The culture of Chlorella vulgaris in a recycled supernatant: Effects on biomass production and medium quality
KAUST DepartmentWater Desalination and Reuse Research Center (WDRC)
Water Desalination & Reuse Research Cntr
Biological and Environmental Sciences and Engineering (BESE) Division
MetadataShow full item record
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.
SponsorsThe authors thank Helene Marec (GEPEA UMR-CNRS 6144) and Jean-Luc Hauser for photobioreactor design and their technical support.
- Development and validation of a minimal growth medium for recycling Chlorella vulgaris culture.
- Authors: Hadj-Romdhane F, Jaouen P, Pruvost J, Grizeau D, Van Vooren G, Bourseau P
- Issue date: 2012 Nov
- Impact of changes in broth composition on Chlorella vulgaris cultivation in a membrane photobioreactor (MPBR) with permeate recycle.
- Authors: Discart V, Bilad MR, Marbelia L, Vankelecom IF
- Issue date: 2014
- Use of orange peel extract for mixotrophic cultivation of Chlorella vulgaris: increased production of biomass and FAMEs.
- Authors: Park WK, Moon M, Kwak MS, Jeon S, Choi GG, Yang JW, Lee B
- Issue date: 2014 Nov
- Biomass and lipid productivities of Chlorella vulgaris under autotrophic, heterotrophic and mixotrophic growth conditions.
- Authors: Liang Y, Sarkany N, Cui Y
- Issue date: 2009 Jul