An in-situ biochar-enhanced anaerobic membrane bioreactor for swine wastewater treatment under various organic loading rates.

Chen, N; Zhang, X; Du, Q; Wang, H; Wang, Z; Ren, J; Li, H; Guo, W; Ngo, HH

An in-situ biochar-enhanced anaerobic membrane bioreactor for swine wastewater treatment under various organic loading rates.

Chen, N Zhang, X Du, Q Wang, H Wang, Z Ren, J Li, H Guo, W

Ngo, HH

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: J Environ Sci (China), 2024, 146, pp. 304-317
Issue Date:: 2024-12

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Field	Value	Language
dc.contributor.author	Chen, N
dc.contributor.author	Zhang, X
dc.contributor.author	Du, Q
dc.contributor.author	Wang, H
dc.contributor.author	Wang, Z
dc.contributor.author	Ren, J
dc.contributor.author	Li, H
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858
dc.contributor.author	Ngo, HH
dc.date.accessioned	2025-01-02T05:16:39Z
dc.date.available	2024-05-13
dc.date.available	2025-01-02T05:16:39Z
dc.date.issued	2024-12
dc.identifier.citation	J Environ Sci (China), 2024, 146, pp. 304-317
dc.identifier.issn	1001-0742
dc.identifier.issn	1878-7320
dc.identifier.uri	http://hdl.handle.net/10453/182832
dc.description.abstract	A biochar-assisted anaerobic membrane bioreactor (BC-AnMBR) was conducted to evaluate the performance in treating swine wastewater with different organic loading rates (OLR) ranging from 0.38 to 1.13 kg-COD/(m3.d). Results indicated that adding spent coffee grounds biochar (SCG-BC) improved the organic removal efficiency compared to the conventional AnMBR, with an overall COD removal rate of > 95.01%. Meanwhile, methane production of up to 0.22 LCH4/gCOD with an improvement of 45.45% was achieved under a high OLR of 1.13 kg-COD/(m3.d). Furthermore, the transmembrane pressure (TMP) in the BC-AnMBR system was stable at 4.5 kPa, and no irreversible membrane fouling occurred within 125 days. Microbial community analysis revealed that the addition of SCG-BC increased the relative abundance of autotrophic methanogenic archaea, particularly Methanosarcina (from 0.11% to 11.16%) and Methanothrix (from 16.34% to 24.05%). More importantly, Desulfobacterota and Firmicutes phylum with direct interspecific electron transfer (DIET) capabilities were also enriched with autotrophic methanogens. Analysis of the electron transfer pathway showed that the concentration of c-type cytochromes increased by 38.60% in the presence of SCG-BC, and thus facilitated the establishment of DIET and maintained high activity of the electron transfer system even at high OLR. In short, the BC-AnMBR system performs well under various OLR conditions and is stable in the recovery energy system for swine wastewater.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier
dc.relation.ispartof	J Environ Sci (China)
dc.relation.isbasedon	10.1016/j.jes.2024.05.020
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	03 Chemical Sciences, 04 Earth Sciences, 05 Environmental Sciences
dc.subject.classification	Environmental Sciences
dc.subject.classification	34 Chemical sciences
dc.subject.classification	37 Earth sciences
dc.subject.classification	41 Environmental sciences
dc.subject.mesh	Bioreactors
dc.subject.mesh	Animals
dc.subject.mesh	Wastewater
dc.subject.mesh	Charcoal
dc.subject.mesh	Swine
dc.subject.mesh	Waste Disposal, Fluid
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Membranes, Artificial
dc.subject.mesh	Methane
dc.subject.mesh	Animals
dc.subject.mesh	Swine
dc.subject.mesh	Charcoal
dc.subject.mesh	Methane
dc.subject.mesh	Membranes, Artificial
dc.subject.mesh	Bioreactors
dc.subject.mesh	Waste Disposal, Fluid
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Wastewater
dc.subject.mesh	Bioreactors
dc.subject.mesh	Animals
dc.subject.mesh	Wastewater
dc.subject.mesh	Charcoal
dc.subject.mesh	Swine
dc.subject.mesh	Waste Disposal, Fluid
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Membranes, Artificial
dc.subject.mesh	Methane
dc.title	An in-situ biochar-enhanced anaerobic membrane bioreactor for swine wastewater treatment under various organic loading rates.
dc.type	Journal Article
utslib.citation.volume	146
utslib.location.activity	Netherlands
utslib.for	03 Chemical Sciences
utslib.for	04 Earth Sciences
utslib.for	05 Environmental Sciences
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/UTS Groups
pubs.organisational-group	University of Technology Sydney/UTS Groups/Centre for Technology in Water and Wastewater (CTWW)
utslib.copyright.status	embargoed	*
utslib.copyright.embargo	2026-05-23T00:00:00+1000Z
dc.date.updated	2025-01-02T05:16:38Z
pubs.publication-status	Published
pubs.volume	146

Abstract:

A biochar-assisted anaerobic membrane bioreactor (BC-AnMBR) was conducted to evaluate the performance in treating swine wastewater with different organic loading rates (OLR) ranging from 0.38 to 1.13 kg-COD/(m3.d). Results indicated that adding spent coffee grounds biochar (SCG-BC) improved the organic removal efficiency compared to the conventional AnMBR, with an overall COD removal rate of > 95.01%. Meanwhile, methane production of up to 0.22 LCH4/gCOD with an improvement of 45.45% was achieved under a high OLR of 1.13 kg-COD/(m3.d). Furthermore, the transmembrane pressure (TMP) in the BC-AnMBR system was stable at 4.5 kPa, and no irreversible membrane fouling occurred within 125 days. Microbial community analysis revealed that the addition of SCG-BC increased the relative abundance of autotrophic methanogenic archaea, particularly Methanosarcina (from 0.11% to 11.16%) and Methanothrix (from 16.34% to 24.05%). More importantly, Desulfobacterota and Firmicutes phylum with direct interspecific electron transfer (DIET) capabilities were also enriched with autotrophic methanogens. Analysis of the electron transfer pathway showed that the concentration of c-type cytochromes increased by 38.60% in the presence of SCG-BC, and thus facilitated the establishment of DIET and maintained high activity of the electron transfer system even at high OLR. In short, the BC-AnMBR system performs well under various OLR conditions and is stable in the recovery energy system for swine wastewater.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/182832