News International Sugar Journal

Turning food wastes into energy-dense biofuels [Full subscriber]

Researchers from the Department of Energy’s Pacific Northwest National Laboratory (PNNL) have successfully converted food waste homes and businesses into an energy-dense biofuel. PNNL has deployed customized equipment known as the Muffin Monster that grinds up everything from bones and gristle to seeds, wrappers and packaging. The resulting mush undergoes hydrothermal liquefaction (HTL) – a process that uses hot, pressurized water in the condensed phase to convert biomass to a thermally stable oil product, also known as “biocrude”, which can then be thermo-catalytically upgraded to hydrocarbon fuel blendstocks. To be cost-competitive, the central engineering challenge is to improve yields. “The…

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