期刊
BIORESOURCE TECHNOLOGY
卷 129, 期 -, 页码 177-181出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.10.162
关键词
Wastewater treatment; Chlorella vulgaris; Biodiesel production; Fatty acids; Ammonia
资金
- Shanghai Subject Chief Scientist Program [10XD1404200]
- [NSC101-3113-E-006-015-]
- [NSC101-3113-P-110-002-]
The feasibility of cultivating Chlorella vulgaris with wastewater containing high ammonia nitrogen concentrations was examined. The average specific growth rate of C vulgaris was 0.92 d(-1) at 17 mg L-1 NH4+-N, but declined to 0.33 d(-1) at NH4+-N concentrations of 39-143 mg L-1. At 39 mg L-1 NH4+-N, lipid productivity reached a maximum value (23.3 mg L-1 d(-1)) and dropped sharply at higher NH4+-N levels, which demonstrated NH4+-N should be controlled for biodiesel production. C16 and C18 fatty acids accounted for 80% of total fatty acids. Increasing NH4+-N from 17 to 207 mg L-1 yielded additional short-chain and saturated fatty acids. Protein content was in positive correlation with NH4+-N content from 17 mg L-1 (12%) to 207 mg L-1 (42%). Carbohydrate in the dried algae cell was in the range of 14-45%, with a peak value occurring at 143 mg L-1 NH4+-N. The results demonstrate that product quality can be manipulated by NH4+-N concentrations of the initial feeds. (C) 2012 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据