Transesterification of commercial waste cooking oil into biodiesel over innovative alkali trapped zeolite nanocomposite as green and environmental catalysts

Abukhadra, Mostafa R.; Basyouny, Mohamed Gameel; El-Sherbeeny, Ahmed M.; El-Meligy, Mohammed A.; Elgawad, Abd Elatty E. Abd

doi:10.1016/j.scp.2020.100289

Cited by 25 publications

(14 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reduction in the yield of biodiesel at higher temperature is due to the increased miscibility between the product and glycerine which decreases the phase separation and hence yield. Moreover, at higher temperatures, vaporization of methanol is high, since boiling point of methanol is 65 °C, and hence, it is present in vapor phase, and polarity of methanol reduces which further reduces the amount of methoxide species in the transesterification reaction [50]. While at the reaction temperature lower than 40 °C, the activation energy is not sufficient to encourage collisions between the reactant molecules, whereas at higher temperature (> 65 °C), there is an increase in the particle kinetic energy due to the absorption of heat, and many of the reactant molecules possess the minimum energy to collide and react; hence, the activation energy is attained easily.…”

Section: Effect Of Methanol To Oil Ratio On Biodiesel Yield Using Mgo...mentioning

confidence: 99%

Production of biodiesel from waste cooking oil using mesoporous MgO-SnO2 nanocomposite

Velmurugan

Warrier

2022

J. Eng. Appl. Sci.

View full text Add to dashboard Cite

Mesoporous, bifunctional MgO-SnO2 nanocatalysts with enhanced surface area are used for producing biodiesel from waste cooking oil. Biodiesel with yield of 80% is achieved within the first 20 min when transesterification is carried out at an optimum condition of 18:1 methanol to oil ratio, 2 wt% of nanocatalyst, and at a reaction temperature of 60 °C. The conversion gives a maximum yield of 88% when transesterification is allowed to continue for 120 min. The waste cooking oil used in this work is dominated with linoleic acid and oleic acid, which during transesterification gets converted into methyl linoleate and 9-octadecenoic acid methyl ester. These nanocatalysts are fabricated using a composite of rutile (tetragonal) phase SnO2 and cubic phase MgO nanostructures with prominent crystal orientation along [211] and [200] plane respectively. The MgO-SnO2 nanocomposites with an enhanced surface area of 31 m2/g, basic sites of 2 mmol/g, and particle size of ~15 nm are synthesized by novel sequential thermal decomposition and sol-gel technique. The synthesized wide band gap nanocomposites have Mg and Sn in the ratio of 15:1 and do not have any impurity phases as observed in the X-ray diffraction pattern and EDS spectrum. The presence of surface oxygen states and Mg2+ and Sn4+ oxidative states is responsible for the catalytic activity and recyclability displayed by the composites. This work signifies the role of nanocomposites and their synthesis conditions in improving the rate of transesterification. These metal oxide nanocomposites which are nontoxic, stable, cost effective, and easier to synthesis are promising catalysts for large-scale transesterification of waste cooking oil to biodiesel.

show abstract

Section: Effect Of Methanol To Oil Ratio On Biodiesel Yield Using Mgo...mentioning

confidence: 99%

Production of biodiesel from waste cooking oil using mesoporous MgO-SnO2 nanocomposite

Velmurugan

Warrier

2022

J. Eng. Appl. Sci.

View full text Add to dashboard Cite

show abstract

“…The significant differences in the ester yield (UCO with methanol was used) for different metals were not observed. The reusability was tested for Mg/clinoptilolite for five cycles: the ester yield only insignificantly decreased from 98.4 to 94.5% [110]. The potassium impregnated on kaolinite was studied: the presence of potassium positively affected the yield of the ester until 30 wt% (potassium in kaolinite), where 94.8% of the ester yield after 3 h was achieved.…”

Section: Heterogeneous Catalysismentioning

confidence: 99%

The Catalysed Transformation of Vegetable Oils or Animal Fats to Biofuels and Bio-Lubricants: A Review

et al. 2021

View full text Add to dashboard Cite

This review paper summarizes the current state-of-the-art of the chemical transformation of oils/fats (i.e., triacylglycerols) to the use of biofuels or bio-lubricants in the means of transport, which is a novelty. The chemical transformation is necessary to obtain products that are more usable with properties corresponding to fuels synthesized from crude oil. Two types of fuels are described—biodiesel (the mixture of methyl esters produced by transesterification) and green diesel (paraffins produced by hydrogenation of oils). Moreover, three bio-lubricant synthesis methods are described. The transformation, which is usually catalysed, depends on: (i) the type and composition of the raw material, including alcohols for biodiesel production and hydrogen for green diesel; (ii) the type of the catalyst in the case of catalysed reactions; (iii) the reaction conditions; and (iv) types of final products. The most important catalysts, especially heterogeneous and including reaction conditions, for each product are described. The properties of biodiesel and green diesel and a comparison with diesel from crude oil are also discussed.

show abstract

“…1 Esters are one of the examples of alternative energy sources that are sustainable, renewable, and nontoxic due to fact that they can be synthesized with edible or inedible oils. 2 In addition, esters possess a high cetane value, flash point, and similar lubricity to conventional diesel wherein it can perform in the diesel engine without a need for modification. 3 Esters can be produced though catalytic esterification of fatty acids and alcohols in the presence of acidic catalysts.…”

Section: Introductionmentioning

confidence: 99%

“…Energy sustainability will be one of the challenges for the next 40 years due to the rapid exhaustion of fossil fuel reserves for continuous energy generation demands . Esters are one of the examples of alternative energy sources that are sustainable, renewable, and nontoxic due to fact that they can be synthesized with edible or inedible oils . In addition, esters possess a high cetane value, flash point, and similar lubricity to conventional diesel wherein it can perform in the diesel engine without a need for modification …”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of rGO@ZnO Nanocomposites for Esterification of Acetic Acid

et al. 2022

View full text Add to dashboard Cite

In the present work, the aim is to synthesize reduced graphene oxide (rGO) and zinc:reduced graphene oxide composite catalysts (ZnO:rGO) for esterification of acetic acid with n-heptanol. The physical and chemical characteristics of the rGO and rGO-metal oxide composite catalysts such as textural surface characteristics, surface morphology, thermal stability, functional groups, and elemental analysis were studied. The surface areas of rGO, ZnO(0.5 M), and ZnO(1 M) were recorded, respectively, at 31.72, 27.65, and 36.19 m2 g–1. Furthermore, esterification reaction parameters such as the reaction time, catalyst dosage, and reaction temperature for acetic acid were optimized to check the feasibility of rGO-metal oxide composites for a better conversion percentage of acetic acid. The optimized catalyst was selected for further optimization, and the optimum reaction parameters found were 0.1 wt % of catalyst, 160 min reaction duration, and 100 °C reaction temperature with a maximal yield of 100%. At 110 °C, the reaction conducted in the presence of 0.1 g of catalyst displayed more yield than the uncatalyzed reaction.

show abstract

Transesterification of commercial waste cooking oil into biodiesel over innovative alkali trapped zeolite nanocomposite as green and environmental catalysts

Cited by 25 publications

References 49 publications

Production of biodiesel from waste cooking oil using mesoporous MgO-SnO2 nanocomposite

Production of biodiesel from waste cooking oil using mesoporous MgO-SnO2 nanocomposite

The Catalysed Transformation of Vegetable Oils or Animal Fats to Biofuels and Bio-Lubricants: A Review

Synthesis and Characterization of rGO@ZnO Nanocomposites for Esterification of Acetic Acid

Contact Info

Product

Resources

About