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

Handle URI:
http://hdl.handle.net/10754/562670
Title:
The culture of Chlorella vulgaris in a recycled supernatant: Effects on biomass production and medium quality
Authors:
Hadj-Romdhane, F.; Zheng, Xing; Jaouen, Pascal; Pruvost, Jérémy; Grizeau, Dominique; Croue, Jean-Philippe; Bourseau, Patrick
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.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Water Desalination & Reuse Research Cntr; Biological and Environmental Sciences and Engineering (BESE) Division
Publisher:
Elsevier
Journal:
Bioresource Technology
Issue Date:
Mar-2013
DOI:
10.1016/j.biortech.2013.01.025
PubMed ID:
23411460
Type:
Article
ISSN:
09608524
Sponsors:
The authors thank Helene Marec (GEPEA UMR-CNRS 6144) and Jean-Luc Hauser for photobioreactor design and their technical support.
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorHadj-Romdhane, F.en
dc.contributor.authorZheng, Xingen
dc.contributor.authorJaouen, Pascalen
dc.contributor.authorPruvost, Jérémyen
dc.contributor.authorGrizeau, Dominiqueen
dc.contributor.authorCroue, Jean-Philippeen
dc.contributor.authorBourseau, Patricken
dc.date.accessioned2015-08-03T11:00:42Zen
dc.date.available2015-08-03T11:00:42Zen
dc.date.issued2013-03en
dc.identifier.issn09608524en
dc.identifier.pmid23411460en
dc.identifier.doi10.1016/j.biortech.2013.01.025en
dc.identifier.urihttp://hdl.handle.net/10754/562670en
dc.description.abstractReusing 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.en
dc.description.sponsorshipThe authors thank Helene Marec (GEPEA UMR-CNRS 6144) and Jean-Luc Hauser for photobioreactor design and their technical support.en
dc.publisherElsevieren
dc.subjectChlorella vulgarisen
dc.subjectExcreted organic matteren
dc.subjectLarge-scale cultureen
dc.subjectWater recyclingen
dc.titleThe culture of Chlorella vulgaris in a recycled supernatant: Effects on biomass production and medium qualityen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentWater Desalination & Reuse Research Cntren
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalBioresource Technologyen
dc.contributor.institutionUniv Nantes, LUNAM Univ, CNRS, GEPEA UMR 6144, F-44602 St Nazaire, Franceen
dc.contributor.institutionUEB Univ Bretagne Sud, LIMATB, F-56321 Lorient, Franceen
kaust.authorZheng, Xingen
kaust.authorCroue, Jean-Philippeen
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