Document Detail

Growth of the microalgae Neochloris oleoabundans at high partial oxygen pressures and sub-saturating light intensity.
MedLine Citation:
PMID:  22079686     Owner:  NLM     Status:  MEDLINE    
The effect of partial oxygen pressure on growth of Neochloris oleoabundans was studied at sub-saturating light intensity in a fully-controlled stirred tank photobioreactor. At the three partial oxygen pressures tested (P(O)₂= 0.24; 0.63; 0.84 bar), the specific growth rate was 1.38; 1.36 and 1.06 day(-1), respectively. An increase of the P(CO)₂from 0.007 to 0.02 bar at P(O₂) of 0.84 bar resulted in an increase in the growth rate from 1.06 to 1.36 day(-1). These results confirm that the reduction of algal growth at high oxygen concentrations at sub-saturating light conditions is mainly caused by competitive inhibition of Rubisco. This negative effect on growth can be overcome by restoring the O(2)/CO(2) ratio by an increase in the partial carbon dioxide pressure. In comparison to general practice (P(O(2)) = 0.42 bar), working at partial O(2) pressure of 0.84 bar could reduce the energy requirement for degassing by a factor of 3-4.
Cláudia Sousa; Lenneke de Winter; Marcel Janssen; Marian H Vermuë; René H Wijffels
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2011-10-21
Journal Detail:
Title:  Bioresource technology     Volume:  104     ISSN:  1873-2976     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2011-12-27     Completed Date:  2012-04-18     Revised Date:  2012-06-29    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  565-70     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
Wetsus, P.O. Box 1113, 8900 CC Leeuwarden, The Netherlands.
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MeSH Terms
Bioreactors / microbiology*
Dose-Response Relationship, Radiation
Oxygen / metabolism*
Partial Pressure
Photobioreactors / microbiology*
Radiation Dosage
Volvocida / growth & development*,  radiation effects*
Reg. No./Substance:

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