J. Life Sci. Biomed. 6(3): 71-75, May 30, 2016
Life Science and Biomedicine
Evaluation Energy Efficiency in Biodiesel Production from Canola; A
Reza Abshar1 and Móslem Sami2
1Independent researcher, Gotvand, Khuzestan, Iran.
2Department of Biosystem Engineering, Faculty of Agricultural Engineering and Technology, University of Tehran, P.O. Box 4111, Karaj
Corresponding author's email: email@example.com; firstname.lastname@example.org
ABSTRACT: Today fossil fuels are the main source of energy; however, it is becoming increasingly unlikely
that fossil fuel supply will be able to meet growth in demand of energy in nearly future. The production of
biofuel from farms products has been promoted as a replacement for fossil fuels. Nevertheless the debate over
the energy balance of biodiesel is ongoing. In this paper, we focus on analyses of energy efficiency of rapeseed
biofuel production in a case study in Khuzestan province of Iran. Our results showed that, in term of energy,
canola is a reliable source of energy as biodiesel. The energy ratio in this process was rather higher than one
(1.08) and net energy was obtained as 2582.37 Mj per hectare of canola farming. However this value in not
high, by considering byproducts of canola farming it can be suggested as a sources of future energy.
Key words: Biodiesel, Canola, Energy analysis
Fossil fuels are the main energy source that drives the world economy. However, for a number of reasons it is
becoming increasingly unlikely that fossil fuel supply will be able to meet this growth in demand. Bioenergy is an
important alternative source of energy. Energy is derived from plants and biomass can be converted into liquid
fuel  and directly used in the existing transportation infrastructure, which is almost entirely run on fossil fuels
(cars, buses, airplanes).
It is claimed that Bioenergy produced from cultivation of plants could potentially provide a sustainable
alternative to fossil fuels for transport. Recent policy-driven interests in renewable energy and carbon mitigation
have contributed new resources and enthusiasm for production of bioenergy, in particular the strategy of
regionally produced biofuels that can help meet a low carbon fuel standard.
However, recent studies suggest that some combinations of cultivation processes and conversion
technologies for bio- energy consume more energy than is produced. The production of bioenergy will have
environmental impacts, including those associated with cultivation and the technologies used to process the crops
into biofuel. The net benefits of biofuel production from energy, environmental, GHG, and economic perspectives
is still debated. Some analyses report a negative energy balance in bioenergy production [e.g., 2]; others have
reported net positive energy balances [3, 4, 5]. Most studies acknowledged that biodiesel energy balance for first-
time vegetable oils depends mainly on the crop production system [6, 7].
This study evaluated energy balance of bio-fuel production to estimate the sustainability of a number of
combinations of production methods and conversion technologies for producing transport energy from canola.
Energy efficiency is one of the most important elements of sustainability analysis . Canola refers to a cultivar of
either Rapeseed (Brassica napus L.) or Field Mustard (Brassica campestris L. or Brassica Rapa var.). Its seeds are
used to produce edible oil suitable for consumption by humans and livestock. The oil is also suitable for use as
biodiesel. Canola production in Iran is 164000 tons in 2009 that 64.90% of irrigated farming and 35.10% of dry
farming have been obtained.Also in this year, canola cultivation was about 86000 ha that 59.56% is irrigated
farming and the rest of that was dry farming .
MATERIALS AND METHODS
Data used in this study were obtained from 10 large mechanized canola farms by using a face to- face
questionnaire method in Gotvand County during production period of 2015-2016. The farms produce
To cite this paper: Abshar R, and Sami M. 2016. Evaluation Energy Efficiency in Biodiesel Production from Canola; A Case Study. J. Life Sci. Biomed., 6 (3): 71-75.