A
triglyceride-to-
fuel conversion process including the steps of (a) preconditioning unsaturated triglycerides by catalytic conjugation, cyclization, and cross-link steps; (b) contacting the modified triglycerides with hot-compressed water containing a catalyst, wherein
cracking,
hydrolysis,
decarboxylation,
dehydration,
aromatization, or
isomerization, or any combination thereof, of the modified triglycerides produce a crude
hydrocarbon oil and an aqueous phase containing
glycerol and lower molecular weight molecules, and (c) refining the crude
hydrocarbon oil to produce various grades of biofuels. A
triglyceride-to-
fuel conversion process further including the steps of (a) carrying out anaerobic
fermentation and
decarboxylation /
dehydration, wherein the anaerobic
fermentation produces
hydrogen, volatile acids, and alcohols from fermentable feedstocks, and the
decarboxylation /
dehydration produces alkenes from the volatile acids and alcohols, respectively; (b) feeding the alkenes to the cyclization process; (c) feeding the
hydrogen to the post refining process; and (d) recycling the aqueous phase containing
glycerol to the decarboxylation / dehydration process. A
biofuel composition including straight-chain, branched and cyclo paraffins, and aromatics. The paraffins are derived from conversion of triglycerides. The aromatics are derived from conversion of either triglycerides,
petroleum, or
coal.