生物燃料
营养物
环境科学
生物柴油
废水
生物能源
可再生能源
生物柴油生产
生命周期评估
生物量(生态学)
污水处理
藻类生质燃料
生物炼制
环境工程
制浆造纸工业
废物管理
生态学
生产(经济)
生物
工程类
宏观经济学
催化作用
经济
生物化学
作者
Jia Yang,Ming Xu,Xuezhi Zhang,Qiang Hu,Milton R. Sommerfeld,Yongsheng Chen
标识
DOI:10.1016/j.biortech.2010.07.017
摘要
This research examines the life-cycle water and nutrients usage of microalgae-based biodiesel production. The influence of water types, operation with and without recycling, algal species, geographic distributions are analyzed. The results confirm the competitiveness of microalgae-based biofuels and highlight the necessity of recycling harvested water and using sea/wastewater as water source. To generate 1 kg biodiesel, 3726 kg water, 0.33 kg nitrogen, and 0.71 kg phosphate are required if freshwater used without recycling. Recycling harvest water reduces the water and nutrients usage by 84% and 55%. Using sea/wastewater decreases 90% water requirement and eliminates the need of all the nutrients except phosphate. The variation in microalgae species and geographic distribution are analyzed to reflect microalgae biofuel development in the US. The impacts of current federal and state renewable energy programs are also discussed to suggest suitable microalgae biofuel implementation pathways and identify potential bottlenecks.
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