Occurrence and transformation of heavy metals during swine waste treatment: A full scale study.

Liu, W; Cao, D; Wang, Y; Xu, Z; Li, G; Nghiem, LD; Luo, W

Occurrence and transformation of heavy metals during swine waste treatment: A full scale study.

Liu, W Cao, D Wang, Y Xu, Z Li, G Nghiem, LD Luo, W

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Sci Total Environ, 2023, 895, pp. 164947
Issue Date:: 2023-10-15

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Full metadata record

Field	Value	Language
dc.contributor.author	Liu, W
dc.contributor.author	Cao, D
dc.contributor.author	Wang, Y
dc.contributor.author	Xu, Z
dc.contributor.author	Li, G
dc.contributor.author	Nghiem, LD
dc.contributor.author	Luo, W
dc.date.accessioned	2024-04-11T06:37:19Z
dc.date.available	2023-06-14
dc.date.available	2024-04-11T06:37:19Z
dc.date.issued	2023-10-15
dc.identifier.citation	Sci Total Environ, 2023, 895, pp. 164947
dc.identifier.issn	0048-9697
dc.identifier.issn	1879-1026
dc.identifier.uri	http://hdl.handle.net/10453/177754
dc.description.abstract	This study tracked the fate of nine detected heavy metals in an industrial swine farm with integrated waste treatment, including anoxic stabilization, fixed-film anaerobic digestion, anoxic-oxic (A/O), and composting. Results show that heavy metals exhibited different transformation behaviors in the treatment streamline with Fe, Zn, Cu and Mn as the most abundant ones in raw swine waste. The overall removal of water-soluble heavy metals averaged at 30 %, 24 % and 42 % by anoxic stabilization, anaerobic digestion and A/O unit, respectively. In particular, anoxic stabilization could effectively remove Cu, Mn and Ni; while A/O unit was highly effective for Fe, Cr and Zn elimination from water-soluble states. As such, the environmental risk of liquid products for agricultural irrigation decreased gradually to the safe pollution level in swine waste treatment. Furthermore, heavy metals in the solid (slurry) phase of these bioprocesses could be immobilized with the passivation rate in the range of 42-70 %. Nevertheless, heavy metals preferably transformed from liquid to biosolids to remain their environmental risks when biosolids were used as organic fertilizer in agriculture, thereby requiring effective strategies to advance their passivation in all bioprocesses, particularly composting as the last treatment unit.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier
dc.relation.ispartof	Sci Total Environ
dc.relation.isbasedon	10.1016/j.scitotenv.2023.164947
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject.classification	Environmental Sciences
dc.subject.mesh	Animals
dc.subject.mesh	Swine
dc.subject.mesh	Biosolids
dc.subject.mesh	Metals, Heavy
dc.subject.mesh	Environmental Pollution
dc.subject.mesh	Agricultural Irrigation
dc.subject.mesh	Environmental Monitoring
dc.subject.mesh	Animals
dc.subject.mesh	Swine
dc.subject.mesh	Metals, Heavy
dc.subject.mesh	Environmental Pollution
dc.subject.mesh	Environmental Monitoring
dc.subject.mesh	Agricultural Irrigation
dc.subject.mesh	Biosolids
dc.subject.mesh	Animals
dc.subject.mesh	Swine
dc.subject.mesh	Biosolids
dc.subject.mesh	Metals, Heavy
dc.subject.mesh	Environmental Pollution
dc.subject.mesh	Agricultural Irrigation
dc.subject.mesh	Environmental Monitoring
dc.title	Occurrence and transformation of heavy metals during swine waste treatment: A full scale study.
dc.type	Journal Article
utslib.citation.volume	895
utslib.location.activity	Netherlands
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	embargoed	*
utslib.copyright.embargo	2025-10-15T00:00:00+1000Z
dc.date.updated	2024-04-11T06:37:17Z
pubs.publication-status	Published
pubs.volume	895

Abstract:

This study tracked the fate of nine detected heavy metals in an industrial swine farm with integrated waste treatment, including anoxic stabilization, fixed-film anaerobic digestion, anoxic-oxic (A/O), and composting. Results show that heavy metals exhibited different transformation behaviors in the treatment streamline with Fe, Zn, Cu and Mn as the most abundant ones in raw swine waste. The overall removal of water-soluble heavy metals averaged at 30 %, 24 % and 42 % by anoxic stabilization, anaerobic digestion and A/O unit, respectively. In particular, anoxic stabilization could effectively remove Cu, Mn and Ni; while A/O unit was highly effective for Fe, Cr and Zn elimination from water-soluble states. As such, the environmental risk of liquid products for agricultural irrigation decreased gradually to the safe pollution level in swine waste treatment. Furthermore, heavy metals in the solid (slurry) phase of these bioprocesses could be immobilized with the passivation rate in the range of 42-70 %. Nevertheless, heavy metals preferably transformed from liquid to biosolids to remain their environmental risks when biosolids were used as organic fertilizer in agriculture, thereby requiring effective strategies to advance their passivation in all bioprocesses, particularly composting as the last treatment unit.

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http://hdl.handle.net/10453/177754