Microwave-assisted biodiesel production using -SO3H functionalized heterogeneous catalyst derived from a lignin-rich biomass

Article Energy & Fuels

Microwave-assisted sustainable synthesis of biodiesel on Oryza sativa catalyst derived from agricultural waste by esterification reaction

Gaurav Yadav et al.

Summary: The feasibility of using O. sativa husk as a raw material for high-performing carbon catalysts was confirmed in this study. A series of catalysts were fabricated through a simple carbonization and sulfonation process. These agricultural waste-derived catalysts were used in the esterification process to synthesize fatty acid methyl ester (FAME). The sulfuric acid concentration and carbon chain length were found to influence the FAME yield.

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION (2023)

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Review Green & Sustainable Science & Technology

A review on latest trends in cleaner biodiesel production: Role of feedstock, production methods, and catalysts

Pranjal Maheshwari et al.

Summary: The rising world population and its energy demands have put a significant burden on natural energy sources. The excessive use of fossil fuels threatens sustainable development and efforts to control global warming. Biodiesel has gained importance as an alternative fuel due to its environmental benefits. It can be produced from various feedstocks using different catalysts, offering flexibility, lower production costs, and a renewable nature compared to conventional diesel. The selection of the right feedstock and catalyst is crucial for economic biodiesel production. Deep Eutectic Solvents (DES) have emerged as green solvents that can address production issues and contribute to recyclability, recovery, and reusability. This review explores the trends and prospects in feedstock selection, synthesis routes, and catalysts for biodiesel production.

JOURNAL OF CLEANER PRODUCTION (2022)

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Article Multidisciplinary Sciences

Microwave-assisted synthesis of biodiesel by a green carbon-based heterogeneous catalyst derived from areca nut husk by one-pot hydrothermal carbonization

Gaurav Yadav et al.

Summary: In this study, a solid acid catalyst was synthesized using low temperature hydrothermal carbonization method. The catalyst exhibited enhanced sulfonic active sites and high acid density, making it effective for biodiesel synthesis at low temperatures. Various techniques were used to determine the chemical composition and morphology of the catalyst. The conversion of oleic acid to methyl oleate reached 96.4% under optimized conditions, with low activation energy. The presence of porous structure and sulfonic groups contributed to the high activity of the catalyst. The synthesis of biodiesel was confirmed using GC-MS and NMR. The catalyst showed good reusability, with a high transformation rate even after four consecutive cycles.

SCIENTIFIC REPORTS (2022)

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Article Chemistry, Physical

Kinetic Modelling of Esterification and Transesterification Processes for Biodiesel Production Utilising Waste-Based Resource

M. A. Hazrat et al.

Summary: Process optimisation and reaction kinetic model were developed for the two-stage esterification-transesterification reactions of waste cooking oil biodiesel. By considering the pseudo-homogeneous irreversible and pseudo-homogeneous first-order irreversible processes, the optimal process conditions and kinetic parameters were determined, leading to an increased overall process conversion efficiency.

CATALYSTS (2022)

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Article Chemistry, Multidisciplinary

Citrus limetta Peel-Derived Catalyst for Sustainable Production of Biodiesel

Gaurav Yadav et al.

Summary: This study examines the effectiveness of sweet lemon waste peels as an acidic catalyst in the esterification process for producing biodiesel from oleic acid. A biowaste-derived sulfonated carbon-based catalyst is fabricated without high temperatures and shows excellent conversion rates and recyclability.

ACS OMEGA (2022)

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Article Agricultural Engineering

Development of lignin based heterogeneous solid acid catalyst derived from sugarcane bagasse for microwave assisted-transesterification of waste cooking oil

Muhammad Hamza Nazir et al.

Summary: This study focuses on synthesizing a sulfonated catalyst using activated carbon produced from lignin extracted from sugarcane bagasse, optimizing the transesterification process of waste cooking oil with methanol using microwave heating, achieving high yield of biodiesel, and studying the reusability and stability of the catalyst in low-grade feedstocks.

BIOMASS & BIOENERGY (2021)

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Article Chemistry, Organic