Hydrogen sulphide management in anaerobic digestion: A critical review on input control, process regulation, and post-treatment.

Vu, HP; Nguyen, LN; Wang, Q; Ngo, HH; Liu, Q; Zhang, X; Nghiem, LD

Hydrogen sulphide management in anaerobic digestion: A critical review on input control, process regulation, and post-treatment.

Vu, HP Nguyen, LN Wang, Q

Ngo, HH Liu, Q Zhang, X Nghiem, LD

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Bioresource Technology, 2022, 346, pp. 1-10
Issue Date:: 2022-02-01

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Field	Value	Language
dc.contributor.author	Vu, HP
dc.contributor.author	Nguyen, LN
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331
dc.contributor.author	Ngo, HH
dc.contributor.author	Liu, Q
dc.contributor.author	Zhang, X
dc.contributor.author	Nghiem, LD
dc.date.accessioned	2022-08-12T02:54:32Z
dc.date.available	2021-12-22
dc.date.available	2022-08-12T02:54:32Z
dc.date.issued	2022-02-01
dc.identifier.citation	Bioresource Technology, 2022, 346, pp. 1-10
dc.identifier.issn	0960-8524
dc.identifier.issn	1873-2976
dc.identifier.uri	http://hdl.handle.net/10453/160006
dc.description.abstract	Hydrogen sulphide (H2S) in biogas is a problematic impurity that can inhibit methanogenesis and cause equipment corrosion. This review discusses technologies to remove H2S during anaerobic digestion (AD) via: input control, process regulation, and post-treatment. Post-treatment technologies (e.g. biotrickling filters and scrubbers) are mature with >95% removal efficiency but they do not mitigate H2S toxicity to methanogens within the AD. Input control (i.e. substrate pretreatment via chemical addition) reduces sulphur input into AD via sulphur precipitation. However, available results showed <75% of H2S removal efficiency. Microaeration to regulate AD condition is a promising alternative for controlling H2S formation. Microaeration, or the use of oxygen to regulate the redox potential at around -250 mV, has been demonstrated at pilot and full scale with >95% H2S reduction, stable methane production, and low operational cost. Further adaptation of microaeration relies on a comprehensive design framework and exchange operational experience for eliminating the risk of over-aeration.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier
dc.relation.ispartof	Bioresource Technology
dc.relation.isbasedon	10.1016/j.biortech.2021.126634
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject.classification	Biotechnology
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Biofuels
dc.subject.mesh	Bioreactors
dc.subject.mesh	Hydrogen Sulfide
dc.subject.mesh	Methane
dc.subject.mesh	Oxygen
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Biofuels
dc.subject.mesh	Bioreactors
dc.subject.mesh	Hydrogen Sulfide
dc.subject.mesh	Methane
dc.subject.mesh	Oxygen
dc.subject.mesh	Hydrogen Sulfide
dc.subject.mesh	Oxygen
dc.subject.mesh	Methane
dc.subject.mesh	Bioreactors
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Biofuels
dc.title	Hydrogen sulphide management in anaerobic digestion: A critical review on input control, process regulation, and post-treatment.
dc.type	Journal Article
utslib.citation.volume	346
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	open_access	*
pubs.consider-herdc	false
utslib.copyright.embargo	2024-02-01T00:00:00+1000Z
dc.date.updated	2022-08-12T02:54:29Z
pubs.publication-status	Published
pubs.volume	346

Abstract:

Hydrogen sulphide (H2S) in biogas is a problematic impurity that can inhibit methanogenesis and cause equipment corrosion. This review discusses technologies to remove H2S during anaerobic digestion (AD) via: input control, process regulation, and post-treatment. Post-treatment technologies (e.g. biotrickling filters and scrubbers) are mature with >95% removal efficiency but they do not mitigate H2S toxicity to methanogens within the AD. Input control (i.e. substrate pretreatment via chemical addition) reduces sulphur input into AD via sulphur precipitation. However, available results showed <75% of H2S removal efficiency. Microaeration to regulate AD condition is a promising alternative for controlling H2S formation. Microaeration, or the use of oxygen to regulate the redox potential at around -250 mV, has been demonstrated at pilot and full scale with >95% H2S reduction, stable methane production, and low operational cost. Further adaptation of microaeration relies on a comprehensive design framework and exchange operational experience for eliminating the risk of over-aeration.

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http://hdl.handle.net/10453/160006