Reductions in carbon intensity, C/E, the carbon emitted per unit of energy generated, reflect the degree to which societies decarbonize their energy sources. The long-term trend has been a shift from coal to oil to natural gas––hydrocarbons with decreasing C/H ratios emitting progressively less CO2 per joule. However, the increasing use of clean low-carbon fuels is not sustainable without somehow disposing of excess carbon because it opposes the trend in the abundance of fossil fuels, with coal resources being the most abundant followed by oil and gas. (more…)
The global cycling of carbon involves both biological and physical processes. Only the biological components are discussed here. Pl ...
The flux of carbon among terrestrial, aquatic, and atmospheric pools is at least partially controlled by photosynthetic process ...
It is of interest to examine potential sources of greenhouse gases sources or atmospheric CO2 by analysis of the global distrib ...
Climate change caused by the enhanced greenhouse effect is one of the most significant global environmental issues. Increased emiss ...
The global carbon cycle involves both biological and physical processes. Only the biological components are discussed here. Pla ...
The global dependence on fossil fuels developed during the Industrial Revolution, two centuries of economic and social development that transformed the way modern humans work and live. Most historians agree that the Industrial Revolution began in the early 1700s in Great Britain when machinery began to replace manual labor and animal power, and fossil fuels replaced wind, water, and wood as main energy sources. Before this period in history, humans manufactured goods by hand or using very simple machines, and most people worked at their homes, which were typically located in rural areas. (more…)
Fossil fuels, had a broader impact in current society, still oil is the one that have far reaching effect. Oil, in all its forms is ...
The leading automotive brands are being focused to produce electric vehicles because they believe they represent a harmony to the e ...
From prehistory until the Industrial Revolution, most energy sources used by humans were localized (i.e., available within 5–10 mil ...
Tanker transportation and oil transport functions as an important link to facilitate the flow of oil and products from their li ...
Gasoline is used mainly by cars, motorcycles, and light trucks; diesel is used mainly by heavier trucks, buses, and trains. Togethe ...
At present, in the United States and worldwide, motor vehicles are fueled almost exclusively by petroleum based gasoline (or reformulated gasoline) and diesel fuels. Since the first oil price shock in 1973, efforts have been made to seek alternative fuels to displace gasoline and diesel fuels and achieve energy and environmental benefits. Some of the alternative fuels that have been researched and used are liquefied petroleum gas (LPG), compressed natural gas (CNG), liquefied natural gas (LNG), methanol (MeOH), dimethyl ether (DME), Fischer– Tropsch diesel (FTD), hydrogen (H 2 ), ethanol (EtOH), biodiesel, and electricity. Production processes associated with gasoline, diesel, and each of these alternative fuels differ. (more…)
There are different types of vehicle propulsion systems and the transportation fuels that have been studied for their potential ...
Gasoline is used mainly by cars, motorcycles, and light trucks; diesel is used mainly by heavier trucks, buses, and trains. Togethe ...
The energy efficiencies of various fuel production pathways from well to pump. The efficiencies shown are defined as the energy ...
The United States depends heavily on imported oil to fuel its transportation infrastructure. The use of alternative fuel derive ...
Most alternative fuel vehicles on the road today were originally designed for gasoline, but converted for use with an alternative f ...
Agricultural and forestry residues provide the largest proportion of biomass used for the production of biomas bioenergy. Some estimates suggest that globally available biomass role in the form of recoverable residues represents about 40 Ejyr -1, enough to meet 10% of the total present energy use of 406 Ejyr -1 . However, realizing this potential is limited by factors such as ease and cost of recovery and environmental concerns relating to sustainable land use practices. (more…)
Estimation of the future technical potential of biomass as an energy source is dependent on assumptions with respect to land av ...
The quantification of the actual reduction in green house gases sourcess emissions resulting from the substitution of fossil fu ...
Bioenergy produced from biomass is sometimes called a carbon-neutral energy source, because the same quantity of carbon released wh ...
To date, most discussion and research relating to the various of biomass role in mitigating CO2 emissions has been focused around i ...
Another large source of renewable carbon supplies is waste biomass. It consists of a wide range of materials and includes munic ...
The hydrogen can come from various sources including fossil fuels, wind, solar, biomass, nuclear, solar thermo-chemical reactions, and solar photolysis. (more…)
Researchers at the Institute of Chemical Technology have developed a new catalyst that allows to obtain, from bioethanol, hydrogen ...
Hydrogen has many applications when it comes to fuel. It can be used both in internal combustion engines and hydrogen fuel cells. ...
The issues of hydrogen storage run through the hydrogen production, hydrogen transport, supply and demand for end use of hydrog ...
Most production systems try to become first full-scale production begins as small toys and devices of concept. The Horizon hydr ...
With ethanol’s future uncertain, many commentators see the transportation debate evolving into a war between two other technologies ...
Coal is an important energy source and energy consumption in United States as well as worldwide. It will remain so for many years particularly in many developing countries. Fossil fuels stay as the main energy sources to the U.S. economy, but we can not ignore the importance of coal for decades. Coal production provides the price stability and will continue to be an significant source for electricity generation. Coal utilization is the major source of hydrogen in the coming hydrogen-based energy economy and it will be a crucial source of gas to liquid process of fuels energy.
Coal utilization and the importance of coal as source of energy industry perspective will change over time. (more…)
Anyone who wants to save money on gas should be interested in the process of underground coal gasification, or UCG. It is an al ...
Natural gas and oil are common source energy used to give electricity. How efficient is coal if we compare to these other source of ...
Power consumption from electricity is an essential element of the U.S. economy since the beginning of the century. Coal power plant ...
Fossil fuels, had a broader impact in current society, still oil is the one that have far reaching effect. Oil, in all its forms is ...
The pilot plant for carbon dioxide capture and hydrogen production using combined cycle ELCOGAS Puertollano "will be the first in t ...
Brazil produced about 18.5 million metric tones (20.4 tons) of processed sugar in the 2001/2002 harvest, with approximately 9.45 million metric tones (10.4 tons) used domestically and the rest exported. Brazilian sugar is mostly derived from sugarcane, a drought-tolerant tropical and subtropical crop containing about 12 to 17% sugars (90% sucrose, 10% glucose) and 68 to 72% moisture. Brazil grew about 272 million metric tones (300 million tons) of sugarcane in the 2001/2002 season, making it second to India in world cane production that year. In 1975, Brazil adopted a Pro-Alcool Program to convert sugar to ethanol to reduce dependence on petroleum imports that were damaging the economy. (more…)
The French Union of Petroleum Industries (UFIP) announced that from Wednesday 1 April, the French vehicles may use a new fuel cal ...
Because transportation is such a large contributor to global warming, both globally and in the United States, climate and energy ex ...
The global cycling of carbon involves both biological and physical processes. Only the biological components are discussed here. Pl ...
The future development of energy crops, to the level at which they would replace residues as the major bioenergy fuel source, will ...
The increase in the prices of major fuels, like gasoline and diesel fuel products is a major global problems recently. Those pr ...