Cultivation of Chlorella pyrenoidosa and Scenedesmus obliquus in swine wastewater: Nitrogen and phosphorus removal and microalgal growth

He, Z; Fan, X; Qu, L; Zhou, X; Jin, W; Hatshan, MR; Li, X; Liu, H; Jiang, G; Wang, Q

Cultivation of Chlorella pyrenoidosa and Scenedesmus obliquus in swine wastewater: Nitrogen and phosphorus removal and microalgal growth

He, Z Fan, X Qu, L Zhou, X Jin, W Hatshan, MR Li, X

Liu, H

Jiang, G Wang, Q

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Process Safety and Environmental Protection, 2023, 179, pp. 887-895
Issue Date:: 2023-11-01

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Field	Value	Language
dc.contributor.author	He, Z
dc.contributor.author	Fan, X
dc.contributor.author	Qu, L
dc.contributor.author	Zhou, X
dc.contributor.author	Jin, W
dc.contributor.author	Hatshan, MR
dc.contributor.author	Li, X https://orcid.org/0000-0003-1768-9556
dc.contributor.author	Liu, H https://orcid.org/0000-0003-4513-4988
dc.contributor.author	Jiang, G
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331
dc.date.accessioned	2024-04-11T19:52:40Z
dc.date.available	2024-04-11T19:52:40Z
dc.date.issued	2023-11-01
dc.identifier.citation	Process Safety and Environmental Protection, 2023, 179, pp. 887-895
dc.identifier.issn	0957-5820
dc.identifier.issn	1744-3598
dc.identifier.uri	http://hdl.handle.net/10453/177769
dc.description.abstract	Using microalgae to treat swine wastewater can effectively reduce the increasing pollution and save the cost of cultivating microalgae. In this study, the growth and denitrification and phosphorus removal effects of Scenedesmus obliquus and Chlorella pyrenoidosa at different dilutions in swine wastewater were investigated to solve the problem that microalgae could not be cultivated in the raw swine wastewater. After diluting the swine wastewater 8 and 12 times, the growth was optimized after 11 days of cultivation of Scenedesmus obliquus and 9 days of cultivation of Chlorella pyrenoidosa. Compared to Chlorella pyrenoidosa, the biomass and chlorophyll-a content were higher in Scenedesmus obliquus, at 1.48 g/L and 18.46 mg/L, respectively. The removal of nitrogen and phosphorus indicators was almost 100 %. Subsequently, Scenedesmus obliquus was cultured in an 8-fold dilution of swine and domestic wastewater, with dry weights of 0.83 g/L and 1.44 g/L, and lipid contents of 41.26 % and 25.11 %, respectively. Compared to Chlorella pyrenoidosa, Scenedesmus obliquus was more tolerant to nitrogen and phosphorus in swine wastewater, and at the same time, it had a higher growth rate, making it more suitable for treating swine wastewater and accumulating biomass.
dc.language	English
dc.publisher	ELSEVIER
dc.relation.ispartof	Process Safety and Environmental Protection
dc.relation.isbasedon	10.1016/j.psep.2023.09.073
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0102 Applied Mathematics, 0904 Chemical Engineering, 0911 Maritime Engineering, 0914 Resources Engineering and Extractive Metallurgy
dc.subject.classification	Chemical Engineering
dc.subject.classification	Strategic, Defence & Security Studies
dc.subject.classification	4004 Chemical engineering
dc.subject.classification	4011 Environmental engineering
dc.subject.classification	4019 Resources engineering and extractive metallurgy
dc.title	Cultivation of Chlorella pyrenoidosa and Scenedesmus obliquus in swine wastewater: Nitrogen and phosphorus removal and microalgal growth
dc.type	Journal Article
utslib.citation.volume	179
utslib.for	0102 Applied Mathematics
utslib.for	0904 Chemical Engineering
utslib.for	0911 Maritime Engineering
utslib.for	0914 Resources Engineering and Extractive Metallurgy
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	2024-04-11T19:52:37Z
pubs.publication-status	Published
pubs.volume	179

Abstract:

Using microalgae to treat swine wastewater can effectively reduce the increasing pollution and save the cost of cultivating microalgae. In this study, the growth and denitrification and phosphorus removal effects of Scenedesmus obliquus and Chlorella pyrenoidosa at different dilutions in swine wastewater were investigated to solve the problem that microalgae could not be cultivated in the raw swine wastewater. After diluting the swine wastewater 8 and 12 times, the growth was optimized after 11 days of cultivation of Scenedesmus obliquus and 9 days of cultivation of Chlorella pyrenoidosa. Compared to Chlorella pyrenoidosa, the biomass and chlorophyll-a content were higher in Scenedesmus obliquus, at 1.48 g/L and 18.46 mg/L, respectively. The removal of nitrogen and phosphorus indicators was almost 100 %. Subsequently, Scenedesmus obliquus was cultured in an 8-fold dilution of swine and domestic wastewater, with dry weights of 0.83 g/L and 1.44 g/L, and lipid contents of 41.26 % and 25.11 %, respectively. Compared to Chlorella pyrenoidosa, Scenedesmus obliquus was more tolerant to nitrogen and phosphorus in swine wastewater, and at the same time, it had a higher growth rate, making it more suitable for treating swine wastewater and accumulating biomass.

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http://hdl.handle.net/10453/177769