Utilization of Organic Liquid Fertilizer in Microalgae Cultivation for Biodiesel Production

被引：0
作者：
Nhat Minh Dang
Kisay Lee
机构：
[1] Myongji University,Department of Environmental Engineering and Energy
来源：
Biotechnology and Bioprocess Engineering | 2018年 / 23卷
关键词：
Liquid fertilizer; nitrate starvation; lipid content; biodiesel;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The utilization of organic liquid fertilizer PAL-1 as the culture medium of the microalga Chlorella vulgaris was investigated for the purpose of biodiesel production. Cell growth and lipid accumulation in PAL-1 were evaluated and compared with those in the artificial medium BG-11. Cells showed mixotrophic growth when utilizing the organic liquid fertilizer PAL-1. The rates of cell growth (0.143 d-1) and N consumption (14.9 mg/L/d) in PAL-1 were almost the same as those in BG-11, under the presence of 2% CO2-enriched aeration and light irradiation. Lipid synthesis was triggered in PAL-1 on day 4, when nitrogen was completely consumed, and the lipid content reached up to 48% thereafter. Lipid productivity could be enhanced using repeated-batch cultivation in which cells were exposed to N limitation repeatedly, and thus lipid synthesis was induced while maintaining a sufficiently high cell density.
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页码：405 / 414
页数：9
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