A life-cycle assessment (LCA) of corn ethanol was conducted to determine the reduction in the life-cycle greenhouse gas (GHG) emissions for corn ethanol compared to gasoline by integrating biomass fuels to replace fossil fuels (natural gas and grid electricity) in a U.S. Midwest dry-grind corn ethanol plant producing 0.19 hm y 1 of denatured ethanol. The biomass fuels studied are corn stover an...

The introduction of ever more stringent diesel emission standards is associated with a reduction in greenhouse gases. These limitations push many researchers working this field to look for alternative solutions the aim lower gas emissions. One alternatives use fuels and additives order reduce consumption fossil fuels. such as ethanol, methanol others combination traditionally used technologies ...

background: the combustion of sulfur-rich fossil fuels leads to release of sulfur oxide pollution in the environment. in biodesulfurization process, an organism is able to remove sulfur from fossil fuels without decreasing the caloric value of those substrates. the main aim of this research was to design a recombinant microorganism to remove the highest amount of sulfur compounds in fossil fuel...

The objective of this paper is to view climate change in the framework of economic growth under no controls on emissions as the baseline modeling for further research in formulating an environmental treaty. This paper analyses the economic growth with dynamic of emissions and its impacts under an overlapping-generation model. The burning of fossil fuels main source of greenhouse gases, and rene...

The major part of worldwide energy production concerns fossil energy. Therefore, concomitant carbon dioxide production is a problem. What are suitable alternatives? Here we present considerations for selection of energy sources needed for future worldwide energy consumption. Plants are collectors and converters of sunlight and are indispensable in the carbon cycle. This cycle converts sunlight ...

Given the unlimited needs of mankind and the limited resources available, human beings have always been thinking about how to use the available resources and facilities optimally. Energy plays an important role in economic activities and it is of great importance in agriculture. Over the past four decades, energy consumption in the agricultural sector has increased tremendously. In Iran, energy...

Renewable biomass and biomass derived fuels could readily replace fossil fuels in many of the present energy utilization applications with concomitant environmental benefits. Gasification is a form of biomass energy conversion producing a fuel that could substitute for fossil fuels in high efficiency power generation and CHP applications. While fossil fuel resources are heavily concentrated in ...

Firstly, I wish to thank you for the invitation to say a few words at the opening of this important workshop. At the beginning of the XXI century an increase of awareness rose that the fossil fuel resources are limited in the planet we inhabit. Their production costs and therefore their prices tend inevitably to increase and their intensive usage has a significant impact on the environment. In ...