Nitrogen greenhouses gases

Natural gas will continue to be substituted for oil and coal as primary energy source in order to reduce emissions of noxious combustion products particulates (soot), unburned hydrocarbons, dioxins, sulfur and nitrogen oxides (sources of acid rain and snow), and toxic carbon monoxide, as well as carbon dioxide, which is believed to be the chief greenhouse gas responsible for global warming. Policy implemented to curtail carbon emissions based on the perceived threat could dramatically accelerate the switch to natural gas. 

Excess fertilizer and combustion processes also can increase nitrous oxide (NnO) and nitrogen oxides (NOx) in the atmosphere. Nitrous oxide is a powerful greenhouse gas, and nitrogen oxides lead to smog and acid rain. The production of fertilizers requires a great deal of energy. The use of fossil fuels to supply the thermal requirements for fertilizer production further increases emission of nitrogen compounds to the atmosphere. 

Nitrite reductases (NiRs)—enzymes found in several strains of denitrifying bacteria— catalyze the one-electron reduction of nitrite anion to nitric oxide (Equation 1). - In addition to the importance of this process in the global nitrogen cycle (Figure 1), further incentive for the study of the denitrification process is provided by its environmental impact, ranging from the production of NO as a pollutant and NjO as a potent greenhouse gas, to lake eutrophication due to farm runoff that contains high concentrations of nitrates and nitrites. 

In short, the concentrations of tropospheric ozone, which is also a greenhouse gas, have also increased over the past century, an increase attributed to increased oxides of nitrogen emissions associated with fossil fuel combustion (e.g., see Volz and Kley, 1988 and Janach, 1989). 

Harrison J.A. Matson P.A. and Fendorf S. (2005). Effects of a diel oxygen cycle on nitrogen transformations and greenhouse gas emission in a eutrophied, subtropical stream. Aquatic Sciences, 67, 308-315. 

The Kyoto protocol had identified the development of an alternative biofuel from biomass as one of several areas deserving of research support, since this type of renewable fuel could help reduce greenhouse gas emissions. The use of bioethanol as a viable motor fuel to replace or augment gasoline is an attractive component of an integrated strategy to reduce the release of detrimental hydrocarbons, carbon monoxide, nitrogen oxide, sulfur dioxide, and aromatics (2-3). 

Regulatory Emissions of pollutants (carbon monoxide [CO], oxides of nitrogen [NOJ, hydrocarbons [HC], particulates) Fuel efficiency Greenhouse gas emissions Safety... 

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