Coal Tar Production Essays

1 What is coal? Coal is a substance we consider today a fossil fuel, created from all the dead plants millions of years ago. Coal is formed from prehistoric plants that when they die are not able to release the energy they built up from photosynthesis Typically the plants had fallen into large swamps and bogs, and then over time the dead plants lying on the bottom of the swamps and bogs were slowly covered with other dead plants and sediment build-up. Once buried the plants were subjected to high amounts of pressure and temperatures, which over long periods of time it becomes peat then eventually creates coal. We refer to coal as a “fossil fuel” today because it is created from prehistoric plants and the coal we have today has been millions of years since it was in plant form. Today we coal is still being created we just don’t fully recognize it because how long the process actually takes.

Coal is the dirtiest of all fossil fuels. When burned, it produces emissions that contribute to global warming, create acid rain and pollute water. With all of the talk surrounding nuclear energy, hydropower and biofuels, you might be forgiven for thinking that grimy coal is finally on its way out. On the other hand, coal is no sooty remnant of the Industrial Revolution - it generates half of the electricity in the United States and will likely continue to do so as long as it's cheap and plentiful . Clean coal technology seeks to reduce harsh environmental effects by using multiple technologies to clean. Coal is a fossil fuel composed primarily of carbons and hydrocarbons. Its ingredients help make plastics, tar and fertilizers. A coal derivative, a solidified carbon called coke, melts iron ore and reduces it to create steel. But most coal - 92 percent of the U.S. supply - goes into power production .Electric companies and businesses with power plants burn coal to make the steam that turns turbines and generates electricity. When coal burns, it releases carbon dioxide and other emissions in flue gas, the billowing clouds you see pouring out of smoke stacks. Some clean coal technologies purify the coal before it burns. One type of coal preparation, coal washing, removes unwanted minerals by mixing crushed coal with a liquid and allowing the impurities to separate and settle. Other systems control the coal burn to minimize emissions of sulfur dioxide, nitrogen oxides and

Tour guide Cheri Chantz provided a background on how coal and the mine itself were formed. The Coteau Freedom Mine was formed over 50-60 million years ago. It takes approximately ten feet of vegetation under heat and pressure forms approximately one foot worth of coal. The type of coal found at the Coteau Freedom Mine was lignite coal, which is a low quality form of coal. Lignite coal has lower energy content or BTU compared to other forms of coal due to the decrease in the amount of carbon present in the coal and an increase in impurities and water content. In fact, lignite coal is nearly one-third water.

The oil production in Canada has several significant issues that depict the destruction nature of the industry. These issues can be categorized as environmental, political, economic, and social. The environmental issues lead the pack; in that the environmental destruction associated with the industry is extensive. The environmental problems are climatic, land, water and air related (Best & Hoberg, 2015). Under climatic effect, studies indicate that the development of the tar sides has resulted to three times more greenhouse gases (GHGs) than in production of conventional oil. These environmental issues are caused by the composition of the tar sands. Unlike the convention oil, tar sands are a mixture of bitumen and sand. The process of separating the two results triples GHGs emissions when compared to conventional oil production (Koring, 2013).

Coal may be overshadowed by petroleum in Texas, but it's still here. Pennsylvanian age bituminous coal was mined in North Central Texas in sizable quantities. Bituminous coal can also be found in Cretaceous age rocks in near Eagle Pass and in the Trans-Pecos region. But the major player in Texas coal is Lignite, even though it is a lower grade coal. The Texas lignite comes from vegetative material deposited around 50 million years ago in coastal lagoon type environments, near rivers and their deltas. The material was buried before it could decay, so it sat there and was buried under more and more sediments. The enormous

It has been proven and stated by the Natural Resources Defense Council (NRDC) that “Tar sands oil is the dirtiest oil on

Two wastes that resulted from this production were coal tar and purified waste. Coal tar was a formation of less volatile chemical compounds. Coal tar’s sole purpose was for roofing and road building material. Scientists taking coal tar as a starting point developed other uses. Manufactured gas plants were creating more coal than they could find buyers for and eventually formed an emulsion with water. The tar produced spills and leaks over decades of operation. Chemicals found in coal tar were anthracene, fluorene, napthalene, pyrene and many others (dec.ny.gov). Sulfur and cyanide compounds that were being removed through purifier beds consisting of lime or wood chips formed purifier waste. Reactions took place between the gas and purifier material corroding gas pipes, stoves and lighting fixtures. Purifier beds would eventually fill up with tar and become unusable. Having to dispose of the material, the waste had a strong odor and the wood chips would ignite if left uncovered. The purifier waste would either be shipped to landfills or fill low-lying areas on premises. The cyanide compound found in purifier waste contaminated groundwater away from the burial location. The water that became affected was highly acidic and caused harm to fish and

Coal tar is extremely toxic and contains a highly carcinogenic polycyclic aromatic hydrocarbons (PAH), as well as other toxic chemicals, and at the bottom of Randle Reef there lies one million tons of coal tar. To put that in perspective, that is enough tar to fill the FirstOntario Centre over three

The energy we get from coal today comes from the energy that plants absorbed from the sun millions of years ago. When an area is to be mined, topsoil and subsoil are removed from the rock and so is another material, call overburden, to expose the bed of coal. All living plants give solar energy through photosynthesis. When plants die the energy gets out as the plants decay. The whole decaying process gets interrupted which prevents the release of the stored solar energy, then the energy stays locked in the coal. The plant material gets subjected to high temperatures and pressures which causes physical and chemical changes in the vegetation, transforming it into peat and then into coal. The formation of peat is the first step in the geological formation of fossil fuels such as coal. Peat plants is not only the first step for formation but they also capture CO2 itself. There are many effect to the environment when it comes to coal; an example is AMD which stands for Acid mine drainage; it includes the outflow of acidic water from coal mines or metal mines. Mines exposed rocks containing pyrite which reacts to water and air to form acid and dissolved iron and can easily wash into rivers and streams. Coal is a huge impact when it comes to hurting our

Tar Sands are a mixture of clay sand water and black oil that is found in various places in the world such as Venezuela and under the Canadian Forests. Most of the world’s oil currently comes from tar sands, and oil is used for gasoline. Mining of tar sands is quite tough and hard to do. The sands cannot be pumped in their natural state. It must be mined through open pit mining techniques. After mining the sands are transported to and extraction plant where a hot water process separates the bitumen from sand, water and minerals. This process releases the bitumen from the oil sands and causes tiny air bubbles to attach to the bitumen droplets that float to the top of the separation vessel, where the bitumen can be skimmed off. (Oil Shale

Coal seam gas (CSG) is mostly composed of methane and is typically attached to coal underground. This gas is released when pressure on the coal seam is reduced by removing water from the seams (Queensland Government, 2014 ). In order to obtain the gas, wells are drilled into the coal seams, bringing water from the coal seams to the surface. This process reduces pressure and allows the gas to be released (Queensland Government, 2014 ). CSG is an important energy resource in Queensland and production of this gas takes up an ever-increasing proportion of Queensland gas use.

The basic problem with coal tar is that it contains exceedingly high levels of PAHs. These compounds are considered as likely to cause cancer in humans, can cause a variety of birth defects and have been proven to cause tumors and other abnormalities in fish and other wildlife subjected to PAHs in the water

Lung disease and accidents have always led to high rates of death or disability amongst miners. The lung diseases that affect miners are called pneumoconiosis or black lung. Coal worker’s pneumoconiosis can be defined as the accumulation of coal dust in the lungs and the tissue’s. “Inhaled coal dust enters the terminal bronchioles, and the carbon pigment is engulfed by alveolar and interstitial macrophages. Phagocytes coal particles are transported by macrophages up the mucociliary elevator and are expelled in the mucus or through the lymphatic system” (Pneumoconiosis in China).

After the coal has been removed form the earth, it is still not ready for use; it must first be refined. Coal must first be separated form foreign materials, for example other minerals, to be considered useful to us. One way of doing this is called coal washing. The coal is first crushed into smaller pieces, and then a liquid is used to separate the coal based on density. Coal that is higher in density harbors more ash, so is left behind, whereas low-density coal has contains little ash and is more desirable. Another process to separate coal from foreign materials is call dry-shaling, which works without the use of liquid. After being separated, coal can be processed into coke, and eventually steel. When coal is transported, it can be by means of truck, train, or ship, and can go nearly anywhere. Truck and train transportation are the cheapest forms, particularly train if you are shipping a great amount, and ships are used for overseas transport.

Lignite is the softest coal. Further compression and aging caused the lignite coal to change into bituminous coal. Bituminous is a soft, black, brittle material that is extremely flammable and produces a lot of ash and sulfur when burned. This is the type of coal that is mined in the Appalachian Mountains, Great Plains, and the Colorado Plateau. Heat and pressure then turn bituminous into anthracite. Anthracite is the final stage of coal, and is composed almost entirely of carbon. Lignite and bituminous coal are sedimentary, while anthracite is metamorphic. Anthracite is only found where pressure and heat were very great. It doesn’t produce as much heat as bituminous coal, but it burns longer without as much residue. There are anthracite fields in Pennsylvania and Great Britain (U.S Energy Information Administration).