Partially coated TiO2 on Al2O3 membrane for high water flux and photodegradation by novel filtration strategy in photocatalytic membrane reactors

Rizwan Ahmad; Chang Soo Lee; Jong Hak Kim; Jeonghwan Kim

doi:10.1016/j.cherd.2020.08.027

Partially coated TiO₂ on Al₂O₃ membrane for high water flux and photodegradation by novel filtration strategy in photocatalytic membrane reactors

Rizwan Ahmad, Chang Soo Lee, Jong Hak Kim, Jeonghwan Kim

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Partially coated TiO₂ (pc-TiO₂) layer on the porous Al₂O₃ membrane substrate was developed by using low-cost poly (vinyl chloride) (PVC) to generate interstitial voids to be applied in a photocatalytic membrane reactor for the treatment of organic dye contaminant. The combination of dead-end filtration with cross-flow filtration under intermittent UV irradiation onto a developed composite ceramic membrane was suggested to reduce the membrane fouling effectively. Our study showed that the water flux and anti-fouling properties of the pc-TiO₂/Al₂O₃ composite membrane was much higher than those of uniformly coated TiO₂ (uc-TiO₂)/Al₂O₃. Cross-flow membrane filtration provided a much greater synergistic impact on photocatalytic activity for both uc- and pc-TiO₂/Al₂O₃ composite membranes than Al₂O₃ bare membrane substrate. Less fouling caused by hydrodynamic shear along the membrane surface is thought to be associated with better accessibility of UV irradiation by the reactive surface of the TiO₂/Al₂O₃ composite membrane, promoting the photodegradation of the organic dye contaminant in water filtration.

Original language	English
Pages (from-to)	138-148
Number of pages	11
Journal	Chemical Engineering Research and Design
Volume	163
DOIs	https://doi.org/10.1016/j.cherd.2020.08.027
Publication status	Published - 2020 Nov

Bibliographical note

Funding Information:
This study was supported by the Development program to Minimizing of Climate Change Impact Technology through the National Research Foundation of Korea (NRF), funded by the Korean government (Ministry of Science and ICT(MSIT)) (NRF2020M3H5A1081109)

Funding Information:
This study was supported by the Development program to Minimizing of Climate Change Impact Technology through the National Research Foundation of Korea (NRF), funded by the Korean government (Ministry of Science and ICT(MSIT) ) ( NRF2020M3H5A1081109 )

Publisher Copyright:
© 2020 Institution of Chemical Engineers

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)

Access to Document

10.1016/j.cherd.2020.08.027

Cite this

@article{4dd8d91280224c068fc8a7f10936f047,

title = "Partially coated TiO2 on Al2O3 membrane for high water flux and photodegradation by novel filtration strategy in photocatalytic membrane reactors",

abstract = "Partially coated TiO2 (pc-TiO2) layer on the porous Al2O3 membrane substrate was developed by using low-cost poly (vinyl chloride) (PVC) to generate interstitial voids to be applied in a photocatalytic membrane reactor for the treatment of organic dye contaminant. The combination of dead-end filtration with cross-flow filtration under intermittent UV irradiation onto a developed composite ceramic membrane was suggested to reduce the membrane fouling effectively. Our study showed that the water flux and anti-fouling properties of the pc-TiO2/Al2O3 composite membrane was much higher than those of uniformly coated TiO2 (uc-TiO2)/Al2O3. Cross-flow membrane filtration provided a much greater synergistic impact on photocatalytic activity for both uc- and pc-TiO2/Al2O3 composite membranes than Al2O3 bare membrane substrate. Less fouling caused by hydrodynamic shear along the membrane surface is thought to be associated with better accessibility of UV irradiation by the reactive surface of the TiO2/Al2O3 composite membrane, promoting the photodegradation of the organic dye contaminant in water filtration.",

author = "Rizwan Ahmad and Lee, {Chang Soo} and Kim, {Jong Hak} and Jeonghwan Kim",

note = "Funding Information: This study was supported by the Development program to Minimizing of Climate Change Impact Technology through the National Research Foundation of Korea (NRF), funded by the Korean government (Ministry of Science and ICT(MSIT)) (NRF2020M3H5A1081109) Funding Information: This study was supported by the Development program to Minimizing of Climate Change Impact Technology through the National Research Foundation of Korea (NRF), funded by the Korean government (Ministry of Science and ICT(MSIT) ) ( NRF2020M3H5A1081109 ) Publisher Copyright: {\textcopyright} 2020 Institution of Chemical Engineers",

year = "2020",

month = nov,

doi = "10.1016/j.cherd.2020.08.027",

language = "English",

volume = "163",

pages = "138--148",

journal = "Chemical Engineering Research and Design",

issn = "0263-8762",

publisher = "Institution of Chemical Engineers",

}

TY - JOUR

T1 - Partially coated TiO2 on Al2O3 membrane for high water flux and photodegradation by novel filtration strategy in photocatalytic membrane reactors

AU - Ahmad, Rizwan

AU - Lee, Chang Soo

AU - Kim, Jong Hak

AU - Kim, Jeonghwan

N1 - Funding Information: This study was supported by the Development program to Minimizing of Climate Change Impact Technology through the National Research Foundation of Korea (NRF), funded by the Korean government (Ministry of Science and ICT(MSIT)) (NRF2020M3H5A1081109) Funding Information: This study was supported by the Development program to Minimizing of Climate Change Impact Technology through the National Research Foundation of Korea (NRF), funded by the Korean government (Ministry of Science and ICT(MSIT) ) ( NRF2020M3H5A1081109 ) Publisher Copyright: © 2020 Institution of Chemical Engineers

PY - 2020/11

Y1 - 2020/11

N2 - Partially coated TiO2 (pc-TiO2) layer on the porous Al2O3 membrane substrate was developed by using low-cost poly (vinyl chloride) (PVC) to generate interstitial voids to be applied in a photocatalytic membrane reactor for the treatment of organic dye contaminant. The combination of dead-end filtration with cross-flow filtration under intermittent UV irradiation onto a developed composite ceramic membrane was suggested to reduce the membrane fouling effectively. Our study showed that the water flux and anti-fouling properties of the pc-TiO2/Al2O3 composite membrane was much higher than those of uniformly coated TiO2 (uc-TiO2)/Al2O3. Cross-flow membrane filtration provided a much greater synergistic impact on photocatalytic activity for both uc- and pc-TiO2/Al2O3 composite membranes than Al2O3 bare membrane substrate. Less fouling caused by hydrodynamic shear along the membrane surface is thought to be associated with better accessibility of UV irradiation by the reactive surface of the TiO2/Al2O3 composite membrane, promoting the photodegradation of the organic dye contaminant in water filtration.

AB - Partially coated TiO2 (pc-TiO2) layer on the porous Al2O3 membrane substrate was developed by using low-cost poly (vinyl chloride) (PVC) to generate interstitial voids to be applied in a photocatalytic membrane reactor for the treatment of organic dye contaminant. The combination of dead-end filtration with cross-flow filtration under intermittent UV irradiation onto a developed composite ceramic membrane was suggested to reduce the membrane fouling effectively. Our study showed that the water flux and anti-fouling properties of the pc-TiO2/Al2O3 composite membrane was much higher than those of uniformly coated TiO2 (uc-TiO2)/Al2O3. Cross-flow membrane filtration provided a much greater synergistic impact on photocatalytic activity for both uc- and pc-TiO2/Al2O3 composite membranes than Al2O3 bare membrane substrate. Less fouling caused by hydrodynamic shear along the membrane surface is thought to be associated with better accessibility of UV irradiation by the reactive surface of the TiO2/Al2O3 composite membrane, promoting the photodegradation of the organic dye contaminant in water filtration.

UR - http://www.scopus.com/inward/record.url?scp=85090701097&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85090701097&partnerID=8YFLogxK

U2 - 10.1016/j.cherd.2020.08.027

DO - 10.1016/j.cherd.2020.08.027

M3 - Article

AN - SCOPUS:85090701097

SN - 0263-8762

VL - 163

SP - 138

EP - 148

JO - Chemical Engineering Research and Design

JF - Chemical Engineering Research and Design

ER -