文章基本信息

标题：Hydroxyapatite catalyzed hydrothermal liquefaction transforms food waste from an environmental liability to renewable fuel
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作者：Heather O. LeClerc ; Geoffrey A. Tompsett ; Alex D. Paulsen 等
期刊名称：iScience
印刷版ISSN：2589-0042
出版年度：2022
卷号：25
期号：9
页码：1-21
DOI：10.1016/j.isci.2022.104916
语种：English
出版社：Elsevier
摘要：SummaryFood waste is an abundant and inexpensive resource for the production of renewable fuels. Biocrude yields obtained from hydrothermal liquefaction (HTL) of food waste can be boosted using hydroxyapatite (HAP) as an inexpensive and abundant catalyst. Combining HAP with an inexpensive homogeneous base increased biocrude yield from 14 ± 1 to 37 ± 3%, resulting in the recovery of 49 ± 2% of the energy contained in the food waste feed. Detailed product analysis revealed the importance of fatty-acid oligomerization during biocrude formation, highlighting the role of acid-base catalysts in promoting condensation reactions. Economic and environmental analysis found that the new technology has the potential to reduce US greenhouse gas emissions by 2.6% while producing renewable diesel with a minimum fuel selling price of $1.06/GGE. HAP can play a role in transforming food waste from a liability to a renewable fuel.Graphical abstractDisplay OmittedHighlights•Catalysts boost yields obtained from hydrothermal liquefaction (HTL) of food waste•HAP-catalyzed HTL has the potential to reduce US greenhouse gas emissions by 2.6•Catalytic food waste HTL can produce fuel with an MFSP of $1.06/GGEChemistry; Chemical engineering; Catalysis