Bioenergy has become attractive as alternatives of gradually exhausted fossil fuel. Obtaining high grade
bioenergy from lignocellulose is attractive that can gradually meet the demand. This study reported biogas
and biodiesel were produced from corncob by a two-step bioprocess, biogas was produced from corncob
by anaerobic fermentation, then biogas residue was converted by black soldier fly larvae, and then
biodiesel was produced from larvae grease. 86.70 L biogas was obtained from 400 g corncob with the
accumulation of biogas yield of 220.71 mL/g VSadded by anaerobic digestion. Besides, 3.17 g of biodiesel
was produced from grease after inoculating black soldier fly larvae into 400 g biogas residue.
Meanwhile, the results showed that the addition of black soldier fly larvae could be effective for the
degradation of lignocellulose and the accumulation of grease.