Optimization and modeling of biodiesel production using fluorite as a heterogeneous catalyst

The utilization of waste cooking oil (WCO) and bleached palm oil (BPO) for the production of biodiesel in the presence of hydrothermally treated calcium oxide (CaO) derived from waste chicken eggshells was investigated. Waste chicken eggshells were calcined at 850 °C and then hydrothermally treated at 120 and 140 °C to produce two sets of CaO catalysts. Hydrothermal treatment of the catalysts resulted in a decrease of the crystallite size from 47 to 30 and 28 nm at temperatures of 120 and 140 °C. The catalytic performance of the CaO catalysts was evaluated with WCO and BPO, respectively. WCO gave biodiesel yields of 82.7 and 83.1 % for CaO catalysts aged at 120 and 140 °C respectively. BPO gave 79.4 and 79.6 % yields, respectively, for the same set of catalysts.

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Effect of Hydrothermal Treatment on the Properties of Calcium Oxide from Eggshells Used as a Biodiesel Catalyst

Fasanya

Gbadamasi

Osigbesan

et al. 2021

Chem Eng & Technol

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Identification of sensitive process parameter of rubber seed oil conversion to biodiesel using fluorite and calcined limestone as catalysts—Uncertainty error analysis

Lakshmi

Niju

Begum

et al. 2020

Env Prog and Sustain Energy

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Reliability on the observed results of biodiesel prepared from high viscous rubber seed oil (RSO) using fluorite and calcined limestone as catalysts has been studied using uncertainty error analysis. In this study, the error analysis was performed for three different deviations 5, 10, and 15% of optimum process parameter conditions of 12:1 methanol: oil molar ratio (mol/mol), 4 (wt %) of catalyst concentration, and 5(h) of reaction time, respectively. All the uncertainty experiments were performed for upper level and lower level of every deviation mentioned with. From these experiments, it was observed that methanol: oil molar ratio (mol/mol) shows more error on a small deviation of optimum conditions when compared with catalyst concentration and reaction time, respectively. It is also observed that molar ratio is the most sensitive process parameter in biodiesel preparation from RSO using fluorite and calcined limestone as heterogeneous base catalysts when compared to catalyst concentration and reaction time, respectively.

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Conversion of Karanja oil to biodiesel using modified heterogeneous base catalyst

Bojaraj

Bharadwaj

Mohamed

et al. 2021

Env Prog and Sustain Energy

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In the recent times, biodiesel production from various non-edible oil sources has received a lot of attention. Karanja oil is chosen mainly due to its availability and low cost. It is a nitrogen fixing tree cultivated to enhance soil quality. Transesterification of Karanja oil to biodiesel using a basic solid modified heterogeneous catalyst has been discussed in the present study. Aluminum nitrate Al(NO 3 ) 3 impregnated on calcined marble (Al(NO 3 ) 3 /calcined marble), prepared by wet impregnation method (25%), is used as a modified heterogeneous base catalyst. Surface morphology of the synthesized catalyst is determined using a scanning electron microscope (SEM) analyzer and the composition of various elements present in the prepared catalyst is analyzed using energy dispersive spectrometer (EDS analyzer). 67.56 (wt/wt) of calcium oxide (CaO) is observed for calcined marble and 78.19 (wt/wt %) of CaO has been noticed for impregnated catalyst (Al(NO 3 ) 3 /calcined marble). A maximum biodiesel yield of 96.5% and a conversion of 97.43% was obtained at an optimum methanol:oil molar ratio of 9:1 (mol/mol), 4 (wt %) of catalyst concentration and 1.5 (h) reaction time respectively. The entire composition of formed biodiesel is determined using gas chromatography-mass spectrometry (GC-MS) analyzer and conversion of Karanja oil to biodiesel is measured using 1 H-nuclear magnetic resonance (NMR) analyzer.

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Optimization and modeling of biodiesel production using fluorite as a heterogeneous catalyst

Cited by 27 publications

References 38 publications

Effect of Hydrothermal Treatment on the Properties of Calcium Oxide from Eggshells Used as a Biodiesel Catalyst

Effect of Hydrothermal Treatment on the Properties of Calcium Oxide from Eggshells Used as a Biodiesel Catalyst

Identification of sensitive process parameter of rubber seed oil conversion to biodiesel using fluorite and calcined limestone as catalysts—Uncertainty error analysis

Conversion of Karanja oil to biodiesel using modified heterogeneous base catalyst

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