As an example, soot - free buses can be powered by a wide range of fuels including fossil diesel or compressed natural gas (CNG), biogas, or
other liquid biofuels, and electric drive engines including hybrid drive, fuel cell, and battery electric drivetrains.
Once harvested, these crops would get ferried by truck or train to power plants and other industrial facilities where, along with waste from food crops and timber harvests, they would be burned for heat or electricity, or converted to ethanol and
other liquid biofuels.
Not exact matches
But the environmental price tag of
biofuels now joins the ranks of
other, cheaper domestic fuel sources — such as coal - to -
liquid fuel — as major sources of globe - warming pollution as well as unintended social consequences.
These findings have significance for human health but also for
biofuels production, since the same sugars can be fed to yeast to generate ethanol and
other liquid fuels.
[10][11] Among
other advantages, the micro turbines used in the C - X75 can be run on a range of fuels including diesel,
biofuels, compressed natural gas and
liquid petroleum gas.
Some experts believe that algae is set to eclipse all
other biofuel feedstocks as the cheapest, easiest, and most environmentally friendly way to produce
liquid fuel.
To satisfy the increase in world
liquids demand in the Reference case,
liquids production increases by 28.3 million barrels per day from 2010 to 2040, including the production of both petroleum (crude oil and lease condensate, natural gas plant [NGPL], bitumen, extra-heavy oil, and refinery gains), and
other liquid fuels (coal - to -
liquids [CTL], gas - to -
liquids [GTL],
biofuels, and kerogen).
4.3 The efficiency of
liquid biofuels in terms of greenhouse gas emissions compared to petroleum motor fuels varies from one type of
biofuel to the
other.
Other factors may reduce demand on forests for energy production, for example, technological problems with
liquid cellulosic
biofuel production and transportation - related constraints.
Sugar cane is the most economically attractive agricultural feedstock for
liquid biofuel, while maize and
other cereal and oilseed crops from the Northern Hemisphere are less competitive under market conditions (Figure 16).
Supply and demand of traditional biomass,
liquid cellulosic
biofuels, residues from the forest industry and
other forms of wood energy will be affected differently by different factors across developed and developing countries.