Single‐step ultrasonic synthesis of biodiesel from crude <i>Jatropha curcas</i> oil

Choudhury, Hanif A.; Srivastava, Preeti Wanti; Moholkar, Vijayanand S.

doi:10.1002/aic.14371

Cited by 26 publications

(22 citation statements)

References 30 publications

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“…These data lead to a value of Ea = 25.51 kJ/mol. This value was relatively small, which reveals a great catalytic activity of the basic catalysts (KOH): lnk = −3068.5/T + 7.428; R 2 = 0.993 (8) The activation energy was similar to that obtained in rapeseed oil transesterification in the presence of co-solvents (21.88 kJ/mol) [31] and slightly lower than in the case of Jatropha curcas transesterification by ultrasound (31.29 and 57.33 kJ/mol) [32]. On the other hand, the activation energy in other catalysis-base transesterification through thermal heat were superior.…”

Section: Kinetic Studysupporting

confidence: 69%

Biodiesel by Transesterification of Rapeseed Oil Using Ultrasound: A Kinetic Study of Base-Catalysed Reactions

et al. 2018

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The objective of this work was to study the acceleration that ultrasound causes in the rate of biodiesel transesterification reactions. The effect of different operating variables, such as ultrasound power, catalyst (KOH) concentration and methanol:oil molar ratio, was studied. The evolution of the process was followed by gas chromatography, determining the concentration of methyl esters at different reaction times. The biodiesel was characterized by its density, viscosity, saponification and iodine values, acidity index, water content, flash and combustion points, cetane index and cold filter plugging point (CFPP), according to EN 14214 standard. High methyl ester yield and fast reaction rates were obtained in short reaction times. Ultrasound power and catalyst concentration had a positive effect on the yield and the reaction rate. The methanol:oil molar ratio also increased the yield of the reaction, but negatively influenced the process rate. The reaction followed a pseudo-first order kinetic model and the rate constants at several temperatures were determined. The activation energy was also determined using the Arrhenius equation. The main conclusion of this work is that the use of ultrasound irradiation did not require any additional heating, which could represent an energy savings for biodiesel manufacture.

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Section: Kinetic Studysupporting

confidence: 69%

Biodiesel by Transesterification of Rapeseed Oil Using Ultrasound: A Kinetic Study of Base-Catalysed Reactions

et al. 2018

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“…It has the advantage that both the esterification and transesterification reactions are catalyzed by chlorosulfonic acid. It also minimizes the inhibition in the esterification due to the water formed during the reaction and enhances the kinetics of the reaction [8].…”

Section: The Effect Of Catalyst Concentration and Time On The Processmentioning

confidence: 99%

Review of Various Feed Stocks used and the Operating Conditions for Biodiesel Production

Girish

Tjprc²

2018

IJMPERD

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The energy crisis has become an important global issue because of the depletion of non-renewable fossil fuels. Therefore there is a need to explore alternative sources to solve the energy security problem. Different sources are available for energy production among which biodiesel is considered to be effective for reducing the dependency on fossil fuels. Biodiesel production causes less adverse impacts on the environment compared to petroldiesel and even the fuel properties are superior. Transesterification reaction was employed for producing biodiesel from various feed-stocks such as edible oil, non-edible oils, animal fats and used cooking oil etc. Thus, the present study investigates the various precursor materials used for biodiesel production. It also reviews the types of catalysts used and the effect of operating conditions on the transesterification reaction.

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“…An in-house laboratory protocol was followed for biodiesel synthesis, in brief free fatty acid (FFA) analysis, acid esterification and transesterification together with methanol and catalyst mixture, separation of glycerol, washing and drying. FFA of a vegetable oils impacts on their transesterification reactions during biodiesel production [17,18]. 29.3% of FFA was measured from the JCO samples by following a standard method as described our recent work published [19].…”

Section: Experimental Design For Biodiesel Productionmentioning

confidence: 99%

Active Heterogeneous CaO Catalyst Synthesis fromAnadara granosa(Kerang) Seashells for Jatropha Biodiesel Production

et al. 2016

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Abstract. Heterogeneous catalysts are often used at large to produce biodiesel from non-edible vegetable crude oils such as Jatropha curcas oil (JCO). In this study, an active heterogeneous CaO catalyst was synthesized from a tropical biodiversity seashells Anadara granosa (A.granosa). The catalytic efficiency of A.granosa CaO was investigated in transesterification of JCO as biodiesel. The A.granosa CaO catalyst was synthesized using 'Calcination -hydration -dehydration' protocol. The spectral characterization of the catalyst were investigated by employing FT-IR, SEM, BET and BJH spectrographic techniques. The experimental design was executed with four reaction parameters that include catalyst concentration (CC), methanol ratio (MR), transesterification time (TT) and reaction temperature (RT). The JCO transesterification reactions as well as impact of reaction parameters on the Jatropha biodiesel yield (JBY) were analyzed. The sufficiency of the experimental results conformed through sequential validation tests, as a result, an average of 96.2% JMY was noted at optimal parametric conditions, CC of 3wt. %, TT of 120 min, MR of 5 mol. and RT of 60ºC at a constant agitation speed of 300rpm. An average JMY of 87.6% was resulted from the A.granosa CaO catalyst during their recycling and reuse studies up to third reuse cycle.

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Single‐step ultrasonic synthesis of biodiesel from crude Jatropha curcas oil

Cited by 26 publications

References 30 publications

Biodiesel by Transesterification of Rapeseed Oil Using Ultrasound: A Kinetic Study of Base-Catalysed Reactions

Biodiesel by Transesterification of Rapeseed Oil Using Ultrasound: A Kinetic Study of Base-Catalysed Reactions

Review of Various Feed Stocks used and the Operating Conditions for Biodiesel Production

Active Heterogeneous CaO Catalyst Synthesis fromAnadara granosa(Kerang) Seashells for Jatropha Biodiesel Production

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