(2017) Bioresource Technology_Rapid biodiesel synthesis from waste pepper seeds without lipid isolation step

Lee J., Kim J., Ok Y.S., Kwon E.E.

(Elsevier Ltd) Bioresource Technology ISSN: 9608524 Vol.239 Issue. Article No. DOI: 10.1016/j.biortech.2017.05.011

In situ transformation of lipid in waste pepper seeds into biodiesel (i.e., fatty acid methyl esters: FAMEs) via thermally-induced transmethylation on silica was mainly investigated in this study. This study reported that waste pepper seeds contained 26.9 wt% of lipid and that 94.1% of the total lipid in waste pepper seeds could be converted into biodiesel without lipid extraction step for only ∼1 min reaction time. This study also suggested that the optimal temperature for in situ transmethylation was identified as 390 °C. Moreover, comparison of in situ process via the conventional transmethylation catalyzed by H2SO4 showed that the introduced biodiesel conversion in this study had a higher tolerance against impurities, thereby being technically feasible. The in situ biodiesel production from other oil-bearing food wastes can be studied. © 2017 Elsevier Ltd

This work was supported by a National Research Foundation of Korea (NRF) Grant funded by the Korean Government (Ministry of Education, Science and Technology (MEST)) (No. NRF-2016R1D1A1B03933027).