Towards improved membrane production: using low-toxicity solvents for the preparation of PEEK nanofiltration membranes

João da Silva  Burgal; Ludmila Peeva; Andrew Livingston

doi:10.1039/c5gc02546j

Towards improved membrane production: using low-toxicity solvents for the preparation of PEEK nanofiltration membranes

João da Silva Burgal, Ludmila Peeva, Andrew Livingston^*

^*Corresponding author for this work

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

57 Citations (Scopus)

Abstract

In this work it is shown that PEEK membranes are "green" from the production point of view when compared with commercial polyimide (PI) based organic solvent nanofiltration (OSN) membranes. Green metrics (E-factor and solvent intensity) and waste cost were used in order to assess the environmental burden of PEEK membranes: the solvent intensity of PEEK membranes is 8.3 vs. 35-224 for PI based membranes, and the waste cost for PEEK membranes is 46 £ kg-1 of polymer vs. 1019 £ kg-1 of polymer (bench scale) and 189 £ kg-1 of polymer (industrial scale) for PI based membranes. Scaling-up of PEEK membranes to spiral-wound modules was successfully achieved with permeances between 0.26 L h-1 m-2 bar-1 and 0.47 L h-1 m-2 bar-1 for THF, and molecular weight cut-offs (MWCO) of ∼300 g mol-1. As a final assessment, the solvent intensity and environmental burden associated with permeating a THF flow of 100 L h-1 using PEEK membranes was also assessed. The results showed a waste cost of 1.4 £ m-2 of membrane, significantly lower than PI based membranes.

Original language	English
Pages (from-to)	2374-2384
Number of pages	11
Journal	Green Chemistry
Volume	18
Issue number	8
DOIs	https://doi.org/10.1039/c5gc02546j
Publication status	Published - 21 Apr 2016
Externally published	Yes

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title = "Towards improved membrane production: using low-toxicity solvents for the preparation of PEEK nanofiltration membranes",

abstract = "In this work it is shown that PEEK membranes are {"}green{"} from the production point of view when compared with commercial polyimide (PI) based organic solvent nanofiltration (OSN) membranes. Green metrics (E-factor and solvent intensity) and waste cost were used in order to assess the environmental burden of PEEK membranes: the solvent intensity of PEEK membranes is 8.3 vs. 35-224 for PI based membranes, and the waste cost for PEEK membranes is 46 £ kg-1 of polymer vs. 1019 £ kg-1 of polymer (bench scale) and 189 £ kg-1 of polymer (industrial scale) for PI based membranes. Scaling-up of PEEK membranes to spiral-wound modules was successfully achieved with permeances between 0.26 L h-1 m-2 bar-1 and 0.47 L h-1 m-2 bar-1 for THF, and molecular weight cut-offs (MWCO) of ∼300 g mol-1. As a final assessment, the solvent intensity and environmental burden associated with permeating a THF flow of 100 L h-1 using PEEK membranes was also assessed. The results showed a waste cost of 1.4 £ m-2 of membrane, significantly lower than PI based membranes.",

author = "Burgal, {Jo{\~a}o da Silva} and Ludmila Peeva and Andrew Livingston",

note = "Funding Information: This work was funded by the Novartis Pharma AG, Massachusetts Institute of Technology sub-award agreement No. 5710002924. The authors would like to acknowledge EPSRC for the financial support under the project EP/J014974/1 entitled Molecular Builders: Constructing Nanoporous Materials. Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2016. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

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N1 - Funding Information: This work was funded by the Novartis Pharma AG, Massachusetts Institute of Technology sub-award agreement No. 5710002924. The authors would like to acknowledge EPSRC for the financial support under the project EP/J014974/1 entitled Molecular Builders: Constructing Nanoporous Materials. Publisher Copyright: © The Royal Society of Chemistry 2016. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

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N2 - In this work it is shown that PEEK membranes are "green" from the production point of view when compared with commercial polyimide (PI) based organic solvent nanofiltration (OSN) membranes. Green metrics (E-factor and solvent intensity) and waste cost were used in order to assess the environmental burden of PEEK membranes: the solvent intensity of PEEK membranes is 8.3 vs. 35-224 for PI based membranes, and the waste cost for PEEK membranes is 46 £ kg-1 of polymer vs. 1019 £ kg-1 of polymer (bench scale) and 189 £ kg-1 of polymer (industrial scale) for PI based membranes. Scaling-up of PEEK membranes to spiral-wound modules was successfully achieved with permeances between 0.26 L h-1 m-2 bar-1 and 0.47 L h-1 m-2 bar-1 for THF, and molecular weight cut-offs (MWCO) of ∼300 g mol-1. As a final assessment, the solvent intensity and environmental burden associated with permeating a THF flow of 100 L h-1 using PEEK membranes was also assessed. The results showed a waste cost of 1.4 £ m-2 of membrane, significantly lower than PI based membranes.

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Towards improved membrane production: using low-toxicity solvents for the preparation of PEEK nanofiltration membranes

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