Abstract
AbstractAqueous extraction for protein isolation from oilseeds is a promising alternative to the conventional hexane‐based solvent extraction widely used in the industry. However, during aqueous extraction, a stable oil‐in‐water emulsion is produced that results in decreased oil yield. We demonstrated the conversion of this aqueous extract into renewable hydrocarbons on 20%w/w Ni/C at 315 °C and at an initial hydrogen headspace pressure of 1.95 MPa. Moderate yield (>50%) and selectivity (~70%) of hydrocarbons within the diesel range were obtained within 12 hours of reaction without additional external hydrogen input. It was also shown that a prolonged experimental run at 305 °C can result in near‐complete conversion of triacylglycerol oil into diesel‐range hydrocarbons (70%) and oxygenates (9%) with selectivity of ~80%. Although the study demonstrates for the first time the possibility of integrating aqueous extraction of protein with renewable diesel production in a hydrothermal medium, the limitations and challenges experienced during this initial study justify additional work that is presently underway.
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