Journal
JOHNSON MATTHEY TECHNOLOGY REVIEW
Volume 65, Issue 2, Pages 227-246Publisher
JOHNSON MATTHEY PUBL LTD CO
DOI: 10.1595/205651321X16024905831259
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Funding
- National Renewable Energy Laboratory
- US Department of Energy [DE-AC36-08GO28308]
- National Renewable Energy Laboratory, as part of the DOE Office of Energy Efficiency and Renewable Energy, Bioenergy Technologies Office
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Research efforts to convert microbial lipids into biofuels are on the rise, with a focus on understanding the complexities introduced by differences in lipid speciation and the presence of co-extracted compounds. Lipid cleanup steps can be introduced to produce suitable feedstocks for catalytic upgrading, overcoming the challenges in hydroprocessing microbial lipids.
Microbial lipids hold great promise as biofuel precursors, and research efforts to convert such lipids to renewable diesel fuels have been increasing in recent years. In contrast to the numerous literature reviews on growing, characterising and extracting lipids from oleaginous microbes, and on converting vegetable oils to hydrocarbon fuels, this review aims to provide insight into aspects that are specific to hydroprocessing microbial lipids. While standard hydrotreating catalysts generally perform well with terrestrial oils, differences in lipid speciation and the presence of co-extracted compounds, such as chlorophyll and sterols, introduce additional complexities into the process for microbial lipids. Lipid cleanup steps can be introduced to produce suitable feedstocks for catalytic upgrading.
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