Effects of Transesterification Variables on the Characteristics of the Methyl Esters Obtained from Four Virgin Tropical Seed Oils in Nigeria

Igbum, Ogbene Gillian

doi:10.9734/irjpac/2014/2081

Cited by 2 publications

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“…The present work evaluated the production of biodiesel from the seed oil of Hura crepitans. Biodiesel from seed oil of Hura crepitans was recently reported by Igbum et al [18] but this was not in detail as some important properties were not evaluated; moreover, the production method reported in the present study is different from what was reported by Igbum et al The present method involved an acid catalyzed pretreatment step in order to reduce the free fatty acid content of the oil thus preventing the formation of emulsion usually encountered during production when seed oils with some level of free fatty acid content are used. The production of the biodiesel was monitored and confirmed using 1 HNMR and 13 CNMR.…”

Section: Parametersmentioning

confidence: 89%

Hura crepitans Seed Oil: An Alternative Feedstock for Biodiesel Production

2014

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Oil was extracted from the seed ofHura crepitansusing hexane in a soxhlet extractor and analyzed for iodine value, saponification value and free fatty acid content. The dominant fatty acid in the oil was C18:2 (52.8±0.10%) while the iodine value was120.10±0.70 g iodine/100 g. Biodiesel was produced from the oil using a two-step reaction system involving a first step of pretreatment via esterification reaction and a second step via transesterification reaction. The pretreatment step showed that free fatty acid inHura crepitansseed oil can be reduced in a one-step pretreatment of esterification using H2SO4as catalyst. The biodiesel produced fromHura crepitansseed oil had an acid value of0.21±0.00 mg KOH/g, flash point of 152 ± 1.10°C, copper strip corrosion value of 1A, calorific value of39.10±0.30 mJ/kg, cetane number of45.62±0.30, and density of0.86±0.02 g cm−3. The process gave a biodiesel yield of98.70±0.40% with properties within the recommended values of EN 14214.

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Section: Parametersmentioning

confidence: 89%

Hura crepitans Seed Oil: An Alternative Feedstock for Biodiesel Production

2014

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“… Tsakins et al (1999) used n-hexane and mixture of chloroform/methanol in Moringa olifera seed oil extraction and obtained 35.7% and 31.2% oil yields respectively. Also, Igbum et al (2012) extracted palm kernel oil (PKO) using solvent extraction method and a yield of 42.0 % was achieved.…”

Section: Introductionmentioning

confidence: 99%

Application of soft-computing techniques for statistical modeling and optimization of Dyacrodes edulis seed oil extraction using polar and non-polar solvents

Esonye¹,

Onukwuli

Anadebe³

et al. 2021

Heliyon

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This research presents optimal factor evaluation for maximum Dyacrodes edulis seed oil (DESO) extraction by applying central composite design (CCD) based on Box-Behnken (BB) experimental design of response surface methodology (RSM) and Artificial neural network (ANN) on feed forward-back propagation (FFBP) of Levenberg Marquardt (LM) training algorithm. Polar solvents (ethanol and combination of methanol and chloroform (M/C)) and non-polar solvents (n-hexane) were used for the extraction. The RSM optimal predicted oil yields were 45.21%, 38.61% and 30.87% while experimental values were 46.01%, 40.71% and 32.45% for n-hexane, ethanol and M/C respectively. The RSM optimum conditions were particle size of 450.67, 451.19 and 450.22μm, extraction time of 55.57, 55.16 and 56.11min and solute/solvent ratio of 0.19, 0.16 and 0.18 g/ml for n-hexane, ethanol and M/C respectively. The ANN-GA optimized conditions showed 5.14, 5.81 and 2.12 % higher DESO yields at 1.10, 0.26 and 0.65% smaller particle sizes, 5.47, 0.30 and 0.62 % faster extraction rate, and 24, 11.11 and 10% more solute requirement, for n-hexane, ethanol and M/C solvents respectively. The particle size was found to be the most significant factor. ANN and RSM established good correlations with the experimental data but ANN showed higher predictive supremacy than RSM based on its higher values of R 2 and lower error indices. Also, ANN-GA provided more economical optimal DESO extraction route. The physico-chemical characteristics, functional groups and fatty acid compositions of the seed oil compared with literature values and suggest high commercial values for DESO. Therefore, the obtained results present a viable method to harness the useful and highly potential seed oil from dyacrodes edulis for many industrial applications.

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Effects of Transesterification Variables on the Characteristics of the Methyl Esters Obtained from Four Virgin Tropical Seed Oils in Nigeria

Cited by 2 publications

References 0 publications

Hura crepitans Seed Oil: An Alternative Feedstock for Biodiesel Production

Hura crepitans Seed Oil: An Alternative Feedstock for Biodiesel Production

Application of soft-computing techniques for statistical modeling and optimization of Dyacrodes edulis seed oil extraction using polar and non-polar solvents

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