Potential of Monoraphidium minutum for carbon sequestration and lipid production in response to varying growth mode

作者：Patidar Shailesh Kumar; Mitra Madhusree; George Basil; Soundarya R; Mishra Sandhya^*

来源：Bioresource Technology, 2014, 172: 32-40.

DOI：10.1016/j.biortech.2014.08.070

• Biodiesel
• Flue gas
• Intermittent CO2 supply
• Mixotrophic
• Monoraphidium minutum

Mixotrophic growth at flask level and, autotrophic-mixotrophic and autotrophic growth in photobioreactor by utilizing CO2/air/flue gas were checked for the isolated strain of Monoraphidium minutum from polluted habitat. Our study confirmed that it is a saturated fatty acid rich (30.92-68.94%) microalga with lower degree of unsaturation oil quality (42.06-103.99) making it potential biodiesel producing candidate. It showed encouraging biomass productivity (80.3-303.8 mgl(-1) day(-1)) with higher total lipid (22.80-46.54%) under optimum glucose, fructose, microalgal biodiesel waste residue and sodium acetate fed mixotrophic conditions. The pH control by intermittent CO2, continuous illumination with 30% flue gas, and utilization of biodiesel glycerin were effective schemes to ameliorate either biomass productivity or % lipids or both of these parameters at photobioreactor scale (7.5 L working volume). The modulation of environmental variables (pH control, CO2 and organic substrates concentration) could augment % saturated fatty acids, such as C16:0.

• 出版日期2014-11
• 单位海洋化工研究院有限公司