Pre-functionalized and lipid-dense post-hydrolysis rice bran as feedstock for FAME production via non-isothermal in-situ (trans)esterification with subcritical methanol

Go, Alchris Woo, Quijote, Kristelle L., Kathlyn, Roxanne, Alivio, Alivio, Ju, Yi-Hsu, Gunarto, Chintya, Angkawijaya, Artik Elisa, Santoso, Shella Permatasari and Yuliana, Maria (2022) Pre-functionalized and lipid-dense post-hydrolysis rice bran as feedstock for FAME production via non-isothermal in-situ (trans)esterification with subcritical methanol. Pre-functionalized and lipid-dense post-hydrolysis rice bran as feedstock for FAME production via non-isothermal in-situ (trans)esterification with subcritical methano, 189. pp. 13-24. ISSN p-ISSN: 0960-1481 e-ISSN: 1879-0682

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Abstract

In-situ (trans)esterification (ISTE) of lipids in post-hydrolyzed rice bran (PHRB) with methanol under subcritical conditions has proven to be a suitable feedstock for fatty acid methyl ester (FAME) production. The lipids from PHRB had a fatty acid profile which was primarily composed of oleic (39 wt%) and linoleic (36 wt%) acids, and could potentially result in biodiesel with favorable properties. The PHRBs which were lipid-dense (31.35 and 48.98 wt% on a dry basis) and pre-functionalized (0.55 and 1.21 mmol Hþ/g dry and lipid-free PHRB), were successfully processed non-isothermally from 30 to 150 �C at high reactor loading of 85% and a solvent-to-solid ratio (SSR) of 4e6 mL/g dry PHRB, which resulted in yields of 26.48 and 35.11 g/100 g dry PHRB, equivalent to a conversion of ~90% of the fatty acids. Due to the acquired acid sites in the collected PHRB, no additional catalyst was required. Elemental analysis and FT-IR spectroscopy were carried out to test the presence of sulfur and sulfonic sites in the PHRB residues. Furthermore, the recovered solids still exhibited substantial acid sites which were tested for activity through the esterification of oleic acid in methanol and were reused up to 7 cycles.

Item Type:	Article
Uncontrolled Keywords:	In-situ (trans)esterification Maximized utilization Post-hydrolysis rice bran Solid acid catalyst Subcritical methanol Renewable energy resource
Subjects:	Engineering > Chemical Engineering
Divisions:	Journal Publication
Depositing User:	F.X. Hadi
Date Deposited:	17 Nov 2023 02:09
Last Modified:	17 Nov 2023 02:09
URI:	http://repository.ukwms.ac.id/id/eprint/37369

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