Renewable energy pollution

If hydrogen is made from decarbonized fossil fuels, fuel-cycle emissions can be cut by up to 80 percent. With renewable energy sources such as biomass, solar, or wind, the fuel cycle greenhouse gas emissions are virtually eliminated. It is possible to envision a future energy system based on hydrogen and fuel cells with little or no emissions of pollutants or greenhouse gases in fuel production, distribution, or use. 

Consequently, the net OLR has increased by 0.006 W m-2 since 1880. This means that about one-third of today s thermal pollution (0.02 W m-2) is emitted from Earth. In the long term our use of non-renewable energy will cause a global temperature increase up to a point where the net OLR balances the net heat generation. Meanwhile, nature has some means of delaying global warming. 

Environmental pollution is the subject of many political and social discussions in the Netherlands. This is mainly caused by the concentration of the animal husbandry farms close to the villages and cities. There are technical treatments of air and slurry to decrease the odour of it. Anaerobic digestion is one of these. This technology is known from biogasproduction. Most countries in the western world have studied this possibility for renewable energy. A lot of technical problems are solved but on most places it is not possible to produce biogas from farm waste to a competitive price. What is the feasibility for biogas production if there is a need for reduction of the odour emission on the farm ... 

The production of hydrogen electrolytically, using clean solar power or other forms of renewable energy is essentially pollution-free. The feedstock, water, is composed of hydrogen and oxygem Hydrogen production or distribution would produce no CO. ... 

CRYOPLANE "Liquid Hydrogen Fuelled Aircraft-System Analysis". Coals A large consortium of companies, research institutions and universities of 11 European countries, co-ordinated by Daimler-Chrysler Aerospace Airbus CmbH, in which the Spanish participation was held by CASA and the Polytechnics University of Madrid, run this project. The project objective considered liquid hydrogen as the only known fuel suitable for aviation to be produced from renewable energy sources and offering extremely low pollutant emissions. 

In 1994, the National Renewable Energy Laboratory [NREL, a national laboratory of the U.S. Department of Energy (DOE)] performed a cost comparison of PCO versus other air pollution control technologies. It was determined from this study that the cost per standard cubic foot per minute (scfm) increased with contaminant concentration but fluctuated little with fiow rate. For treatment of VOC concentrations above 1000 parts per million (ppm), the PCO systems became expensive relative to other technologies (D130905, p. 3). 

The use of catalysts for exploiting renewable energy sources, producing clean fuels in refineries, and minimizing the by-product formation in industry also fall within the definition of environmental catalysis. In the future, the continuous effort to control transport emissions, improve indoor ah quality, and decontaminate polluted water and soil will further boost catalytic technology. All in all, catalysts will continue to be a valuable asset in the effort to protect human health, the natural environment, and the existence of life on Earth. 

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