Application of dead-end ultrafiltration and hollow fibre transverse vibration systems as pre-treatment for the valorisation of bioethanol dunder

Cooper, J; Ye, Y; Razmjou, A; Chen, V

Application of dead-end ultrafiltration and hollow fibre transverse vibration systems as pre-treatment for the valorisation of bioethanol dunder

Cooper, J Ye, Y Razmjou, A Chen, V

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Journal of Membrane Science, 2020, 597
Issue Date:: 2020-03-01

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Field	Value	Language
dc.contributor.author	Cooper, J
dc.contributor.author	Ye, Y
dc.contributor.author	Razmjou, A
dc.contributor.author	Chen, V
dc.date.accessioned	2021-02-16T19:38:56Z
dc.date.available	2021-02-16T19:38:56Z
dc.date.issued	2020-03-01
dc.identifier.citation	Journal of Membrane Science, 2020, 597
dc.identifier.issn	0376-7388
dc.identifier.issn	1873-3123
dc.identifier.uri	http://hdl.handle.net/10453/146148
dc.description.abstract	© 2019 Elsevier B.V. Valorisation of high-strength molasses spentwash (biodunder) was investigated using two-stage membrane processing for the recovery of moderate-to-high value organic acids. Conventional techniques relying on precipitation are often problematic, consuming large volumes of chemicals and have poor selectivity within complex sample matrices. Both stirred-cell and hollow fibre transverse vibration systems were compared and assessed in terms of transmembrane pressure stability, dissolved organic matter (DOM) fractionation, organic acid separation and fouling reversibility during long-term operation. For the same membrane material and effluent dilution (10 fold), stirred cell filtration with a UF 30 kDa membrane revealed a critical flux (Jcritical) value of about 6.2 L/m2h, markedly lower than that obtained with a larger MWCO (UF 100 kDa) counterpart wherein Jcritical was situated around 12.7 L/m2h. On the contrary, transverse vibration of submerged hollow fibres demonstrated a greater tenacity to withstand more aggressive feed solutions (i.e. 5 and 2 fold dilution) even at fluxes above Jcritical, coupled with almost 60% restoration of membrane resistance by simple deionised water rinsing following 6.5 h of constant flux filtration. Size exclusion chromatography (LC-OCD) findings highlight considerable rejection of biopolymers (proteins and polysaccharides) in addition to humic, building block and LMW neutrals content of the effluent DOM. Importantly, HPLC analyses indicated the transmission of selected moderate-to-high value organic acids was greatest during submerged hollow fibre vibration with minimal (5 fold) effluent dilution. Further concentration via nanofiltration suggested almost 80% transmission of succinic acid during the polishing of UF permeate. Recovery of such constituents may contribute to substantially improve the economic viability of bioethanol production.
dc.language	English
dc.publisher	ELSEVIER
dc.relation.ispartof	Journal of Membrane Science
dc.relation.isbasedon	10.1016/j.memsci.2019.117637
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	03 Chemical Sciences, 09 Engineering
dc.subject.classification	Chemical Engineering
dc.title	Application of dead-end ultrafiltration and hollow fibre transverse vibration systems as pre-treatment for the valorisation of bioethanol dunder
dc.type	Journal Article
utslib.citation.volume	597
utslib.for	090405 Non-automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels)
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
dc.date.updated	2021-02-16T19:38:14Z
pubs.publication-status	Published
pubs.volume	597

Abstract:

© 2019 Elsevier B.V. Valorisation of high-strength molasses spentwash (biodunder) was investigated using two-stage membrane processing for the recovery of moderate-to-high value organic acids. Conventional techniques relying on precipitation are often problematic, consuming large volumes of chemicals and have poor selectivity within complex sample matrices. Both stirred-cell and hollow fibre transverse vibration systems were compared and assessed in terms of transmembrane pressure stability, dissolved organic matter (DOM) fractionation, organic acid separation and fouling reversibility during long-term operation. For the same membrane material and effluent dilution (10 fold), stirred cell filtration with a UF 30 kDa membrane revealed a critical flux (Jcritical) value of about 6.2 L/m2h, markedly lower than that obtained with a larger MWCO (UF 100 kDa) counterpart wherein Jcritical was situated around 12.7 L/m2h. On the contrary, transverse vibration of submerged hollow fibres demonstrated a greater tenacity to withstand more aggressive feed solutions (i.e. 5 and 2 fold dilution) even at fluxes above Jcritical, coupled with almost 60% restoration of membrane resistance by simple deionised water rinsing following 6.5 h of constant flux filtration. Size exclusion chromatography (LC-OCD) findings highlight considerable rejection of biopolymers (proteins and polysaccharides) in addition to humic, building block and LMW neutrals content of the effluent DOM. Importantly, HPLC analyses indicated the transmission of selected moderate-to-high value organic acids was greatest during submerged hollow fibre vibration with minimal (5 fold) effluent dilution. Further concentration via nanofiltration suggested almost 80% transmission of succinic acid during the polishing of UF permeate. Recovery of such constituents may contribute to substantially improve the economic viability of bioethanol production.

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http://hdl.handle.net/10453/146148