Long-term stable metal organic framework (MOF) based mixed matrix membranes for ultrafiltration

Anti-fouling; Mixed matrix membranes; Phase inversion method; Polyethersulfone membrane; UiO-66 and UiO-66-NH2; Anti-foulings; Membrane performance; Metal-organic-frameworks; Mixed-matrix membranes; Phase-inversion method; Poly(ether sulfone); Polyethersulphones; Water contacts; Biochemistry; Materials Science (all); Physical and Theoretical Chemistry; Filtration and Separation; General Materials Science

Abstract :

[en] In this study, novel mixed matrix membranes (MMMs) were synthesised by adding metal organic frameworks (MOFs) (UiO-66 and UiO-66-NH2) to pristine and sulfonated polyethersulfone (PES). The differing synthetic method resulting in MMM where additives were grafted to the matrix polymer, or formed a natural interface, allowing the impact of these MMM features to be investigated. The composite membranes were characterised by FTIR, PXRD, water contact angle, porosity, pore size, etc. Membrane performance was investigated by water permeation flux, flux recovery ratio, fouling resistance and anti-fouling performance. The stability test was also conducted for all the prepared mixed matrix membranes. A higher reduction in the water contact angle was observed after adding both MOFs to the PES and sulfonated PES membranes compared to pristine PES membranes. An enhancement in membrane performance was observed by embedding the MOFs into PES membrane matrix, with flux increased remarkably (565 LMH for PES+UiO-66-NH2 at 5% loading and 487.1 LMH for SPES-UiO-66(10% binding) while the BSA rejection was still kept at a high level. By adding the MOFs into PES matrix, the flux recovery ratio was increased greatly (more than 99% for most mixed matrix membranes). The mixed matrix membranes showed higher resistance to protein adsorption compared to pristine PES membranes. After immersing the membranes in water for 3 months, 6 months and 12 months, both MOFs were stable and retained their structure. This study indicates that UiO-66 and UiO-66-NH2 are great candidates for designing long-term stable mixed matrix membranes (MMMs) for applications in water and wastewater treatment.

Disciplines :

Chemical engineering

Author, co-author :

Al-Shaeli, Muayad ; Monash University, Department of Chemical Engineering, Clayton, Australia

Smith, Stefan J.D.; Monash University, Department of Chemical Engineering, Clayton, Australia ; CSIRO, Clayton South MDC, Australia

Jiang, Shanxue; Barrer Centre, Department of Chemical Engineering, Imperial College London, London, United Kingdom

Wang, Huanting; Monash University, Department of Chemical Engineering, Clayton, Australia

Zhang, Kaisong; Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China

LADEWIG, Bradley Paul ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) ; Barrer Centre, Department of Chemical Engineering, Imperial College London, London, United Kingdom ; Institute for Micro Process Engineering (IMVT), Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, Germany

External co-authors :

yes

Language :

English

Title :

Long-term stable metal organic framework (MOF) based mixed matrix membranes for ultrafiltration

Publication date :

October 2021

Journal title :

Journal of Membrane Science

ISSN :

0376-7388

eISSN :

1873-3123

Publisher :

Elsevier B.V.

Volume :

635

Pages :

119339

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://api.elsevier.com/content/article/PII:S0376738821002775?httpAccept=text/xml

Available on ORBilu :

since 15 January 2024

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