The culture of Chlorella vulgaris in a recycled supernatant: Effects on biomass production and medium quality

F. Hadj-Romdhane; Xing Zheng; Pascal Jaouen; Jérémy Pruvost; Dominique Grizeau; Jean-Philippe Croue; Patrick Bourseau

doi:10.1016/j.biortech.2013.01.025

The culture of Chlorella vulgaris in a recycled supernatant: Effects on biomass production and medium quality

F. Hadj-Romdhane, Xing Zheng, Pascal Jaouen, Jérémy Pruvost, Dominique Grizeau, Jean-Philippe Croue, Patrick Bourseau

Research output: Contribution to journal › Article › peer-review

83 Scopus citations

Abstract

Reusing supernatant of microalgae culture medium can have inhibitory or toxic effects on the biomass production because of the release of organic metabolites by cells in the culture medium during their growth. This work investigated the impact of Chlorella vulgaris medium recycling on culture productivity, cells quality and accumulation of excreted metabolites in the culture medium. No significant impact on the C. vulgaris growth was observed after 63days of recycling, the productivity remained stable at around 0.55kgm-3day-1. Organic matters accumulated in supernatant were identified as biopolymers (BP) poor in nitrogen and with a size above 40kDa (probably polysaccharides), and small organic molecules (SOM) richer in nitrogen with a molecular size ranging from 1 to 3kDa. The concentration of biopolymers in the supernatant increased till to a maximum and then decreased, possibly consumed by bacteria, whereas small organic compounds accumulated in the medium. © 2013 Elsevier Ltd.

Original language	English (US)
Pages (from-to)	285-292
Number of pages	8
Journal	Bioresource Technology
Volume	132
DOIs	https://doi.org/10.1016/j.biortech.2013.01.025
State	Published - Mar 2013

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors thank Helene Marec (GEPEA UMR-CNRS 6144) and Jean-Luc Hauser for photobioreactor design and their technical support.

ASJC Scopus subject areas

Bioengineering
Environmental Engineering
Waste Management and Disposal

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10.1016/j.biortech.2013.01.025

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title = "The culture of Chlorella vulgaris in a recycled supernatant: Effects on biomass production and medium quality",

abstract = "Reusing supernatant of microalgae culture medium can have inhibitory or toxic effects on the biomass production because of the release of organic metabolites by cells in the culture medium during their growth. This work investigated the impact of Chlorella vulgaris medium recycling on culture productivity, cells quality and accumulation of excreted metabolites in the culture medium. No significant impact on the C. vulgaris growth was observed after 63days of recycling, the productivity remained stable at around 0.55kgm-3day-1. Organic matters accumulated in supernatant were identified as biopolymers (BP) poor in nitrogen and with a size above 40kDa (probably polysaccharides), and small organic molecules (SOM) richer in nitrogen with a molecular size ranging from 1 to 3kDa. The concentration of biopolymers in the supernatant increased till to a maximum and then decreased, possibly consumed by bacteria, whereas small organic compounds accumulated in the medium. {\textcopyright} 2013 Elsevier Ltd.",

author = "F. Hadj-Romdhane and Xing Zheng and Pascal Jaouen and J{\'e}r{\'e}my Pruvost and Dominique Grizeau and Jean-Philippe Croue and Patrick Bourseau",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors thank Helene Marec (GEPEA UMR-CNRS 6144) and Jean-Luc Hauser for photobioreactor design and their technical support.",

year = "2013",

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doi = "10.1016/j.biortech.2013.01.025",

language = "English (US)",

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AU - Hadj-Romdhane, F.

AU - Zheng, Xing

AU - Jaouen, Pascal

AU - Pruvost, Jérémy

AU - Grizeau, Dominique

AU - Croue, Jean-Philippe

AU - Bourseau, Patrick

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors thank Helene Marec (GEPEA UMR-CNRS 6144) and Jean-Luc Hauser for photobioreactor design and their technical support.

PY - 2013/3

Y1 - 2013/3

N2 - Reusing supernatant of microalgae culture medium can have inhibitory or toxic effects on the biomass production because of the release of organic metabolites by cells in the culture medium during their growth. This work investigated the impact of Chlorella vulgaris medium recycling on culture productivity, cells quality and accumulation of excreted metabolites in the culture medium. No significant impact on the C. vulgaris growth was observed after 63days of recycling, the productivity remained stable at around 0.55kgm-3day-1. Organic matters accumulated in supernatant were identified as biopolymers (BP) poor in nitrogen and with a size above 40kDa (probably polysaccharides), and small organic molecules (SOM) richer in nitrogen with a molecular size ranging from 1 to 3kDa. The concentration of biopolymers in the supernatant increased till to a maximum and then decreased, possibly consumed by bacteria, whereas small organic compounds accumulated in the medium. © 2013 Elsevier Ltd.

AB - Reusing supernatant of microalgae culture medium can have inhibitory or toxic effects on the biomass production because of the release of organic metabolites by cells in the culture medium during their growth. This work investigated the impact of Chlorella vulgaris medium recycling on culture productivity, cells quality and accumulation of excreted metabolites in the culture medium. No significant impact on the C. vulgaris growth was observed after 63days of recycling, the productivity remained stable at around 0.55kgm-3day-1. Organic matters accumulated in supernatant were identified as biopolymers (BP) poor in nitrogen and with a size above 40kDa (probably polysaccharides), and small organic molecules (SOM) richer in nitrogen with a molecular size ranging from 1 to 3kDa. The concentration of biopolymers in the supernatant increased till to a maximum and then decreased, possibly consumed by bacteria, whereas small organic compounds accumulated in the medium. © 2013 Elsevier Ltd.

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The culture of Chlorella vulgaris in a recycled supernatant: Effects on biomass production and medium quality

Abstract

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ASJC Scopus subject areas

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