Technical Challenges and Scientific Approach for a Sustainable Energy Efficient Future - Novel Combustion Concepts for Sustainable Energy Development - page 13

Fig. 5 Typical biofuel feedstocks and oil content

be acquired before making large investments, and the long-term availability of the
feedstock also should be determined. Rather than utilizing edible feedstock,
attention should be paid in using various types of algae, marine sources, cellulosic
and waste materials, and grass and weeds as feedstock options. Even with the same
type of feedstock (due to the nonhomogenity), the fuel characteristics can vary from
day to day and even from batch to batch. This requires not only the plant to be
fl flexible, but also the engine or energy conversion device that uses the fuel.

As the production rate increases due to increasing demand of the fuel, fuel stock
required should keep up the pace.

Irrespective of crop one acre of land, pond, or
bioreactor can annually yield about enough biomass to

“

field one motor vehicle

(Walker 2009 ). If Virgin Atlantic is to power its entire fl fleet, half of UK ' is arable

land will be required to get suf This limits the production capa-

bility of several nations with limited free land available for this extra production of
feedstock.
Oil content from plants and seeds could be season-dependent, which may require
extra expenditure in growing the feedstock. In India, though substantial investment
was made in growing Jatropha including the establishment of the Center for

cient feedstock. ”