Performance of CaO from different sources as a catalyst precursor in soybean oil transesterification: Kinetics and leaching evaluation

Sousa, Fabiana P. de; Reis, Gustavo P. dos; Cardoso, Claudia Cristina; Mussel, Wagner da Nova; Pasa, Vânya Márcia Duarte

doi:10.1016/j.jece.2016.03.009

Cited by 34 publications

(20 citation statements)

References 16 publications

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“…Table S2 in the Supporting Information ). De Sousa et al 62 and Kouzu et al 65 investigated the transesterification of soybean oil and waste cooking oil, respectively, over CaO catalysts obtained from different sources. The calcium content of the prepared biodiesel in their work was reported mostly around 200 ppm, which was considered mainly due to the leaching of calcium diglyceroxide into biodiesel.…”

Section: Results and Discussionmentioning

confidence: 99%

Optimization of Biodiesel Production over Chicken Eggshell-Derived CaO Catalyst in a Continuous Centrifugal Contactor Separator

Fayyazi

Ghobadian

Bovenkamp

et al. 2018

Ind. Eng. Chem. Res.

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Solid calcium oxide (CaO) catalyst was prepared via the calcination of chicken eggshells as an environmentally friendly waste resource and incorporated in a continuous centrifugal contactor separator (CCCS) for intensified biodiesel synthesis. Biodiesel or fatty acid methyl esters (FAME) were produced via the transesterification of sunflower oil (containing 5 wt % tetrahydrofuran as a cosolvent) with methanol under 60 °C and separated from the glycerol and catalyst phases continuously in the CCCS. The influence of reaction parameters on biodiesel production was well modeled by response surface methodology. At an oil flow rate of 9 mL/min, an alcohol to oil molar ratio of 11:1, and a weight hourly space time (defined as the catalyst weight over the oil mass flow rate) of 0.050 h, an optimized FAME yield of 83.2% with a productivity of 638 kgFAME/(m3reactor·h) was achieved. CaO catalyst was reused without significant activity loss for at least four cycles.

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Section: Results and Discussionmentioning

confidence: 99%

Optimization of Biodiesel Production over Chicken Eggshell-Derived CaO Catalyst in a Continuous Centrifugal Contactor Separator

Fayyazi

Ghobadian

Bovenkamp

et al. 2018

Ind. Eng. Chem. Res.

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“…Further, weak absorption wavelengths > 3700 cm −1 specifically 3722 cm −1 and 3807 cm −1 were present due to carbonyl "C=O" and hydroxyl "O-H" groups asymmetric bending. As reported by De Sousa et al [21], Tan et al [14], and Margaretha et al [19], the hygroscopic nature of catalyst is highly prone to absorb carbon dioxide and moisture from the atmosphere and subsequently forms CaCO 3 and Ca(OH) 2 .…”

Section: Resultsmentioning

confidence: 83%

“…Islam et al [20] synthesized nano-CaCO 3 with particle of 20 ± 5 nm diameter from cockle shells by grinding mechanically in the presence of dodecyl dimethyl betaine. De Sousa et al [21] investigated transesterification kinetics of soybean oil using commercial CaO, egg shell CaO, carb shell CaO BE of 0.9 m 2 /g, 4.3 m 2 /g, and 4.0 m 2 /g, and particle size of 56 nm, 184 nm, and 74 nm, respectively. The significant transesterification reaction parameters that influence JME yield include catalyst loading, methanol to oil ratio, reaction time, heating temperature, and the stirring rpm [22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…The study reports of Kanakaraju et al [31], Akmar and Rahim [32], and Hossen et al [33] demonstrate potential of Razor clams marine life and abundance in the state of Sarawak as well as in the west Malaysian provinces. The previous works on synthesis of calcium catalysts are very limited and have been focused on increasing catalyst surface area and lowering the particle size from naturally available renewable wastes such as aquatic seashells [18,20,21,[34][35][36][37][38]. However, according to the best of our broad literature survey, no work has reported on activated CaO nanocatalyst synthesis using Razor shells.…”

Section: Introductionmentioning

confidence: 99%

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Active Razor Shell CaO Catalyst Synthesis for Jatropha Methyl Ester Production via Optimized Two-Step Transesterification

Reddy

Saleh

Islam

et al. 2017

Journal of Chemistry

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Calcium based catalysts have been studied as promising heterogeneous catalysts for production of methyl esters via transesterification; however a few were explored on catalyst synthesis with high surface area, less particle size, and Ca leaching analysis. In this work, an active Razor shell CaO with crystalline size of 87.2 nm, BET of 92.63 m 2 /g, pore diameters of 37.311 nm, and pore volume of 0.613 cc/g was synthesized by a green technique "calcination-hydro aeration-dehydration." Spectrographic techniques TGA/DTA, FTIR, SEM, XRD, BET&BJH, and PSA were employed for characterization and surface morphology of CaO. Two-step transesterification of Jatropha curcas oil was performed to evaluate CaO catalytic activity. A five-factor-five-level, two-block, half factorial, central composite design based response surface method was employed for experimental analysis and optimization of Jatropha methyl ester (JME) yield. The regression model adequacy ascertained thru coefficient of determination ( 2 : 95.81%). A JME yield of 98.80% was noted at (3.10 wt.%), (54.24 mol./mol.%), (127.87 min), (51.31 ∘ C), and (612 rpm). The amount of Ca leached to JME during 1st and 4th reuse cycles was 1.43 ppm ± 0.11 and 4.25 ppm ± 0.21, respectively. Higher leaching of Ca, 6.67 ppm ± 1.09, was found from the 5th reuse cycle due to higher dispersion of Ca 2+ ; consequently JME yield reduces to 76.40%. The JME fuel properties were studied according to biodiesel standards EN 14214 and comply to use as green biodiesel.

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“…CaO is an alkaline earth metal oxide. CaO occurs through thermal decomposition of minerals such as limestone and calcite or from natural resources such as sea-and eggshells that contain calcium carbonate (CaCO3) (de Sousa et al, 2016). The general physical and chemical properties of CaO are listed in Table 8.…”

Section: Properties Of Calcium Oxidementioning

confidence: 99%

Synthesis of mesoporous calcium titanate catalyst for transesterification of used cooking oil: A review of the synthesized potential

Yahya¹,

Ngadi²

2020

Int. j. adv. appl. sci.

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Biodiesel is a promising alternative for conventional diesel fuel due to the unsustainable feature of the resources and unstable price of the fuels. However, the production cost is higher compared to the conventional ones and is significantly contributed from the feedstock. Realizing that a large portion of used cooking oil (UCO) is generated daily, this review aims to investigate and explore the production of biodiesel from UCO. In the production reaction process, undoubtedly, the catalyst plays an important role. It has been shown that calcium oxide (CaO) is one of the best heterogeneous basic catalysts in the transesterification reaction for biodiesel production. However, the catalyst has a low surface area which restricts the active basic sites to disperse on the catalyst surface. Moreover, CaO catalyst faces leaching problem, poor stability, and porosity which hinder its catalytic activity and reusability. Therefore, in this study, it is aimed to review the potential of titanium as a support catalyst to modify CaO supported titanium with a mesoporous structure (mesoporous calcium titanate) by a sol-gelhydrothermal method to overcome the limitations of CaO catalyst.

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Performance of CaO from different sources as a catalyst precursor in soybean oil transesterification: Kinetics and leaching evaluation

Cited by 34 publications

References 16 publications

Optimization of Biodiesel Production over Chicken Eggshell-Derived CaO Catalyst in a Continuous Centrifugal Contactor Separator

Optimization of Biodiesel Production over Chicken Eggshell-Derived CaO Catalyst in a Continuous Centrifugal Contactor Separator

Active Razor Shell CaO Catalyst Synthesis for Jatropha Methyl Ester Production via Optimized Two-Step Transesterification

Synthesis of mesoporous calcium titanate catalyst for transesterification of used cooking oil: A review of the synthesized potential

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