEA) and sodium taurinate as absorbents with a liquid velocity of 0.25 m s−1, respectively. The long-term stability test showed a good integrity between the fTiO2-SiO2 layer and the PVDF substrate after 31-days of GLMC operation. The main benefit is the robust fluorinated inorganic layer which exhibited strong chemical resistance and high hydrophobicity, thus preventing membrane damage and pore wetting. Overall, this work provides an insight into the preparation of high–performance inorganic/organic composite hollow fiber membranes for carbon dioxide (CO2) removal in GLMC application. EDB (Economic Devt. Board, S’pore) Accepted version 2019-11-18T07:47:51Z 2019-12-06T16:02:02Z 2019-11-18T07:47:51Z 2019-12-06T16:02:02Z 2018 Journal Article Xu, Y., Lin, Y., Lee, M., Malde, C., & Wang, R. (2018). Development of low mass-transfer-resistance fluorinated TiO2-SiO2/PVDF composite hollow fiber membrane used for biogas upgrading in gas-liquid membrane contactor. Journal of Membrane Science, 552, 253-264. doi:10.1016/j.memsci.2018.02.016 0376-7388 https://hdl.handle.net/10356/85344 http://hdl.handle.net/10220/50432 10.1016/j.memsci.2018.02.016 en Journal of Membrane Science © 2018 Elsevier B.V. All rights reserved. This paper was published in Journal of Membrane Science and is made available with permission of Elsevier B.V. 39 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Fluorinated TiO2-SiO2
Inorganic/Organic Composite Membrane
Engineering::Civil engineering
spellingShingle Fluorinated TiO2-SiO2
Inorganic/Organic Composite Membrane
Engineering::Civil engineering
Xu, Yilin
Lin, Yuqing
Lee, Melanie
Malde, Chandresh
Wang, Rong
Development of low mass-transfer-resistance fluorinated TiO2-SiO2/PVDF composite hollow fiber membrane used for biogas upgrading in gas-liquid membrane contactor
description An inorganic-organic fluorinated titania-silica (fTiO2-SiO2)/polyvinylidene fluoride (PVDF) composite membrane was fabricated, via facile in-situ vapor-induced hydrolyzation method followed by hydrophobic modification. This low mass-transfer-resistance membrane, composing of a mesoporous layer deposited onto macroporous substrate, was designed for biogas upgrading in gas-liquid membrane contactor (GLMC) application. The surface hydroxylation was introduced to facilitate the bridging of TiO2-SiO2 nanoparticles and PVDF substrate, which resulted in a more coherent deposition of the fTiO2-SiO2 layer onto the substrate. The surface microstructure was fine-tuned by controlling the amount of doped Si precursor, forming an integrated mesoporous fTiO2-SiO2 layer. The resultant fTiO2-SiO2/PVDF composite hollow fiber membrane exhibited a tighter pore size of ~25 nm and a desired water contact angle of ~124°, which effectively prevented membrane wetting. The CO2 absorption fluxes of 8.0 and 5.6 × 10−3 mol m−2 s−1 were achieved due to the lower mass transfer resistance, by using 1 M of monoethanolamine (MEA) and sodium taurinate as absorbents with a liquid velocity of 0.25 m s−1, respectively. The long-term stability test showed a good integrity between the fTiO2-SiO2 layer and the PVDF substrate after 31-days of GLMC operation. The main benefit is the robust fluorinated inorganic layer which exhibited strong chemical resistance and high hydrophobicity, thus preventing membrane damage and pore wetting. Overall, this work provides an insight into the preparation of high–performance inorganic/organic composite hollow fiber membranes for carbon dioxide (CO2) removal in GLMC application.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Xu, Yilin
Lin, Yuqing
Lee, Melanie
Malde, Chandresh
Wang, Rong
format Article
author Xu, Yilin
Lin, Yuqing
Lee, Melanie
Malde, Chandresh
Wang, Rong
author_sort Xu, Yilin
title Development of low mass-transfer-resistance fluorinated TiO2-SiO2/PVDF composite hollow fiber membrane used for biogas upgrading in gas-liquid membrane contactor
title_short Development of low mass-transfer-resistance fluorinated TiO2-SiO2/PVDF composite hollow fiber membrane used for biogas upgrading in gas-liquid membrane contactor
title_full Development of low mass-transfer-resistance fluorinated TiO2-SiO2/PVDF composite hollow fiber membrane used for biogas upgrading in gas-liquid membrane contactor
title_fullStr Development of low mass-transfer-resistance fluorinated TiO2-SiO2/PVDF composite hollow fiber membrane used for biogas upgrading in gas-liquid membrane contactor
title_full_unstemmed Development of low mass-transfer-resistance fluorinated TiO2-SiO2/PVDF composite hollow fiber membrane used for biogas upgrading in gas-liquid membrane contactor
title_sort development of low mass-transfer-resistance fluorinated tio2-sio2/pvdf composite hollow fiber membrane used for biogas upgrading in gas-liquid membrane contactor
publishDate 2019
url https://hdl.handle.net/10356/85344
http://hdl.handle.net/10220/50432
_version_ 1681056917678456832