Ethyl biodiesel production from non-edible oils of Balanites aegyptiaca, Azadirachta indica, and Jatropha curcas seeds – Laboratory scale development. (October 2016)

• Record Type: Journal Article
• Authors: Nitièma-Yefanova, Svitlana; Coniglio, Lucie; Schneider, Raphaël; Nébié, Roger H.C.; Bonzi-Coulibaly, Yvonne L.
• Is Part Of: Renewable energy. Volume 96:Part A(2016)
• Page Start: 881
• Page End: 890
• Publication Date: 2016-10
• Subjects: Ethyl biodiesel -- Non-edible vegetable oils -- Two-stage procedure -- Single homogeneous catalyst -- Intermediate glycerol addition; AI Azadirachta indica -- ALSI Automatic liquid sampler injector system -- BA Balanites aegyptiaca -- DG Diglyceride(s) -- EO Ethyl oleate -- EtOH Ethanol -- FAEE Fatty acid ethyl ester(s) -- FAME Fatty acid methyl ester(s) -- FFA Free fatty acid(s) -- FID Flame ionization detector -- g[KOH] Global catalyst concentration related to the whole of the reaction -- GC Gas-chromatography -- gMR Global molar ratio related to the whole reaction -- IS Internal standard -- JC Jatropha curcas -- [KOH]i Catalyst concentration related to the ith stage -- MG Monoglyceride(s) -- MHD Methyl heptadecanoate -- MRsi Alcohol to oil molar ratio related to the ith stage -- MS Mass spectrometry -- NEVO Non-edible vegetable oil(s) -- S.I. Supporting information -- s[KOH] Catalyst concentration related to each stage of the reaction -- SBO Soybean oil -- si ith stage -- sMR Alcohol to oil molar ratio related to each stage of the reaction -- TG Triglyceride(s) -- xi mass proportion of the [alcohol – catalyst] mixture corresponding to the ith fraction added for the ith stage; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.renene.2016.04.100
• Languages: English
• ISSNs: 0960-1481

Abstract

Abstract: By starting first at the laboratory scale, optimal operating conditions for the reaction unit aimed at producing ethyl biodiesels from non-edible vegetable oils (NEVO) were determined with the ultimate objective of proposing an on-farm processing technology that should be sustainable for emerging countries. Three NEVO widely available in Burkina Faso were selected: Balanites aegyptiaca (BA), Azadirachta indica (AI), and Jatropha curcas (JC) oils. Their conversion to fatty acid ethyl esters (FAEE) was conducted via a two-stage procedure under atmospheric pressure: an alkali-catalyzed ethanolysis at ambient temperature for the BA and AI oils (leading to 93 and 87 wt.% FAEE respectively) and an acid-catalyzed ethanolysis at the normal boiling of the alcohol for the JC oil (leading to 89 wt.% FAEE). Based on the intermediate addition of glycerol at ambient temperature, the two-stage procedure combines chemical kinetics, chemical equilibrium, and phase equilibrium phenomena. Graphical abstract: Highlights: Three non-edible vegetable oils were converted in ethyl biodiesels. A two-stage procedure is used (only one catalyst with intermediate addition of glycerol). The procedure uses the coupling of the involved kinetic and thermodynamic phenomena. The proposal: a compromise between high yields and low energy and material inputs.