Single bubble probe atomic force microscope and impinging-jet technique unravel the interfacial interactions controlled by long chain fatty acid in anaerobic digestion.

Duan, J-L; Han, Y; Feng, L-J; Ma, J-Y; Sun, X-D; Liu, X-Y; Geng, F-S; Jiang, J-L; Liu, M-Y; Sun, Y-C; Peu, P; Ni, B-J; Yuan, X-Z

Single bubble probe atomic force microscope and impinging-jet technique unravel the interfacial interactions controlled by long chain fatty acid in anaerobic digestion.

Duan, J-L Han, Y Feng, L-J Ma, J-Y Sun, X-D Liu, X-Y Geng, F-S Jiang, J-L Liu, M-Y Sun, Y-C Peu, P Ni, B-J Yuan, X-Z

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Publisher:: PERGAMON-ELSEVIER SCIENCE LTD
Publication Type:: Journal Article
Citation:: Water Res, 2023, 231, pp. 119657
Issue Date:: 2023-03-01

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Field	Value	Language
dc.contributor.author	Duan, J-L
dc.contributor.author	Han, Y
dc.contributor.author	Feng, L-J
dc.contributor.author	Ma, J-Y
dc.contributor.author	Sun, X-D
dc.contributor.author	Liu, X-Y
dc.contributor.author	Geng, F-S
dc.contributor.author	Jiang, J-L
dc.contributor.author	Liu, M-Y
dc.contributor.author	Sun, Y-C
dc.contributor.author	Peu, P
dc.contributor.author	Ni, B-J
dc.contributor.author	Yuan, X-Z
dc.date.accessioned	2024-04-11T07:14:44Z
dc.date.available	2023-01-22
dc.date.available	2024-04-11T07:14:44Z
dc.date.issued	2023-03-01
dc.identifier.citation	Water Res, 2023, 231, pp. 119657
dc.identifier.issn	0043-1354
dc.identifier.issn	1879-2448
dc.identifier.uri	http://hdl.handle.net/10453/177762
dc.description.abstract	Anaerobic digestion of lipid-rich wastewater generally suffers from foaming induced by long chain fatty acid (LCFA). However, a systematic understanding of LCFA inhibition, especially the physical inhibition on interfacial interaction still remains unclear. Here, we combined bubble probe atomic force microscope and impinging-jet technique to unravel the interfacial interactions controlled by long chain fatty acids in anaerobic digestion. We showed that LCFA had a significant inhibition on methane production in anaerobic reactors for the inhibition of the conversion of VFAs to methane. By measuring the LCFA influence on methanogenic archaea Methanosarcina acetivorans C2A, the results demonstrated that methanogenesis was limited for substrates utilization but not metabolic pathways. The impinging-jet technique results indicated that LCFA enhanced bubble separation from anaerobic granules and reduced the bubble-bubble coalescence probability. In addition, the bubble probe atomic force microscope (AFM) revealed that LCFA enhanced the adhesion force between bubbles by enhancing electrical double layer (EDL) repulsion and decreasing hydrophobic interactions. Overall, these results complement framework of LCFA inhibition in anerobic digestion and provide a nanomechanical insight into the fundamental interfacial interactions related to bubbles in anaerobic reactors.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	PERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartof	Water Res
dc.relation.isbasedon	10.1016/j.watres.2023.119657
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Environmental Engineering
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Fatty Acids
dc.subject.mesh	Wastewater
dc.subject.mesh	Methane
dc.subject.mesh	Bioreactors
dc.subject.mesh	Sewage
dc.subject.mesh	Methane
dc.subject.mesh	Fatty Acids
dc.subject.mesh	Bioreactors
dc.subject.mesh	Sewage
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Wastewater
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Fatty Acids
dc.subject.mesh	Wastewater
dc.subject.mesh	Methane
dc.subject.mesh	Bioreactors
dc.subject.mesh	Sewage
dc.title	Single bubble probe atomic force microscope and impinging-jet technique unravel the interfacial interactions controlled by long chain fatty acid in anaerobic digestion.
dc.type	Journal Article
utslib.citation.volume	231
utslib.location.activity	England
pubs.organisational-group	University of Technology Sydney
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/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access	*
dc.date.updated	2024-04-11T07:14:43Z
pubs.publication-status	Published
pubs.volume	231

Abstract:

Anaerobic digestion of lipid-rich wastewater generally suffers from foaming induced by long chain fatty acid (LCFA). However, a systematic understanding of LCFA inhibition, especially the physical inhibition on interfacial interaction still remains unclear. Here, we combined bubble probe atomic force microscope and impinging-jet technique to unravel the interfacial interactions controlled by long chain fatty acids in anaerobic digestion. We showed that LCFA had a significant inhibition on methane production in anaerobic reactors for the inhibition of the conversion of VFAs to methane. By measuring the LCFA influence on methanogenic archaea Methanosarcina acetivorans C2A, the results demonstrated that methanogenesis was limited for substrates utilization but not metabolic pathways. The impinging-jet technique results indicated that LCFA enhanced bubble separation from anaerobic granules and reduced the bubble-bubble coalescence probability. In addition, the bubble probe atomic force microscope (AFM) revealed that LCFA enhanced the adhesion force between bubbles by enhancing electrical double layer (EDL) repulsion and decreasing hydrophobic interactions. Overall, these results complement framework of LCFA inhibition in anerobic digestion and provide a nanomechanical insight into the fundamental interfacial interactions related to bubbles in anaerobic reactors.

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http://hdl.handle.net/10453/177762