Biodiesel production—current state of the art and challenges

  title={Biodiesel production—current state of the art and challenges},
  author={Palligarnai T. Vasudevan and Michael Briggs},
  journal={Journal of Industrial Microbiology \& Biotechnology},
Biodiesel is a clean-burning fuel produced from grease, vegetable oils, or animal fats. Biodiesel is produced by transesterification of oils with short-chain alcohols or by the esterification of fatty acids. The transesterification reaction consists of transforming triglycerides into fatty acid alkyl esters, in the presence of an alcohol, such as methanol or ethanol, and a catalyst, such as an alkali or acid, with glycerol as a byproduct. Because of diminishing petroleum reserves and the… 
An overview of transesterification methods for producing biodiesel from waste vegetable oils
ABSTRACT Compared to petroleum diesel, biodiesel is biodegradable and non-toxic. The use of edible vegetable oils for biodiesel production competes with the need for foodstuff. The continuously
Biodiesel production, properties, and feedstocks
  • B. Moser
  • Chemistry
    In Vitro Cellular & Developmental Biology - Plant
  • 2009
This review covers the process by which biodiesel is prepared, the types of catalysts that may be used for the production of biodiesel, the influence of free fatty acids on biodiesel production, the use of different monohydric alcohols in the preparation of biod diesel, the effects of blending biodiesel with other fuels on fuel properties, alternative uses for biod Diesel, and value-added uses of glycerol.
Biodiesel production from non food feedstocks using a bifunctional heterogeneous catalyst and glycerol byproduct utilization
Biodiesel is a fuel comprised of monoalkyl esters of long chain fatty acids derived from vegetable oils or animal fats. In the biodiesel industry, most biodiesel production is made from food sources,
Production of Biodiesel from Waste Cooking Oil: A Review
Biodiesel is a liquid transportation fuel that can be produced from renewable raw material such as waste cooking oil. The use of cooking oil as raw material for biodiesel production will enhance the
Production of biodiesel by enzymatic transesterification: review.
Problem Statement: The research on the production of biodiesel has increased significantly in recent years because of the need for an alternative fuel which endows with biodegradability, low toxicity
Environmentally Sustainable Biofuels: Advances in Biodiesel Research
Due to diminishing petroleum reserves and the deleterious environmental consequences of exhaust gases from fossil-based fuels, research on renewable and environmentally friendly fuels has received a
Utilization of Crude Glycerol from Biodiesel Industry for the Production of Value-Added Bioproducts
The rapid economic development and industrialization mainly depends on fossil fuels for their energy sources. Diminishing oil reserves, high cost and other environmental problems lead the researchers
Reduction Time Transesterification of Jatropha Oil with Alcohol into Biodiesel using Ultrasound-assisted
Using fossil fuel from natural resources will contribute to air pollution due to high amount of air pollutants emitted. Also the aggressive action to use sources like fossil fuel, coal and natural


Vegetable oils and animal fats can be transesterified to biodiesel for use as an alternative diesel fuel. Conversion of low cost feedstocks such as used frying oils is complicated if the oils
Oxidative stability of biodiesel from soybean oil fatty acid ethyl esters
It was observed that even though the neutralized, refined and waste frying soybean oils presented close comparable iodine values, biodiesel presented different oxidative stabilities, and the biodiesel from neutralized soybean oil presented greater stability, followed by the refined and the frying waste.
Biodiesel production using a membrane reactor.
Biodiesel Preparation by Lipase-Catalyzed Transesterification of Jatropha Oil
Immobilization of lipase (Chromobacterium viscosum) on Celite-545 enhanced the biodiesel yield to 71% from 62% yield obtained by using free tuned enzyme preparation with a process time of 8 h at 40 °C.
Enzymatic transesterification of olive oil and its precursors
The effect of different solvents and three different acyl acceptors on the transesterification of triolein (as a model compound) was investigated. The yield of biodiesel (methyl or ethyl ester) was
Variables affecting the yields of fatty esters from transesterified vegetable oils
Transesterification reaction variables that affect yield and purity of the product esters from cottonseed, peanut, soybean and sunflower oils include molar ratio of alcohol to vegetable oil, type of
Enzymatic conversion of waste edible oil to biodiesel fuel in a fixed-bed bioreactor
The conversion of waste edible oil to biodiesel fuel in a fixed-bed bioreactor was investigated. Three-step methanolysis of waste oil was conducted using three columns packed with 3 g of immobilized
Enzymatic production of alkyl esters through alcoholysis: A critical evaluation of lipases and alcohols
This paper focuses on a detailed evaluation of commercially available immobilized lipases and simple monohydric alcohols for the production of alkyl esters from sunflower oil by enzymatic alcoholysis, offering high reaction yields and a simple operation process.