Greenhouse gases production

Greenhouse Gases Production from Some Crops Growing Under Greenhouse Conditions... 

Keywords Greenhouse gases production, wastewater sludge, fertilizers, treatments... 

Environmental and economic implications must be considered in order to make well-informed decisions on the management of soil treatments, i.e. how many, how often and what kind of organic fertilizer should be used in order to improve crop production and simultaneously limit soil deterioration and greenhouse gases production. 

A second way authors stress importance as they share background information is to describe how the research will benefit others. For example, Houser (excerpt 12M) points to environmental benefits he makes the case that understanding the process of dentrification can lead to improvements in air pollution, greenhouse gas production, and eutrophication. Finney (excerpt 12N) points to... 

Incomplete respiration, that is respiration occurring where oxygen is limited but not entirely absent and so COj cannot be generated, also leads to the production of a greenhouse gas, namely CO ... 

Another important greenhouse gas is a product of phytoplankton oxidation of ammonium. This reaction can follow two pathways ... 

A product of the second pathway, NjO, is a significant greenhouse gas. About a quarter of the annual input of NjO to the atmosphere comes from the ocean. 

Fig. B.4 (after Davidson and Keeley [5]) shows values of A plotted against thermal efficiency for a high carbon fuel (coal) and a lower carbon fuel (natural gas). It illustrates that one obvious route towards a desired low production of this greenhouse gas is to seek high thermal efficiency (another is to use lower carbon fuel).

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. 

Romm,J. (1999). (Tool Oompanies How the Best Businesses Boost Profits and Productivity By Cutting Greenhouse Gas Emissions. Washington, DC Island Press. 

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. 

Nitrous oxide has received increasing attention the last decade, due to the growing awareness of its impact on the environment, as it has been identified as an ozone depletion agent and as a Greenhouse gas [1]. Identified major sources include adipic acid production, nitric acid and fertilizer plants, fossil fuel and biomass combustion and de-NOx treatment techniques, like three-way catalysis and selective catalytic reduction [2,3]. 

Since nitrous oxide, NjO, is a designated "greenhouse" gas, and may contribute to depletion of the ozone layer, its removal from emissions to atmosphere is desirable [1]. However, there are several reports that NjO can be formed at low selectivity as an undesirable by-product of NO+CO conversions during the initial warm-up-from-cold periods in three-way-catalytic (TWC) converters or components thereof [1-3]. TWC s commonly contain Rhodium and Ceria and although N,0 dissociation over RhjO, has been extensively studied [4], the following are among mechanistic possibilities as yet... 

Mitigation of Greenhouse Gas Emissions in the Production of Fluid Milk... 

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