Tuesday, December 10, 2013

Ethics and Global Issues

The increased demand and consumption of energy has led to invention of new types of energy. Energy is very essential in carrying out various human activities. Energy is used for heating houses, in agricultural and for industrial purposes. Energy generation is essential in meeting these needs. Consumption of energy has been high for the past few decades. Renewable and non renewable energy sources have in use. Renewable energy are the energy sources that replaced over time and thus can not be depleted. Replenishment occurs over time. Non renewable energy sources can not be replenished over time and thus are capable of being distinguished. The introduction of new sources of energy has brought about impacts to the environment (Daniel, 2009). Fossil fuels have used both domestically and commercially. The use of fossils as a source of fuel has brought about environmental due to the chemical substance released to the atmosphere. Other new types of fuel include nuclear power, solar energy, wind energy. Recycling of waste products such as plastics has been used to generate energy. All these new types of fuels have impacts on the environment. The renewable energy includes wind energy, water energy and solar energy.
   
The introduction of carbon dioxide in the atmospheres has brought about environmental impacts such as green house effect and global warming. Fossils fuels are formed from decomposition of once living organisms. Fossils fuels due to decay and compartment of organic matter and thus takes many years before they are formed. Carbon and hydrogen are the main chemical components found in fossil fuels. Fossil fuels which are commonly used include natural gas, coal and oil.  Oil deposits have become less advocating for more use of coal as a source of fuel. Coal is mainly obtained from coal deposits through mining. The use has been high, although its use has declined over the past few years. Natural gas and oil have been scarce making many developing countries adopt to use of coal as a source of fuel. The main users of coal as a source of fuel in the world include India and China. The remnants of sea organisms decompose over several years to form oil. Oil is normally trapped in the rock where it is obtained through drilling. The mostly widely used fossil fuel is oil (Meisch, 2007). Oil is heavily used in the vehicle industry. Coal and oil have more impacts to the environment compared to natural gas. Natural gas is newly adopted source of fuel. Natural gas consist of methane which a chemical substance which has impact to the environment. Power plants are used to convert fossil fuels to other forms of energy such as heat and electricity. Fossil fuels consist of hydrogen and carbon which react upon burning to produce carbon dioxide and water. Heat which acts as a catalyst is also released as a result of the reaction.
   
There is major concern over of fossil fuels due to environmental pollution.   Burning of fossil fuels leads to forming of green house gases. The rapid growth of industries has led to high use of fossil fuels which contributes to atmospheric pollution. There are various environmental impacts which occur during burning of fossil fuels to obtain other types of energy. The environmental impacts include ozone layer depletion, air pollution, green house accumulation, land degradation, acidification, plant and animals effects.
   
Global warming occurs as a result of releasing carbon dioxide in the atmosphere. Sulfur and other chemical substances are formed during burning of fossil fuels. These compounds react with oxygen to form acidic rains which are injurious to both plants and other living organisms. Global warming leads to high temperatures and increased sea levels due to melting of ice. Rising sea levels is detrimental since it affects living organism and recreational activities. Toxic substances such as vanadium are released to the atmosphere during conversion of fossil fuel to energy. Nitrous oxide is produced after burning of coal (Ann, 2006). This chemical substance causes environmental impact since it remains in the atmosphere without being recognized. Solid waste is accumulated after conversation of fossil fuels. This causes impact to the environment since waste disposal requires big land. Accumulation of solid waste is also dangerous since toxic runoff is encouraged. Toxic run off affects the environment since it affects wildlife, vegetation and marine life.
   
The increased demand of energy for both domestic and commercial has led to the invention of new types of fuels such as biofuels. Biofuels are obtained from plants. The biofuels include Bioethanol which are produced through fermentation process of sugar components in plants. Ethanol production which is mostly used in vehicles has been prospered with advance in technology. The mostly widely used biofuels is ethanol fuel which is produced by fermenting of sugar components obtained from plant material such as sugarcane, wheat, molasses and sugar beets. Enzymes are used to aid in fermenting. Biodiesel is another form of biofuels used in Europe. Biofuels have also brought about environmental impacts.

Biofuels are produced from plants. This means that huge pieces of land are put under plants which are used for fuel production. This leads to deforestation since forests have to be cleared to plant trees. This leads to land degradation. The fertilizers which are applied on plants also affect the environment. Most of the fertilizers applied on crops end up being washed in to waters sources which affect living organisms in water bodies. Toxic fertilizers affect plants growth due to the acidic in the soils. Biofuels also release chemical substance in to the atmosphere (Daniel, 2009). These chemical compounds bring about green house effect. Depletion of Ozone layer occurs after combining excess oxygen. Biogas is a new type of fuel which is obtained in an anaerobic digester. Decomposition of organic matter is aided by anaerobic bacteria.
   
Nuclear power which is obtained from radioactive substance has been widely used. Radioactive substances such as uranium are used. Uranium is a radioactive substance which undergoes radioactive decay. The half life of radioactive substances defines their dangers. Nuclear fission and nuclear fusion occurs during production of nuclear power. Nuclear reaction leads to production of huge amounts of heat which can be dangerous. This heat is tapped and converted to other forms of energy such as electricity. The use of radioactive substance in production has some environmental impacts. Radioactive substances are normally disposed in sea because of much heat they produce. This affects the living organism in the sea since the sea temperatures are increased (Daniel, 2009). The radioactive substances are also poisonous. Radioactive substances have long term effects since they affect the gene make up in human beings. Nuclear plants emit a lot of heat to the atmosphere which affects the environment. They also emit chemical substances which lead to environmental pollution.
   
Energy can also be obtained through recycling. Recycling of plastics has been used to produce new types of fuel. Plastics have been widely used in various application leading high plastic wastes. The used plastics are normally recycled using plastic recycling plants. This method has been widely used in United Kingdom. There are many varieties of plastic which can be recycled. Some of the plastic varieties include polystyrene, polyvinyl Chloride, polystyrene, low density Polyethylene and High density Polyethylene. Plastics use has much environmental impacts. Burning of plastics leads to emission of chemical substances which are released to the atmosphere. They release green house gases which cause environmental impacts. Plastics are non biodegradable and thus they stay for a long time without degrading. After recycling the by products are disposed on the surface. This cause land degradation since do not decompose.
   
Other new types which have some environmental impacts include wind energy. Harnessing of wind to produce energy has also been used. Wind energy is obtained by using wind facilities which are driven by wind. Wind energy is converted to other forms of energy by driving turbines. Environmental impacts occur since wind energy facilities have to be fixed on the land (Meisch, 2007). These wind energy conversion facilities should be installed in an open area to enable maximum utilization of prevailing wind.
   
In conclusion, there are many new types of fuels which have been introduced due to increased energy demand. These new types include fossil fuels, solar energy, wind energy, biofuels and nuclear. There are many environmental impacts due to use of these fuels. The environmental impacts include environmental pollution, acidification, green house accumulation, global warming, solid accumulation and land degradation.

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