期刊
BIOFUELS-UK
卷 6, 期 1-2, 页码 37-44出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/17597269.2015.1045274
关键词
light intensity; pH condition; Scenedesmus species; biomass; lipid
The physiological factors for microalgae cultivation are the preliminary steps to overcome the potential biomass demand. In this regard, the influence of light intensity (at six levels: 27, 40.5, 54, 67.5, 81 and 94.5 mu mol m(-2) s(-1)) and pH conditions (5.0, 6.0, 7.0, 8.0 and 9.0) on the growth and lipid production of Scenedesmus species ADIITEC-II and GUBIOTJT116 was compared in the batch culture. Among the studied species, maximum specific growth (0.334 +/- 0.002 day(-1)) and highest biomass yield (0.41 +/- 0.021 g L-1) was achieved for Scenedesmus species ADIITEC-II at light intensity 81 mu mol m(-2) s(-1). Similarly, Scenedesmus species GUBIOTJT116 showed increased growth and biomass production at 81 mu mol m(-2) s(-1). However, illumination under 94.5 mu mol m(-2) s(-1) showed higher lipid production (0.533 +/- 0.001 g L-1 and 0.551 +/- 0.001 g L-1) for Scenedesmus sp. ADIITEC-II and GUBIOTJT116, respectively. The significant variation in effective pH tolerance, growth and biomass production was observed in the studied pH range. The result obtained in this study provides a potential insight of the strains and could be further explored to improve the biomass and lipid yield.
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