小球藻作为一种绿色生物燃料工厂：生物柴油、沼气和可燃生物质生产的比较。
Chlorella vulgaris as a green biofuel factory: Comparison between biodiesel, biogas and combustible biomass production.
机构信息
Laboratory of Biochemical Engineering and Environmental Technology, Department of Chemical Engineering, University of Patras, 1 Karatheodori Str., University Campus, 26504 Patras, Greece.
Laboratory of Biochemical Engineering and Environmental Technology, Department of Chemical Engineering, University of Patras, 1 Karatheodori Str., University Campus, 26504 Patras, Greece.
出版信息
Bioresour Technol. 2019 Feb;273:237-243. doi: 10.1016/j.biortech.2018.11.017. Epub 2018 Nov 7.
Biofuels are viewed as the answer to safeguard the currently challenged energy security. To this end, the present study provides a comparison between approaches regarding microalgal biomass conversion to bioenergy, with a view on sustainable implementation. The energetic valorization of Chlorella vulgaris biomass cultivated under heterotrophic, sulfur-limited conditions was investigated through the biofuels biodiesel, biogas (biomethane) and combustible dry biomass. The lipid productivity can reach the value of 442.9 ± 6.5 mg L d containing suitable fatty acids for biodiesel production. Next, biochemical methane potential (BMP) assays yielded 360.9 ± 20.2 mL CH g VS under mesophilic conditions, while the calorific value of dry C. vulgaris biomass was measured as 24,538 ± 182 kJ kg (5,865 ± 43 kcal kg). Considering the downstream processing required in each approach, the most promising energy valorization method is anaerobic digestion able to reach values up to 20,862 kJ L day in continuous systems.
生物燃料被视为保障当前能源安全挑战的解决方案。为此，本研究比较了微藻生物质转化为生物能源的方法，着眼于可持续实施。通过生物燃料生物柴油、沼气（生物甲烷）和可燃干生物质，研究了在异养、硫限制条件下培养的普通小球藻生物质的能量增值。脂质生产力可达 442.9±6.5mg L d，含有适合生物柴油生产的脂肪酸。其次，在中温条件下，生化甲烷潜能（BMP）测定得到 360.9±20.2mL CH 4 g VS，而普通小球藻干生物质的热值为 24538±182kJ kg（5865±43kcal kg）。考虑到每种方法所需的下游处理，最有前途的能量增值方法是厌氧消化，在连续系统中能够达到高达 20862kJ L day 的值。
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