Effect of light cycles (night/day) on CO2 fixation and biomass production by microalgae in photobioreactors
Effect of light cycles (night/day) on CO2 fixation and biomass production by microalgae in photobioreactors
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DOI：
10.1016/j.cep.2008.04.007
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发表时间：
2009-01-01
影响因子：
4.3
通讯作者：
Franco, Telma Teixeira
中科院分区：
文献类型：
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作者：
Jacob-Lopes, Eduardo;Gimenes Scoparo, Carlos Henrique;Franco, Telma Teixeira
本研究的目的是评估光周期油的影响，生物量的生产和二氧化碳固定率使用光合培养的蓝藻Aphanothece microscopica Nageli在鼓泡塔光生物反应器。培养在35 ℃的温度下进行，空气中富含浓度为15%的二氧化碳，光子通量密度为150 μ mol m（-2）s（-1）。评价的光照周期为0：24、2：22、4：20。分别为6：18、8：16、10：14、12：12、14：10、16：8、18：6、20：4、22：2和24：0（夜间：白天）。所获得的结果表明，光周期的持续时间是光生物反应器的性能的决定性因素。除了12：12（夜晚：白天）周期外，生物量生产和二氧化碳固定的线性减少与光照期持续时间的减少是明显的。与连续光照下的培养物相比，碳固定率降低了99.69%。(c)2008 Elsevier B. V.保留所有权利。
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.