Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/64440
Type: Artigo de periódico
Title: Effect of light cycles (night/day) on CO2 fixation and biomass production by microalgae in photobioreactors
Author: Jacob-Lopes, E
Scoparo, CHG
Lacerda, LMCF
Franco, TT
Abstract: The objective of this Study was to evaluate the effect of the photoperiod oil the biomass production and carbondioxide fixation rates using a photosynthetic Culture of the cyanobacterium Aphanothece microscopica Nageli in bubble column photobioreactors. The cultures were carried Out at temperatures of 35 degrees C, air enriched with carbon dioxide at concentrations of 15% and photon flux density of 150 mu mol m(-2) s(-1). The light cycles evaluated were 0:24, 2:22, 4:20. 6:18, 8:16, 10:14, 12:12, 14:10, 16:8, 18:6, 20:4, 22:2 and 24:0 (night:day), respectively. The results obtained indicated that the duration of the light periods was a determinant factor in the performance of the photobioreactors. A linear reduction in biomass production and carbon dioxide fixation with reductions in the duration of the light period was evident, with the exception of the 12:12 (night:day) cycles. Reductions of up to 99.69% in the carbon-fixation rates as compared with cultures under continuous illumination were obtained. (c) 2008 Elsevier B.V. All rights reserved.
Subject: Photobioreactor
Microalgae/cyanobacteria
CO2 biofixation
Photoperiod
Country: Suíça
Editor: Elsevier Science Sa
Rights: fechado
Identifier DOI: 10.1016/j.cep.2008.04.007
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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