Cultivation of Chlorella sorokiniana in a bubble-column bioreactor coupled with cooking cocoon wastewater treatment: effects of initial cell density and aeration rate

Previous studies have documented that Chlorella sorokiniana could grow well on cooking cocoon wastewater (CCW) with a maximum biomass of 0.49 g/L. In order to further enhance the biomass production and nutrient removals, a bubble-column bioreactor was designed and performed to cultivate C. sorokinia...

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Autores principales:	Chunye Xue, Kun Gao, Pingkang Qian, Jingwei Dong, Zheng Gao, Qiaoqiao Liu, Biao Chen, Xiangyuan Deng
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	aeration rate chlorella sorokiniana cooking cocoon wastewater initial cell density photobioreactor Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/1153ab79a87c4829aa8c366d0e275fdb
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spelling	oai:doaj.org-article:1153ab79a87c4829aa8c366d0e275fdb2021-11-06T11:07:24ZCultivation of Chlorella sorokiniana in a bubble-column bioreactor coupled with cooking cocoon wastewater treatment: effects of initial cell density and aeration rate0273-12231996-973210.2166/wst.2021.154https://doaj.org/article/1153ab79a87c4829aa8c366d0e275fdb2021-06-01T00:00:00Zhttp://wst.iwaponline.com/content/83/11/2615https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Previous studies have documented that Chlorella sorokiniana could grow well on cooking cocoon wastewater (CCW) with a maximum biomass of 0.49 g/L. In order to further enhance the biomass production and nutrient removals, a bubble-column bioreactor was designed and performed to cultivate C. sorokiniana in CCW, and two main cultivation parameters were investigated in this work. Results showed that a maximum algal biomass, specific growth rate, and biomass productivity of 2.83 g/L, 0.854 d−1, and 476.25 g/L/d, respectively, were achieved when this alga was cultivated in the bioreactor with an initial cell density of 0.8 g/L and an aeration rate of 3.34 L air/L culture/min; meanwhile, removal efficiencies of ammonium, total nitrogen, total phosphorus, and chemical oxygen demand reached 97.96, 85.66, 97.96, and 86.43%, respectively, which were significantly higher than that obtained in our previous studies. Moreover, chemical compositions in the algal cells varied with the changes of cultivation conditions (i.e., initial cell density and aeration rate). Thus, it is concluded that (1) the bubble-column bioreactor was suitable for cultivation of C. sorokiniana coupled with the CCW treatment and (2) initial cell density and aeration rate affected the biomass production, nutrient removals and chemical compositions of this alga. HIGHLIGHTS A bubble-column bioreactor was designed and performed in this work.; The bioreactor was suitable to cultivate C. sorokiniana using CCW.; Initial cell density and aeration rate were two key factors during the cultivation.; Biomass production and nutrient removal were enhanced under the optimal conditions.; Algal chemical compositions varied with the changes in cultivation conditions.;Chunye XueKun GaoPingkang QianJingwei DongZheng GaoQiaoqiao LiuBiao ChenXiangyuan DengIWA Publishingarticleaeration ratechlorella sorokinianacooking cocoon wastewaterinitial cell densityphotobioreactorEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 11, Pp 2615-2628 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	aeration rate chlorella sorokiniana cooking cocoon wastewater initial cell density photobioreactor Environmental technology. Sanitary engineering TD1-1066
spellingShingle	aeration rate chlorella sorokiniana cooking cocoon wastewater initial cell density photobioreactor Environmental technology. Sanitary engineering TD1-1066 Chunye Xue Kun Gao Pingkang Qian Jingwei Dong Zheng Gao Qiaoqiao Liu Biao Chen Xiangyuan Deng Cultivation of Chlorella sorokiniana in a bubble-column bioreactor coupled with cooking cocoon wastewater treatment: effects of initial cell density and aeration rate
description	Previous studies have documented that Chlorella sorokiniana could grow well on cooking cocoon wastewater (CCW) with a maximum biomass of 0.49 g/L. In order to further enhance the biomass production and nutrient removals, a bubble-column bioreactor was designed and performed to cultivate C. sorokiniana in CCW, and two main cultivation parameters were investigated in this work. Results showed that a maximum algal biomass, specific growth rate, and biomass productivity of 2.83 g/L, 0.854 d−1, and 476.25 g/L/d, respectively, were achieved when this alga was cultivated in the bioreactor with an initial cell density of 0.8 g/L and an aeration rate of 3.34 L air/L culture/min; meanwhile, removal efficiencies of ammonium, total nitrogen, total phosphorus, and chemical oxygen demand reached 97.96, 85.66, 97.96, and 86.43%, respectively, which were significantly higher than that obtained in our previous studies. Moreover, chemical compositions in the algal cells varied with the changes of cultivation conditions (i.e., initial cell density and aeration rate). Thus, it is concluded that (1) the bubble-column bioreactor was suitable for cultivation of C. sorokiniana coupled with the CCW treatment and (2) initial cell density and aeration rate affected the biomass production, nutrient removals and chemical compositions of this alga. HIGHLIGHTS A bubble-column bioreactor was designed and performed in this work.; The bioreactor was suitable to cultivate C. sorokiniana using CCW.; Initial cell density and aeration rate were two key factors during the cultivation.; Biomass production and nutrient removal were enhanced under the optimal conditions.; Algal chemical compositions varied with the changes in cultivation conditions.;
format	article
author	Chunye Xue Kun Gao Pingkang Qian Jingwei Dong Zheng Gao Qiaoqiao Liu Biao Chen Xiangyuan Deng
author_facet	Chunye Xue Kun Gao Pingkang Qian Jingwei Dong Zheng Gao Qiaoqiao Liu Biao Chen Xiangyuan Deng
author_sort	Chunye Xue
title	Cultivation of Chlorella sorokiniana in a bubble-column bioreactor coupled with cooking cocoon wastewater treatment: effects of initial cell density and aeration rate
title_short	Cultivation of Chlorella sorokiniana in a bubble-column bioreactor coupled with cooking cocoon wastewater treatment: effects of initial cell density and aeration rate
title_full	Cultivation of Chlorella sorokiniana in a bubble-column bioreactor coupled with cooking cocoon wastewater treatment: effects of initial cell density and aeration rate
title_fullStr	Cultivation of Chlorella sorokiniana in a bubble-column bioreactor coupled with cooking cocoon wastewater treatment: effects of initial cell density and aeration rate
title_full_unstemmed	Cultivation of Chlorella sorokiniana in a bubble-column bioreactor coupled with cooking cocoon wastewater treatment: effects of initial cell density and aeration rate
title_sort	cultivation of chlorella sorokiniana in a bubble-column bioreactor coupled with cooking cocoon wastewater treatment: effects of initial cell density and aeration rate
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/1153ab79a87c4829aa8c366d0e275fdb
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Cultivation of Chlorella sorokiniana in a bubble-column bioreactor coupled with cooking cocoon wastewater treatment: effects of initial cell density and aeration rate

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