期刊
BIORESOURCE TECHNOLOGY
卷 184, 期 -, 页码 444-452出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.10.075
关键词
Life cycle assessment; Techno-economic assessment; Microalgae; Biofuels; Productivity potential
资金
- U.S. Department of Energy, Bioenergy Technologies Office (BETO) [DE-AC36-08-GO28308]
Microalgae biofuel production has been extensively evaluated through resource, economic and life cycle assessments. Resource assessments consistently identify land as non-limiting and highlight the need to consider siting based on combined geographical constraints of land and other critical resources such as water and carbon dioxide. Economic assessments report a selling cost of fuel that ranges between $1.64 and over $30 gal (1) consistent with large variability reported in the life cycle literature, -75 to 534 g CO2-eq MJ (1). Large drivers behind such variability stem from differences in productivity assumptions, pathway technologies, and system boundaries. Productivity represents foundational units in these assessments with current assumed yields in various assessments varying by a factor of 60. A review of the literature in these areas highlights the need for harmonized assessments such that direct comparisons of alternative processing technologies can be made on the metrics of resource requirements, economic feasibility, and environmental impact. (C) 2014 Elsevier Ltd. All rights reserved.
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