Integrated process of extraction and reaction of rice bran oil to produce biodiesel

IF 3.4 3区工程技术 Q2 CHEMISTRY, PHYSICAL

Journal of Supercritical Fluids Pub Date : 2025-03-18 DOI:10.1016/j.supflu.2025.106598

Suelly R. Hollas , Bárbara Moreira , Milena Garcia , Michel Corrente , Leoni Brondani , Roger Wagner , Flávio D. Mayer , Fernanda de Castilhos , Ederson R. Abaide

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引用次数: 0

Abstract

The production of fatty acid methyl esters (FAME) and fatty acid ethyl esters (FAEE) from rice bran (RB) by integrated extraction and reaction process with pressurized ethanol and dimethyl carbonate (DMC) as solvents was evaluated in this research. The first step was pressurized liquid extraction (PLE) in a semi-continuous mode (120 and 150 °C, with a solvent flow rate of 4 and 8 mL min⁻¹) and sequentially the solvent and oil were directed to a continuous reaction unit (250 °C and 300 °C) under subcritical and supercritical conditions. Soxhlet extraction was performed for comparative purposes with the PLE. The use of DMC in PLE resulted in a high oil yield (20.08 ± 0.20 % (w/w)), and lipids presented oleic and linoleic acids as the major fatty acids in their composition, with high content of free fatty acids. In the sequential reaction, DMC at 250 °C provided the highest FAME yield (96.97 wt% in 20 min).

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来源期刊

Journal of Supercritical Fluids 工程技术-工程：化工

CiteScore

7.60

自引率

10.30%

发文量

236

审稿时长

56 days

期刊介绍： The Journal of Supercritical Fluids is an international journal devoted to the fundamental and applied aspects of supercritical fluids and processes. Its aim is to provide a focused platform for academic and industrial researchers to report their findings and to have ready access to the advances in this rapidly growing field. Its coverage is multidisciplinary and includes both basic and applied topics. Thermodynamics and phase equilibria, reaction kinetics and rate processes, thermal and transport properties, and all topics related to processing such as separations (extraction, fractionation, purification, chromatography) nucleation and impregnation are within the scope. Accounts of specific engineering applications such as those encountered in food, fuel, natural products, minerals, pharmaceuticals and polymer industries are included. Topics related to high pressure equipment design, analytical techniques, sensors, and process control methodologies are also within the scope of the journal.