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Key factors of the Brazilian biofuel sector
Brazil has gradually developed and established an ethanol industry and growing biodiesel sector, offering an example of how countries can develop ‘home-grown’ renewable energy sectors. This development has been facili...
01 Mar 2012 - by Nieves Lopez Izquierdo
Brazilian biofuels: infrastructure and crops
Brazil has gradually developed and established an ethanol industry and growing biodiesel sector, offering an example of how countries can develop ‘home-grown’ renewable energy sectors. This development has been facili...
01 Mar 2012 - by Nieves Lopez Izquierdo
From seed and soil to end use
As with every other energy source, biofuels entail some risks and should be assessed over their entire lifecycle. This graphic, From seed and soil to end use, tracks the lifecycle of liquid biofuels for use in the transp...
29 Feb 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Differentiation between crops, land-use and end-use efficiency
The energy gain from biofuels is often expressed as a ratio of biofuel energy output to fossil energy input. However, when considering which biofuels are the most efficient using this metric, allowance must also be m...
01 Mar 2012 - by Nieves Lopez Izquierdo
World biofuels production trends
Production trends indicate that the supply of both ethanol and biodiesel is steadily increasing, although the global ethanol market is more than four times larger than the global biodiesel market. Markets for both ar...
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Energy potential from one tonne input: organic matter and landfill material
Dierent biofuels pathways have dierent eciencies in the growth of feedstocks, conversion processes and end-uses. This chain of eciency pertaining to input and output needs to be considered in national planning pr...
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Global production of biofuels
Global production of biofuels. In 2009, liquid biofuels provided 2.7 percent of all global road transport fuels.
01 Mar 2012 - by Nieves Lopez Izquierdo
Global ethanol production
The snapshot of biofuel production in this figuere shows global ethanol production currently concentrated in two countries.
01 Mar 2012 - by Nieves Lopez Izquierdo
Global biodiesel production, 2009
Global biodiesel production in 2009.
01 Mar 2012 - by Nieves Lopez Izquierdo
Energy efficiency of fuels - how many kilometres can we drive ?
The picture shows energy efficiency of various fuels.
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Bioenergy, general concept
The development of biorefineries can greatly support efforts to increase resource efficiency. Biorefineries integrate biomass conversion processes and equipment to produce fuel, power, and chemicals from biomass. By p...
01 Mar 2012 - by Nieves Lopez Izquierdo
Wealth of nations and energy consumption
To date, energy use and economic growth have been closely linked. As figure shows, there is a linear relationship between energy consumption and wealth as measured in the Gross Domestic Product (GDP) of nations.
01 Oct 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Green jobs
If properly planned and managed, biofuels can contribute to a number of policy objectives which support the development of the green economy. For example, because agriculture is labour-intensive, job opportunities c...
01 Mar 2012 - by Nieves Lopez Izquierdo
The enlarged biofuels family
Figure illustrates the various feedstocks, which can be converted to biofuels for transport. However, this represents only part of the larger bioenergy family, which covers liquid, solid and gaseous biofuels for differe...
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Savings in greenhouse gas emissions by fuel type
Biofuels, in the use phase, emit the carbon that has been previously absorbed during plant growth. Inputs during cultivation and conversion need to be accounted for. However, the bulk of GHG emissions are related to l...
01 Mar 2012 - by Nieves Lopez Izquierdo
Technical and sustainable biomass supply potentials and expected demand for biomass in 2050 (primary energy)
Technical and sustainable biomass supply potentials and expected demand for biomass in 2050 (primary energy).
01 Mar 2012 - by Nieves Lopez Izquierdo
Research budgets of CGIAR, Monsanto and NARS in South America
Agricultural Knowledge, Science and Technology (AKST) has the capacity to improve livelihoods, although effects have varied by region and social group. The ability to access and benefit from AKST is uneven, with industri...
03 Jan 2008 - by IAASTD/Ketill Berger, UNEP/GRID-Arendal
Public and private agriculture research and development spending by region, 2000
Investments in agricultural research and development (R&D) are still growing, but the growth rate declined during the 1990s. In addition, investment trends among countries have increasingly diverged. Investment in public...
03 Jan 2008 - by IAASTD/Ketill Berger, UNEP/GRID-Arendal
Measures of Poverty: Hunger Density
Population Density of Children Age 0-5 Underweight (per square kilometer). Children are defined as underweight if their weight-for-age z-scores are more than two standard deviations (2 SD) below the median of the NCHS/CD...
03 Jan 2008 - by The Trustees of Columbia University in the City of New York
Measures of Poverty: Child Malnutrition - Latin America
Children are defined as underweight if their weight-for-age z-scores are more than two standard deviations (2 SD) below the median of the NCHS/CDC/WHO International Reference Population. There are serious problems of chi...
03 Jan 2008 - by Copyright 2005. The Trustees of Columbia University in the City of New York
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