Energy estimations for life-cycle analysis of jatropha,neem,and karanja biodiesels

Abstract

The present article deals with the study of environmental impacts of using biodiesels derived from jatropha, karanja, and neem tree using an energy life-cycle analysis approach. To evaluate the energy consumption during the life cycle of jatropha, karanja, and neem biodiesel as fuel for compression ignition (CI) engine, a cradle-to-grave analysis is carried out. Net energy ratio is calculated for each biodiesel by the ratio of the energy output of the system in the form of fuel energy delivered to the compression ignition engine and the cumulative energy demand of the system. Net energy ratios for jatropha, karanja, and neem biodiesel life cycles are R ₁ = 1.2325, R ₂ = 1.6425, and R ₃ = 1.6479, respectively. Life-cycle energy ratio of biodiesels shows that all the three fuels are renewable. It is concluded from the study that all biodiesels have higher output than inputs in terms of energy.

Keywords

net energy ratio biodiesel life-cycle analysis jatropha neem karanja

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References

ISO 14040 1997 Environmental management life cycle assessment principles and framework

ISO 14041 1998 Environmental management life cycle assessment goal and scope definition and inventory analysis

ISO 14042 2000 Environmental management life cycle assessment life cycle impact assessment

ISO 14043 2000 Environmental management life cycle assessment life cycle interpretation

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Available from http://www.svlele.com/neem.htm (access date 3 December 2009)

Energy estimations for life-cycle analysis of jatropha,neem,and karanja biodiesels – a parametric study

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