title: Life cycle assessment of microalgae-based aviation fuel: Influence of lipid content with specific productivity and nitrogen nutrient effects.
abstract: The aim of this work is to compare the life cycle assessments of low-N and normal culture conditions for a balance between the lipid content and specific productivity. In order to achieve the potential contribution of lipid content to the life cycle assessment, this study established relationships between lipid content (nitrogen effect) and specific productivity based on three microalgae strains including Chlorella, Isochrysis and Nannochloropsis. For microalgae-based aviation fuel, the effects of the lipid content on fossil fuel consumption and greenhouse gas (GHG) emissions are similar. The fossil fuel consumption (0.32-0.68MJ·MJ-1MBAF) and GHG emissions (17.23-51.04gCO2e·MJ-1MBAF) increase (59.70-192.22%) with the increased lipid content. The total energy input decreases (2.13-3.08MJ·MJ-1MBAF, 14.91-27.95%) with the increased lipid content. The LCA indicators increased (0-47.10%) with the decreased nitrogen recovery efficiency (75-50%).
authors.affiliation: School of Energy and Power Engineering, Energy and Environment International Centre, Beihang University, 37 Xueyuan Road, Haidian District, Beijing 100191, PR China.
authors.forename: Fang
authors.initials: F
authors.lastname: Guo
authors.affiliation: School of Energy and Power Engineering, Energy and Environment International Centre, Beihang University, 37 Xueyuan Road, Haidian District, Beijing 100191, PR China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhao
authors.affiliation: School of Energy and Power Engineering, Energy and Environment International Centre, Beihang University, 37 Xueyuan Road, Haidian District, Beijing 100191, PR China.
authors.forename: Lusi
authors.initials: L
authors.lastname: A
authors.affiliation: School of Energy and Power Engineering, Energy and Environment International Centre, Beihang University, 37 Xueyuan Road, Haidian District, Beijing 100191, PR China. Electronic address: yangxiaoyi@buaa.edu.cn.
authors.forename: Xiaoyi
authors.initials: X
authors.lastname: Yang
mesh_terms: D001359:Aviation; D056804:Biofuels / Q000382:microbiology*; D005579:Fossil Fuels; D008055:Lipids / Q000737:chemistry; D058086:Microalgae
chemical_list: D056804:Biofuels; D005579:Fossil Fuels; D008055:Lipids
keywords: Life cycle assessment; Lipid content; Microalgae-based aviation fuel; Nitrogen nutrient; Relationship model