Efficacy of Catalysts in the Batch Esterification of the Fatty Acids of Thevetia Peruviana Seed Oil

Oluwaniyi, Omolara O.; Ibiyemi, Samuel A.

doi:10.4314/jasem.v7i1.17160

Cited by 8 publications

(3 citation statements)

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“…Consequently, using acidic catalysis facilitates both the biodiesel producing transesterification and esterification reactions [ 25 ]. Studies of the catalytic activities of HCl and H 2 SO 4 in the transesterification of Thevetia peruviana seed oil, cotton seed oil, and vegetable oil, among others, showed that H 2 SO 4 exhibited better catalytic activity than HCl [ 36 , 37 ]. Therefore, for in situ transesterification using an alkaline or acidic catalyst, several reaction parameters should be considered such as the reaction temperature, the reaction time, the amount of catalyst, the amount of solvent, the water content, and the agitation speed [ 36 , 37 ].…”

Section: Resultsmentioning

confidence: 99%

“…Studies of the catalytic activities of HCl and H 2 SO 4 in the transesterification of Thevetia peruviana seed oil, cotton seed oil, and vegetable oil, among others, showed that H 2 SO 4 exhibited better catalytic activity than HCl [ 36 , 37 ]. Therefore, for in situ transesterification using an alkaline or acidic catalyst, several reaction parameters should be considered such as the reaction temperature, the reaction time, the amount of catalyst, the amount of solvent, the water content, and the agitation speed [ 36 , 37 ]. To obtain the highest yield of biodiesel, these variables were optimized using the Taguchi methods [ 38 ], employing an L9 three-level-four-factor orthogonal array matrix [ 34 ]; nine experiments were designed as shown in Tables 1 and 3 for an alkaline or an acidic catalyst, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Enhancement of Biodiesel Production from Marine Alga,Scenedesmussp. throughIn SituTransesterification Process Associated with Acidic Catalyst

Kim

Choi

Kang

et al. 2014

BioMed Research International

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The aim of this study was to increase the yield of biodiesel produced by Scenedesmus sp. through in situ transesterification by optimizing various process parameters. Based on the orthogonal matrix analysis for the acidic catalyst, the effects of the factors decreased in the order of reaction temperature (47.5%) > solvent quantity (26.7%) > reaction time (17.5%) > catalyst amount (8.3%). Based on a Taguchi analysis, the effects of the factors decreased in the order of solvent ratio (34.36%) > catalyst (28.62%) > time (19.72%) > temperature (17.32%). The overall biodiesel production appeared to be better using NaOH as an alkaline catalyst rather than using H2SO4 in an acidic process, at 55.07 ± 2.18% (based on lipid weight) versus 48.41 ± 0.21%. However, in considering the purified biodiesel, it was found that the acidic catalyst was approximately 2.5 times more efficient than the alkaline catalyst under the following optimal conditions: temperature of 70°C (level 2), reaction time of 10 hrs (level 2), catalyst amount of 5% (level 3), and biomass to solvent ratio of 1 : 15 (level 2), respectively. These results clearly demonstrated that the acidic solvent, which combined oil extraction with in situ transesterification, was an effective catalyst for the production of high-quantity, high-quality biodiesel from a Scenedesmus sp.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Enhancement of Biodiesel Production from Marine Alga,Scenedesmussp. throughIn SituTransesterification Process Associated with Acidic Catalyst

Kim

Choi

Kang

et al. 2014

BioMed Research International

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“…Homogeneous acids such as H 2 SO 4 and H 3 PO 4 [2][3][4] represent the most commonly used catalysts for most of the important esterification reactions. However, these acids are corrosive, hazardous, used in more than stoichiometric amounts, and difficult to recover from reaction mixtures.…”

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confidence: 99%

Catalytic Performance of Nano-SiO2-Supported Preyssler Heteropolyacid in Esterification of Salicylic Acid with Aliphatic and Benzylic Alcohols

Bamoharram

Heravi

Ebrahimi

et al. 2011

Chinese Journal of Catalysis

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Alternative crops for biodiesel feedstock.

Razón¹

2009

CABI Reviews

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Biodiesel, the name popularly given to fatty acid alkyl esters, has become an attractive option for the replacement of petroleum diesel ('petrodiesel'). While its overall impact on the greenhouse effect continues to be debated, other qualities of biodiesel are unquestioned. Biodiesel is biodegradable, generally non-toxic and has superior lubricity to petrodiesel. Overall emissions are greatly reduced. The bulk of the feedstock for its production comes from renewable resources and when biodiesel is used as a blend (up to 20%); no changes are required for existing diesel engines. However, it is still too costly and about 60-80% of the cost for biodiesel comes from the feedstock. Concerns have been raised about the propriety of using food for fuel. Proposed alternative feedstock such as Jatropha curcas address some of these concerns but have their own disadvantages. This paper is a comprehensive review of recent progress on alternative crops for feedstock and addresses the issues that may ultimately lead to their success or failure: engine performance, yield, fatty acid profile, unique minor components, unique fatty acids, toxicity and harvestability. The use of agricultural wastes, used or waste oil and microbial fats is also discussed. The conclusion is reached that a blend of oils and used oils may be the best approach for the immediate future while genetically modified plants and microalgae may provide a longer term solution.

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Efficacy of Catalysts in the Batch Esterification of the Fatty Acids of Thevetia Peruviana Seed Oil

Cited by 8 publications

References 0 publications

Enhancement of Biodiesel Production from Marine Alga,Scenedesmussp. throughIn SituTransesterification Process Associated with Acidic Catalyst

Enhancement of Biodiesel Production from Marine Alga,Scenedesmussp. throughIn SituTransesterification Process Associated with Acidic Catalyst

Catalytic Performance of Nano-SiO2-Supported Preyssler Heteropolyacid in Esterification of Salicylic Acid with Aliphatic and Benzylic Alcohols

Alternative crops for biodiesel feedstock.

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