Clean Coal Technology

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

Clean coal is proposed as being an emission cleaner form of regular coal, because it reduces the amount of sulfur-dioxide, and nitrogen oxide that is produced by burning coal. It does this by removing impurities from the coal that are contributing to the higher emissions within regular coal, which is created through “clean coal technology”. Clean coal is obtained just like regular coal through either mining it or by mountaintop removal. A technique called coal washing is used to remove impurities, such as sulfur and other unwanted minerals, by washing them in a liquid to remove them.

Imagine a world where the air is always clean, free of pollution. A place where children with asthma need not to worry of the air quality in the inner cities. A world where the energy produced to heat a home, turn on a light bulb, and charge your cellphone is always abundant and affordable. Doesn’t this world sound like a wonderful place? Turns out this world isn’t just a figment of the imagination. In fact, we are on the verge of a technological breakthrough that can take steps towards making this fantasy a reality. What is this innovation? It is Clean Coal Technology.

Fossil Fuels are extremely harmful to the environment, especially in the ways the fuel is obtained, such as mining or hydraulic fracturing. Coal, a commonly used fossil fuel, can be obtained by strip mining, mountaintop mining, or underground mining (“Coal Explained”). Strip mining has disastrous effects on the environment because of the destructive nature of the process, which removes all soil, rock, trees, and plants above coal deposits. The runoff from this pollutes streams and rivers nearby, which can harm aquatic life and disfigure the body of water,

Clean coal technology usually addresses atmospheric problems resulting from burning coal. Historically, the primary focus was on sulfur dioxide and particulates, since it is the most important gas in the causation of acid rain. More recent focus has been on carbon dioxide (due to its impact on global warming) as well as other pollutants. Concerns exist regarding the economic viability of these technologies and the timeframe of delivery, potentially high hidden economic costs in terms of social and environmental damage, and the costs and viability of disposing of removed carbon and other toxic matter. More, the byproducts of coal power production range from fly ash sludge ponds full of mercury, arsenic, and sulfur in unlined ponds that can leak into the water supply.

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

Jason Hayes, communications director for the American Coal Council says “the industry over the past few decades had invested over $100 billion in cleaning up emissions and it’s already been effective. All of the important noxious pollutants have decreased markedly over the last 30 to 40 years. We’ve been doing all of this on top of dealing with everything else.” Coal may not be green, but it is a source of energy American needs. It is cheap and efficient. Without coal, America wouldn’t be anywhere near where it is today. The coal mined here isn’t just used for energy. America’s

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.

Coal seam gas is a much cleaner source than for example, burning fossil fuels. Water contamination

Coal releases dozens of hazardous substances that can be harmful to human health. These are just four of the many things that coal releases: Mercury, particulate matter, nitrogen oxides, and sulfur dioxide. Every one of these act on the nervous system to cause loss of intellectual capacity. Exposure to coal dust can lead to black lung disease, or pneumoconiosis, which took the lives of 10,000 miners worldwide over the last decade. Black lung disease is similar to diseases you can get from smoking tobacco for a long period of time. This disease is most common with coal miners, because they are constantly exposed to the dangers coal causes. Coal affects not only the human respiratory system, but also the cardiovascular and nervous system. This

On top of emitting 1.9 billion tons of carbon dioxide each year, coal-fired power plants in the United States also create 120 million tons of toxic waste. That means each of the nation's 500 coal-fired power plants produces an average 240,000 tons of toxic waste each year. A power plant that operates for 40 years will leave behind 9.6 million tons of toxic waste” (2009). Coal Combustion Residue despite containing toxic metals such as arsenic, mercury, lead, selenium, and cadmium that are proven to cause cancer, kidney problems, birth defects, and wreck havoc on the nervous system. Coal Combustion Residue can is disposed by either being land filled, used to reclaim mine shafts, or are stored in pits on-site of coal burning plants. Even without a spill these contaminants can leach into the ground and pose a health risk if they are not disposed of properly.

With that being said here are some environmental impacts of coal you may not know about. The air pollutants cause acid rain, smog ,respiratory illnesses, cancers and toxins in the environment. Coal miners can get respiratory illnesses from the coal dust while mining. If an abandoned coal mine catches fire it puts tons of mercury into the atmosphere, this happens every year and is responsible for three percent of carbon dioxide emissions globally. The second largest contributor to

In the matter of clean-coal technologies, Alex supported his position better. His information was all relevant to the discussion and his reasoning was sound and free of fallacies.

As the world we live in today continues to become more focused on “going green” and doing more to protect the environment, clean coal technology is one of the key focal points to look at. In 2003, each person in the United States consumed, on average, 3.7 tons of coal (Ristinen, and Kraushaar 19). This number has obviously increased year by year, and today it looms as a massive number. Coal usage has some well-documented detriments to the environment. Atmospheric problems, sulfur dioxide and acid rain, and global warming issues all can be directly linked to the heavy usage of coal burning. We Americans use massive amounts of coal each year, so naturally finding more clean and

CO2 is the most significant greenhouse gas, which mainly comes from the use of fossil fuels. Many people feel that content of CO2 in the atmosphere is the main reason for manmade global warming. The main sources of CO2 emissions involve electricity generation, industrial processes, fumes from transportation and commercial buildings and use. Emissions of greenhouse gases, such as CO2, to the atmosphere are expected to cause even more of a significant change in global climate (Davison, 2007). The main focus to try to reduce the amount of carbon dioxide in the atmosphere is to reduce the amount that is released from coal-fired power plants. Greenhouse gas emissions that involve the productions of electricity come from natural gas production and coal-fired power plant operations. Natural gas production accounts for twenty-four percent and coal-fired power plant operations accounts for seventy-five percent, while the other one percent is caused by other electricity generation operations. The main reason why coal-fired power plants have a higher percentage of emissions is because the sulfur content of coal is much higher than that of other fossil fuels (Jarmaillo et al., 2007). This proves that there is a great need to find an alternative fossil fuel to use instead of coal. Although coal is easy to mine, transport and process for the electricity generation process, it is also the