Study on Biodiesel Production: Feedstock Evolution, Catalyst Selection, and Influencing Factors Analysis

As fossil fuel depletion and environmental pollution become increasingly severe, biodiesel has emerged as a promising renewable alternative to conventional diesel due to its biodegradability, low sulfur emissions, and high combustion efficiency. This paper provides a comprehensive review of the evol...

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Main Authors: Fangyuan Zheng, Haeng Muk Cho
Format: Article
Language:English
Published: MDPI AG 2025-05-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/18/10/2533
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author Fangyuan Zheng
Haeng Muk Cho
author_facet Fangyuan Zheng
Haeng Muk Cho
author_sort Fangyuan Zheng
collection DOAJ
description As fossil fuel depletion and environmental pollution become increasingly severe, biodiesel has emerged as a promising renewable alternative to conventional diesel due to its biodegradability, low sulfur emissions, and high combustion efficiency. This paper provides a comprehensive review of the evolution of biodiesel feedstocks, major production technologies, and key factors influencing production efficiency and fuel quality. It traces the development of feedstocks from first-generation edible oils, second-generation non-edible oils and waste fats, to third-generation microalgal oils and fourth-generation biofuels based on synthetic biology, with a comparative analysis of their respective advantages and limitations. Various production technologies such as transesterification, direct esterification, supercritical alcohol methods, and enzyme-catalyzed transesterification are examined in terms of reaction mechanisms, process conditions, and applicability. The effects of critical process parameters including the alcohol-to-oil molar ratio, reaction time, and temperature on biodiesel yield and quality are discussed in detail. Particular attention is given to the role of catalysts, including both homogeneous and heterogeneous types, in enhancing conversion efficiency. In addition, life cycle assessment (LCA) is briefly considered to evaluate the environmental impact and sustainability of biodiesel production. This review serves as a valuable reference for improving biodiesel production technologies, advancing sustainable feedstock development, and promoting the commercial application of biodiesel.
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spelling doaj-art-4083e02b641d45cb807e2f74f5dc681d2025-08-20T01:56:19ZengMDPI AGEnergies1996-10732025-05-011810253310.3390/en18102533Study on Biodiesel Production: Feedstock Evolution, Catalyst Selection, and Influencing Factors AnalysisFangyuan Zheng0Haeng Muk Cho1Department of Mechanical Engineering, Kongju National University, Cheonan 31080, Republic of KoreaDepartment of Mechanical Engineering, Kongju National University, Cheonan 31080, Republic of KoreaAs fossil fuel depletion and environmental pollution become increasingly severe, biodiesel has emerged as a promising renewable alternative to conventional diesel due to its biodegradability, low sulfur emissions, and high combustion efficiency. This paper provides a comprehensive review of the evolution of biodiesel feedstocks, major production technologies, and key factors influencing production efficiency and fuel quality. It traces the development of feedstocks from first-generation edible oils, second-generation non-edible oils and waste fats, to third-generation microalgal oils and fourth-generation biofuels based on synthetic biology, with a comparative analysis of their respective advantages and limitations. Various production technologies such as transesterification, direct esterification, supercritical alcohol methods, and enzyme-catalyzed transesterification are examined in terms of reaction mechanisms, process conditions, and applicability. The effects of critical process parameters including the alcohol-to-oil molar ratio, reaction time, and temperature on biodiesel yield and quality are discussed in detail. Particular attention is given to the role of catalysts, including both homogeneous and heterogeneous types, in enhancing conversion efficiency. In addition, life cycle assessment (LCA) is briefly considered to evaluate the environmental impact and sustainability of biodiesel production. This review serves as a valuable reference for improving biodiesel production technologies, advancing sustainable feedstock development, and promoting the commercial application of biodiesel.https://www.mdpi.com/1996-1073/18/10/2533biodieselproduction of biodieselbiodiesel raw materialstransesterificationcatalyst
spellingShingle Fangyuan Zheng
Haeng Muk Cho
Study on Biodiesel Production: Feedstock Evolution, Catalyst Selection, and Influencing Factors Analysis
Energies
biodiesel
production of biodiesel
biodiesel raw materials
transesterification
catalyst
title Study on Biodiesel Production: Feedstock Evolution, Catalyst Selection, and Influencing Factors Analysis
title_full Study on Biodiesel Production: Feedstock Evolution, Catalyst Selection, and Influencing Factors Analysis
title_fullStr Study on Biodiesel Production: Feedstock Evolution, Catalyst Selection, and Influencing Factors Analysis
title_full_unstemmed Study on Biodiesel Production: Feedstock Evolution, Catalyst Selection, and Influencing Factors Analysis
title_short Study on Biodiesel Production: Feedstock Evolution, Catalyst Selection, and Influencing Factors Analysis
title_sort study on biodiesel production feedstock evolution catalyst selection and influencing factors analysis
topic biodiesel
production of biodiesel
biodiesel raw materials
transesterification
catalyst
url https://www.mdpi.com/1996-1073/18/10/2533
work_keys_str_mv AT fangyuanzheng studyonbiodieselproductionfeedstockevolutioncatalystselectionandinfluencingfactorsanalysis
AT haengmukcho studyonbiodieselproductionfeedstockevolutioncatalystselectionandinfluencingfactorsanalysis