Kinetics models of transesterification reaction for biodiesel production: A theoretical analysis

Ezzati, Rohollah; Ranjbar, Shahram; Soltanabadi, Azim

doi:10.1016/j.renene.2020.12.055

Cited by 26 publications

(11 citation statements)

References 65 publications

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“…Due to these advantages, biodiesel has been receiving considerable reflection in recent years. Still, the production costs, which are entirely unacceptable worldwide, largely depend on the raw materials used, mainly oils and catalysts 7,8 . Biodiesel is commonly produced via transesterification process in the presence of a catalyst.…”

Section: Introductionmentioning

confidence: 99%

Exploration of agricultural residue ash as a solid green heterogeneous base catalyst for biodiesel production

Oloyede

Jekayinfa

Alade

et al. 2022

Engineering Reports

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Biodiesel is an economical and nonpolluting green fuel produced from the transesterification of oil and alcohol in the presence of a catalyst. Transesterification of vegetable oils with conventional (homogeneous) catalysts for biodiesel production is considered to have a promising future but they are nonrenewable and hazardous. The major setback is the increase in cost of production. High production cost, in terms of feedstock oil and catalyst acquisition is one of the major challenges facing the global commercialization and acceptance of biodiesel. Heterogeneous solid catalysts are currently replacing homogeneous catalysts because of their ability to overcome hurdles associated with homogeneous catalysts. This study discussed the development and feasibility of calcined ash from agricultural residues as a solid green heterogeneous base catalyst for biodiesel production without chemical degradation. Solid-calcined ash based catalysts are being developed primarily via calcination at suitable temperatures and have been used as catalysts without mixing with carrier compounds. The various agricultural residues used and the corresponding biodiesel yields were also discussed. The study also looked at some agricultural residues that could be targeted for high catalytic output. It was found that high biodiesel yields (80%-98%) were achieved with most of the crude oil raw materials used. The catalyst could be reused at least five (5) times. From the discussed literature, it was found that the current state of biodiesel production can be improved by using heterogeneous base catalysts made from agricultural residue calcined ash.

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Section: Introductionmentioning

confidence: 99%

Exploration of agricultural residue ash as a solid green heterogeneous base catalyst for biodiesel production

Oloyede

Jekayinfa

Alade

et al. 2022

Engineering Reports

View full text Add to dashboard Cite

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“…Transesterification is a reversible process (eqn (1)) that can be influenced by process parameters, as studies have shown that their effects can increase the reaction rate. 23 The rate is controlled only by the concentration of free fatty acids (FFAs). 14 The reaction typically occurs in three steps, with pseudo-first-order kinetics observed when alcohol concentration is excessive.Step 1: Triglyceride + Alcohol ⇌ Diglyceride + EsterStep 2: Diglyceride + Alcohol ⇌ Monoglyceride + EsterStep 3: Monoglyceride + Alcohol ⇌ Glycerine + EsterROOH + R′OH ⇌ RCOOR′ + H 2 O…”

Section: Resultsmentioning

confidence: 99%

“…Transesterication is a reversible process (eqn (1)) that can be inuenced by process parameters, as studies have shown that their effects can increase the reaction rate. 23 The rate is controlled only by the concentration of free fatty acids (FFAs). 14 The reaction typically occurs in three steps, with pseudo-rstorder kinetics observed when alcohol concentration is excessive.…”

Section: Kinetics Of the Reactionmentioning

confidence: 99%

Production and performance evaluation of biodiesel from Elaeis guineensis using natural snail shell-based heterogeneous catalyst: kinetics, modeling and optimisation by artificial neural network

et al. 2023

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“…12,15 In contrast, some studies have considered the three steps of the mechanistic process considering the kinetics of the transformation of di-and monoglycerides. 11,15,17,18 Some of the obtained kinetic parameters are condensed in Table 1.…”

Section: Esterification and Transesterificationmentioning

confidence: 99%

A review of the use of SrO in catalysts for biodiesel production

Tavizón‐Pozos,

Cruz‐Aburto

2023

Biofuels Bioprod Bioref

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SrO has attracted attention for its use as a heterogeneous catalyst in producing biodiesel from transesterification owing to its high alkaline character and low solubility in methanol. In studies conducted in this decade, reaction conditions such as the methanol–oil molar ratio, reaction time, catalyst loading and temperature have been optimized in these systems. Furthermore, several works have been carried out to improve the physicochemical properties and increase the leaching resistance of this material. Thus, the new trends in using SrO in transesterification reactions are that this oxide should be supported or combined with Al2O3, TiO2, ZrO2, or Fe2O3, CaO, metal–organic frameworks, zeolites or La2O3. It has been observed that strontium can form mixed crystalline phases with these oxides by increasing the (M2+O2−) pairs and Lewis basicity of the oxygens, resulting in increased basicity and catalytic activity. Moreover, the transition metal oxides may provide Lewis acidity. Hence, these strontium‐containing catalytic systems have demonstrated a bifunctionality that can perform esterification and transesterification reactions at the same time. In addition, the combination of these oxides decreases the leaching of the catalyst. Other materials such as metal–organic frameworks, zeolites, and La2O3 have been studied as SrO supports, showing that they can be used in oil transesterification reactions.

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Kinetics models of transesterification reaction for biodiesel production: A theoretical analysis

Cited by 26 publications

References 65 publications

Exploration of agricultural residue ash as a solid green heterogeneous base catalyst for biodiesel production

Exploration of agricultural residue ash as a solid green heterogeneous base catalyst for biodiesel production

Production and performance evaluation of biodiesel from Elaeis guineensis using natural snail shell-based heterogeneous catalyst: kinetics, modeling and optimisation by artificial neural network

A review of the use of SrO in catalysts for biodiesel production

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