Performance and Mechanism of Potassium Ferrate(VI) Enhancing Dark Fermentative Hydrogen Accumulation from Waste Activated Sludge

Li, X; Li, X; Kuang, Z; Kuang, Z; Zhang, J; Zhang, J; Liu, X; Liu, X; Hu, J; Hu, J; Xu, Q; Wang, D; Wang, D; Liu, Y; Wang, Q; Yang, Q; Yang, Q; Li, H

Performance and Mechanism of Potassium Ferrate(VI) Enhancing Dark Fermentative Hydrogen Accumulation from Waste Activated Sludge

Li, X Li, X Kuang, Z Kuang, Z Zhang, J Zhang, J Liu, X Liu, X Hu, J Hu, J Xu, Q Wang, D Wang, D Liu, Y

Wang, Q

Yang, Q Yang, Q Li, H

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Publisher:: AMER CHEMICAL SOC
Publication Type:: Journal Article
Citation:: ACS Sustainable Chemistry and Engineering, 2020, 8, (23), pp. 8681-8691
Issue Date:: 2020-06-15

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Field	Value	Language
dc.contributor.author	Li, X
dc.contributor.author	Li, X
dc.contributor.author	Kuang, Z
dc.contributor.author	Kuang, Z
dc.contributor.author	Zhang, J
dc.contributor.author	Zhang, J
dc.contributor.author	Liu, X
dc.contributor.author	Liu, X
dc.contributor.author	Hu, J
dc.contributor.author	Hu, J
dc.contributor.author	Xu, Q
dc.contributor.author	Wang, D
dc.contributor.author	Wang, D
dc.contributor.author	Liu, Y https://orcid.org/0000-0001-6677-7961
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331
dc.contributor.author	Yang, Q
dc.contributor.author	Yang, Q
dc.contributor.author	Li, H
dc.date.accessioned	2021-03-25T07:57:00Z
dc.date.available	2021-03-25T07:57:00Z
dc.date.issued	2020-06-15
dc.identifier.citation	ACS Sustainable Chemistry and Engineering, 2020, 8, (23), pp. 8681-8691
dc.identifier.issn	2168-0485
dc.identifier.issn	2168-0485
dc.identifier.uri	http://hdl.handle.net/10453/147524
dc.description.abstract	© 2020 American Chemical Society. Potassium ferrate (K2FeO4, PF), as a multifunctional green oxidant, has been used for oxidative degradation of pollutants and recovery of resources in sludge. However, its impact on the generation of hydrogen in anaerobic fermentation of waste activated sludge (WAS) is still unclear. The purpose of this work is to study the influence of PF on the dark fermentative hydrogen production. Experimental result suggested that as PF increased from 0 to 0.09 g/g of TSS (total suspended solids), the maximal hydrogen production increased from 1.47 to 8.35 mL/g VSS (volatile suspended solids). A further increase to 0.12 g/g of TSS resulted in a decrease in hydrogen yield. Mechanism studies revealed that that the addition of PF not only facilitated the disruption of sludge cell and extracellular polymeric substances (EPS) but also increased the proportion of biodegradable organics, providing more bioavailable organics for subsequent reactions involved in hydrogen accumulation. Although the activities of microorganisms relevant to dark fermentation were suppressed to a certain extent in the presence of PF, the induced suppression to hydrogen consumers was more severe. Microbial studies indicated that the relative abundances of hydrogen producers (such as Petrimonas and Proteiniborus) were augmented while hydrogen consumers (such as Methanosaeta and Methylocaldum) decreased in the presence of PF.
dc.language	English
dc.publisher	AMER CHEMICAL SOC
dc.relation.ispartof	ACS Sustainable Chemistry and Engineering
dc.relation.isbasedon	10.1021/acssuschemeng.0c01889
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0301 Analytical Chemistry, 0502 Environmental Science and Management, 0904 Chemical Engineering
dc.title	Performance and Mechanism of Potassium Ferrate(VI) Enhancing Dark Fermentative Hydrogen Accumulation from Waste Activated Sludge
dc.type	Journal Article
utslib.citation.volume	8
utslib.for	0904 Chemical Engineering
utslib.for	0301 Analytical Chemistry
utslib.for	0502 Environmental Science and Management
utslib.for	0904 Chemical Engineering
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	2021-03-25T07:56:55Z
pubs.issue	23
pubs.publication-status	Published
pubs.volume	8
utslib.citation.issue	23

Abstract:

© 2020 American Chemical Society. Potassium ferrate (K2FeO4, PF), as a multifunctional green oxidant, has been used for oxidative degradation of pollutants and recovery of resources in sludge. However, its impact on the generation of hydrogen in anaerobic fermentation of waste activated sludge (WAS) is still unclear. The purpose of this work is to study the influence of PF on the dark fermentative hydrogen production. Experimental result suggested that as PF increased from 0 to 0.09 g/g of TSS (total suspended solids), the maximal hydrogen production increased from 1.47 to 8.35 mL/g VSS (volatile suspended solids). A further increase to 0.12 g/g of TSS resulted in a decrease in hydrogen yield. Mechanism studies revealed that that the addition of PF not only facilitated the disruption of sludge cell and extracellular polymeric substances (EPS) but also increased the proportion of biodegradable organics, providing more bioavailable organics for subsequent reactions involved in hydrogen accumulation. Although the activities of microorganisms relevant to dark fermentation were suppressed to a certain extent in the presence of PF, the induced suppression to hydrogen consumers was more severe. Microbial studies indicated that the relative abundances of hydrogen producers (such as Petrimonas and Proteiniborus) were augmented while hydrogen consumers (such as Methanosaeta and Methylocaldum) decreased in the presence of PF.

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http://hdl.handle.net/10453/147524