Phosphomolybdic acid/graphene oxide as novel green catalyst using for biodiesel production from waste cooking oil via electrolysis method: Optimization using with response surface methodology (RSM)

Helmi, Maryam; Tahvildari, Kambiz; Hemmati, Alireza; Azar, Parviz Aberoomand; Safekordi, Ali Akbar

doi:10.1016/j.fuel.2020.119528

Cited by 90 publications

(31 citation statements)

References 71 publications

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“…The normal and studentized residual probability were analyzed for the FFA conversion are shown in supplementary data. It can be seen that all response values, random scatter plots, and observed variance were constant, and this indicated that there was no need to transform the response variable (Helmi et al, 2021). The calculated absolute error did not exceed 1.00% error, is in the…”

Section: Modelling Results and Anovamentioning

confidence: 86%

Esterification of Free Fatty Acid From Sludge Palm Oil Using Zeolitesulfonated Carbon From Sugar Cane Catalysts

2022

JOPR

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In this research, the zeolite-sulfonated carbon from sugar cane catalyst has been employed for the free fatty acid (FFA) esterification in sludge palm oil (SPO) optimised by response surface methodology and central composite design. The effect of the catalyst weight ratio of zeolite to sulfonated carbon was evaluated. The result showed that the catalyst with a weight ratio of zeolite to sulfonated carbon of 1:3 (% w/w) had the highest acidic value of 10.80 mmol g -1 and was used for further esterification optimisation. FTIR and EDX analysis affirmed the existence of a sulfonated group of the composite catalysts. The 13 C NMR analysis showed that the esterification successfully produced an ester compound. The optimum conditions for FFA conversion were acquired at a reaction temperature of 78.98°C, a reaction time of 119.97 min, a catalyst weight of 2.97 g, with 94.19% FFA conversion, and followed by a statistically significant model. The catalyst reusability study revealed that the catalyst had a slight decrease in catalyst performance and could generate up to 80.00% conversion after the fourth cycle. This study could bring forth early information about the potential of zeolite-sulfonated carbon from sugar cane catalyst for FFA conversion from SPO into high-value ester products.

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Section: Modelling Results and Anovamentioning

confidence: 86%

Esterification of Free Fatty Acid From Sludge Palm Oil Using Zeolitesulfonated Carbon From Sugar Cane Catalysts

2022

JOPR

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“…A further increase of the catalyst beyond 3 % results in a decrease in the methyl ester yield. This could be attributed to the fact that maximum increase of the catalyst beyond the optimum amount results in an increase of the catalysts mass transfer resistance, which consequently causes increased mixing difficulty of the reactants [29]. Another possible explanation is that excess catalyst results in an increase in glycerine viscosity, which lowers the ester yield in the long run [30].…”

Section: Effect Of Methanol To Oil Molar Ratio and The Catalyst To Oi...mentioning

confidence: 99%

Production of Biodiesel Using Phosphate Rock as a Heterogeneous Catalyst. An Optimized Process Using Surface Response Methodology

Kiprono

Rutto

Seodigeng

2022

Environmental and Climate Technologies

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In the present study, calcined phosphate rock was used as a heterogeneous catalyst for biodiesel production from waste cooking oil (WCO). Response surface methodology was used to optimize and determine the significant process variables that affected the experiment. A 5-level-4 factor Central composite design consisting of 30 experiments was used to develop a quadratic polynomial model. The following parameters were optimized, namely, reaction temperature (40–90 °C), catalyst to oil weight ratio (1–5 %), reaction time (40–120 min), and methanol to oil ratio (10:1–18:1). Maximum biodiesel yield of 96.07 % was obtained through numerical optimization at reaction temperature 62.63 °C, catalyst to oil weight ratio of 3.32 %, reaction time 79.07 min, and alcohol to oil ratio 14.79:1. Fourier transform Infrared Spectra (FTIR) analysis was used to characterize the phosphate rock in its raw form, after calcination at 1000 °C and after the first and the fourth reuse cycle. According to the American society for testing and material (ASTM D6751), the fuel properties such as kinematic viscosity, pour point, cloud point, and density were measured and were found to be within the stipulated range.

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“…At 50 • C, NBC3 retained 76% of its maximal activity. Immobilized enzymes are known to withstand harsh environmental conditions which proves beneficial in applications such as biodiesel production where low reaction temperatures can increase feedstock's viscosity thereby resulting in decreased reaction rates [18]. Hence, the use of immobilized lipase with improved temperature stability would maintain a higher biodiesel production rate.…”

Section: Effect Of Ph and Temperature On Lipase Activitymentioning

confidence: 99%

Evaluation of a New Cerium Oxide-Bismuth Oxide-Based Nanobiocomposite as a Biocatalyst for Biodiesel Production

et al. 2021

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Biodiesel is a promising renewable energy source that can be used together with other biofuels to help meet the growing energy needs of the rapidly increasing global population in an environmentally friendly way. In search for new and more efficient biodiesel production methods, this work reports on the synthesis and use of a novel biocatalyst that can function in a broader range of pH and temperature conditions, while producing high biodiesel yields from vegetable oils. Biodiesel was synthesized by transesterification of non-edible Eruca sativa oil using a lipase from Aspergillus niger that was immobilized on cerium oxide bismuth oxide nanoparticles. The synthesized nanoparticles were first grafted with polydopamine which facilitated the subsequent anchoring of the enzyme on the nanoparticle support. The enzyme activity, pH and temperature stability, and reusability of the immobilized lipase were superior to those of the free enzyme. Following response surface methodology optimization, the highest biodiesel yield of 90.6% was attained using 5 wt% biocatalyst, methanol to oil ratio of 6:1, reaction temperature of 40 °C, pH of 7, and reaction time of 60 h. The produced biodiesel was characterized by Fourier transform infrared spectroscopy and its fatty acid methyl ester composition was determined by gas chromatography-mass spectrometry. Erucic acid methyl ester was identified as the major component in biodiesel, with 47.7 wt% of the total fatty acid methyl esters content. The novel nanobiocatalyst (Bi2O3·CeO2@PDA@A.niger.Lipase) has the potential to produce high biodiesel yields from a variety of vegetable oils.

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Phosphomolybdic acid/graphene oxide as novel green catalyst using for biodiesel production from waste cooking oil via electrolysis method: Optimization using with response surface methodology (RSM)

Cited by 90 publications

References 71 publications

Esterification of Free Fatty Acid From Sludge Palm Oil Using Zeolitesulfonated Carbon From Sugar Cane Catalysts

Esterification of Free Fatty Acid From Sludge Palm Oil Using Zeolitesulfonated Carbon From Sugar Cane Catalysts

Production of Biodiesel Using Phosphate Rock as a Heterogeneous Catalyst. An Optimized Process Using Surface Response Methodology

Evaluation of a New Cerium Oxide-Bismuth Oxide-Based Nanobiocomposite as a Biocatalyst for Biodiesel Production

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