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12 Liquid Biofuels: Biodiesel and Bioalcohols

Part 3. Gaseous and Liquid Fuels

  1. George Skevis

Published Online: 15 JUL 2010

DOI: 10.1002/9783527628148.hoc051

Handbook of Combustion

Handbook of Combustion

How to Cite

Skevis, G. 2010. Liquid Biofuels: Biodiesel and Bioalcohols. Handbook of Combustion. 3:12:359–388.

Author Information

  1. National Technical University of Athens, School of Mechanical Engineering, Athens, Greece

Publication History

  1. Published Online: 15 JUL 2010

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Abstract

The development of alternative, renewable fuels is of global importance due to concerns regarding global warming, environmental protection and diversity and security of energy supply. Liquid oxygenated biofuels in particular, such as biodiesel and bioethanol, provide the potential for superior engine performance coupled with reduced particulate emissions, and are increasingly gaining acceptance and market share in the energy and transportation sectors. This chapter provides a concise review of the current knowledge on biodiesel and bioalcohol combustion science and technology. An overview is given of biodiesel and bioalcohol production technologies. An outline of important physical and chemical properties of biofuels is presented and the dependence of biodiesel fuel properties on alkyl ester structure is discussed. Reliable performance and emissions predictions are very much dependent on the availability and performance of detailed chemical kinetic mechanisms. The combustion chemistry of ethanol is fairly well established and is reviewed in detail. Recent developments in the kinetic modeling of propanol and butanol isomers are also presented. The combustion chemistry of biodiesel surrogates is also reviewed. The effects of using neat or blended biofuels on internal combustion engine performance and exhaust emissions is thoroughly reviewed. The feasibility of biofuel use in aviation is also explored. The chapter finally briefly reviews life cycle analyses that assess the environmental performance of liquid biofuels as compared with conventional fuels.

Keywords:

  • liquid biofuels;
  • biodiesel;
  • bioalcohol;
  • combustion chemistry;
  • emissions;
  • internal combustion engine