Optimization of a two-stage process for biodiesel production from shea butter using Response Surface Methodology

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dc.contributor.authorAjala, E.O.
dc.contributor.authorAberuagba, F.
dc.contributor.authorOlaniyan, A.M.
dc.contributor.authorAjala, M.A.
dc.contributor.authorSunmonu, M.O.
dc.date.accessioned2019-10-30T09:52:36Z
dc.date.available2019-10-30T09:52:36Z
dc.date.issued2017
dc.description.abstractThe challenges of biodiesel production from high free fatty acid (FFA) shea butter (SB) necessitated this study. The reduction of %FFA of SB by esterification and its subsequent utilization by transesterification for biodiesel production in a two stage process for optimization studies was investigated using response surface methodology based on a central composite design (CCD). Four operating conditions were investigated to reduce the %FFA of SB and increase the %yield of shea biodiesel (SBD). The operating conditions were temperature (40–60 C), agitation speed (200– 1400 rpm), methanol (MeOH): oil mole ratio: 2:1–6:1 (w/w) for esterification and 4:1–8:1 (w/w) for transesterification and catalyst loading: 1–2% (H2SO4, (v/v) for esterification and KOH, (w/w) for transesterification. The significance of the parameters obtained in linear and non-linear form from the models were determined using analysis of variance (ANOVA). The optimal operating conditions that gave minimum FFA of 0.26% were 52.19 C, 200 rpm, 2:1 (w/w) and 1.5% (v/v), while those that gave maximum yield of 92.16% SBD were 40 C, 800 rpm, 7:1 (w/w) and 1% (w/w). The p-value of <0.0001 for each of the stages showed that the models were significant with R2 of 0.96 each. These results indicate the reproducibility of the models and showed that the RSM is suitable to optimize the esterification and transesterification of SB for SBD production. Therefore, RSM is a useful tool that can be employed in industrial scale production of SBD from high FFA SB.en_US
dc.identifier.citationAjala, E.O., Aberuagba, F., Olaniyan, A.M., Ajala, M.A. & Sunmonu, M.O (2017): Optimization of a two-stage process for biodiesel production from shea butter using Response Surface Methodology. Egyptian Journal of Petroleum (EGYJP), 26: 943-955. Published by Elsevier. doi: 10.1016/j.ejpe.2016.11.005en_US
dc.identifier.urihttp://hdl.handle.net/123456789/3138
dc.language.isoenen_US
dc.publisherEgyptian Journal of Petroleum (EGYJP). Published by Elsevier. doi: 10.1016/j.ejpe.2016.11.005en_US
dc.subjectEsterificationen_US
dc.subjectTransesterificationen_US
dc.subjectBiodieselen_US
dc.subjectOptimizationen_US
dc.subjectResponse surface methodologyen_US
dc.titleOptimization of a two-stage process for biodiesel production from shea butter using Response Surface Methodologyen_US
dc.typeArticleen_US

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