Screening of microalgae for integral biogas slurry nutrient removal and biogas upgrading by different microalgae cultivation technology

Abstract The microalgae-based technology has been developed to reduce biogas slurry nutrients and upgrade biogas simultaneously. In this work, five microalgal strains named Chlorella vulgaris, Scenedesmus obliquus, Selenastrum capricornutum, Nitzschia palea, and Anabaena spiroides under mono- and co...

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Autores principales:	Xue Wang, Keting Bao, Weixing Cao, Yongjun Zhao, Chang Wei Hu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/16b7ba7473c6423f9b1e8069f00600b9
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spelling	oai:doaj.org-article:16b7ba7473c6423f9b1e8069f00600b92021-12-02T15:05:57ZScreening of microalgae for integral biogas slurry nutrient removal and biogas upgrading by different microalgae cultivation technology10.1038/s41598-017-05841-92045-2322https://doaj.org/article/16b7ba7473c6423f9b1e8069f00600b92017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05841-9https://doaj.org/toc/2045-2322Abstract The microalgae-based technology has been developed to reduce biogas slurry nutrients and upgrade biogas simultaneously. In this work, five microalgal strains named Chlorella vulgaris, Scenedesmus obliquus, Selenastrum capricornutum, Nitzschia palea, and Anabaena spiroides under mono- and co-cultivation were used for biogas upgrading. Optimum biogas slurry nutrient reduction could be achieved by co-cultivating microalgae (Chlorella vulgaris, Scenedesmus obliquus, and Nitzschia palea) with fungi using the pelletization technology. In addition, the effects of different ratio of mixed LED light wavelengths applying mixed light-emitting diode during algae strains and fungi co-cultivation on CO2 and biogas slurry nutrient removal efficiency were also investigated. The results showed that the COD (chemical oxygen demand), TN (total nitrogen), and TP (total phosphorus) removal efficiency were 85.82 ± 5.37%, 83.31 ± 4.72%, and 84.26 ± 5.58%, respectively at red: blue = 5:5 under the co-cultivation of S. obliquus and fungi. In terms of biogas upgrading, CH4 contents were higher than 90% (v/v) for all strains, except the co-cultivation with S. obliquus and fungi at red: blue = 3:7. The results indicated that co-cultivation of microalgae with fungi under mixed light wavelengths treatments was most successful in nutrient removal from wastewater and biogas upgrading.Xue WangKeting BaoWeixing CaoYongjun ZhaoChang Wei HuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xue Wang Keting Bao Weixing Cao Yongjun Zhao Chang Wei Hu Screening of microalgae for integral biogas slurry nutrient removal and biogas upgrading by different microalgae cultivation technology
description	Abstract The microalgae-based technology has been developed to reduce biogas slurry nutrients and upgrade biogas simultaneously. In this work, five microalgal strains named Chlorella vulgaris, Scenedesmus obliquus, Selenastrum capricornutum, Nitzschia palea, and Anabaena spiroides under mono- and co-cultivation were used for biogas upgrading. Optimum biogas slurry nutrient reduction could be achieved by co-cultivating microalgae (Chlorella vulgaris, Scenedesmus obliquus, and Nitzschia palea) with fungi using the pelletization technology. In addition, the effects of different ratio of mixed LED light wavelengths applying mixed light-emitting diode during algae strains and fungi co-cultivation on CO2 and biogas slurry nutrient removal efficiency were also investigated. The results showed that the COD (chemical oxygen demand), TN (total nitrogen), and TP (total phosphorus) removal efficiency were 85.82 ± 5.37%, 83.31 ± 4.72%, and 84.26 ± 5.58%, respectively at red: blue = 5:5 under the co-cultivation of S. obliquus and fungi. In terms of biogas upgrading, CH4 contents were higher than 90% (v/v) for all strains, except the co-cultivation with S. obliquus and fungi at red: blue = 3:7. The results indicated that co-cultivation of microalgae with fungi under mixed light wavelengths treatments was most successful in nutrient removal from wastewater and biogas upgrading.
format	article
author	Xue Wang Keting Bao Weixing Cao Yongjun Zhao Chang Wei Hu
author_facet	Xue Wang Keting Bao Weixing Cao Yongjun Zhao Chang Wei Hu
author_sort	Xue Wang
title	Screening of microalgae for integral biogas slurry nutrient removal and biogas upgrading by different microalgae cultivation technology
title_short	Screening of microalgae for integral biogas slurry nutrient removal and biogas upgrading by different microalgae cultivation technology
title_full	Screening of microalgae for integral biogas slurry nutrient removal and biogas upgrading by different microalgae cultivation technology
title_fullStr	Screening of microalgae for integral biogas slurry nutrient removal and biogas upgrading by different microalgae cultivation technology
title_full_unstemmed	Screening of microalgae for integral biogas slurry nutrient removal and biogas upgrading by different microalgae cultivation technology
title_sort	screening of microalgae for integral biogas slurry nutrient removal and biogas upgrading by different microalgae cultivation technology
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/16b7ba7473c6423f9b1e8069f00600b9
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Screening of microalgae for integral biogas slurry nutrient removal and biogas upgrading by different microalgae cultivation technology

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