Cleaning Up After The Exxon Valdez Was A Mistake
Through many hours of research I have determined that the spill cleaning techniques used to clean the Prince William Sound area of Alaska did more harm than leaving the oil where it was. The Alaskan oil spill has become the most studied and managed event of its kind. Although there is not much that can be done about the marine life that came into direct contact with the crude oil, the geologic effects that the oil introduced into the area should have been left to nature to repair. To understand the effects of the oil to the area, it is best that you know a little bit about the oil itself.
There are many types of crude oil, but in general they contain hundreds, even thousands of ...
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exceptions are some of the aromatic compounds, including benzene and toluene.
After a crude oil is spilled in a marine environment, many processes follow.
Typical crude has a density of about 0.85, more or less, and this factor combined with winds, wave action, and currents leads to spreading, which is very rapid during the first 24 hours. During that period most of the components having boiling points below 200[deg.]C volatilize. As a result some of the toxic chemicals such as benzene are removed. (The composition of the floating mixture is further changed immediately and later by photooxidation, biodegradation, dispersion, and dissolution. About a day after the spill, depending on temperature and wave action, an emulsification of oil and sea water occurs, leading to formation of a highly viscous material that contains about 70% water. This material is very sticky, and it adheres to almost all objects that it encounters, including birds and sea otters. Abelson) There has been ...
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usually make up part of any naturally produced oil-clay floc.
Flocculation also helps explain another formerly puzzling observation: the relatively rapid disappearance of oil from even quiet, sheltered bays. Most researchers expected oil to persist in these areas, where abrading waves and sediment movement seldom occur, even during storms. But experiments by Bragg and his co-workers showed that waves too weak to move sediment sands could still drive the flocculation-fostered removal of oil, initially at rates of 3 percent per hour. Bragg says it now appears that every ebb tide may remove some oil - even after heavy weathering has rendered oil tarry and very insoluble in water.
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"Cleaning Up After The Exxon Valdez Was A Mistake." Essayworld.com. March 29, 2006. Accessed November 28, 2024. http://www.essayworld.com/essays/Cleaning-Up-After-Exxon-Valdez-Mistake/43539.
"Cleaning Up After The Exxon Valdez Was A Mistake." Essayworld.com. March 29, 2006. Accessed November 28, 2024. http://www.essayworld.com/essays/Cleaning-Up-After-Exxon-Valdez-Mistake/43539.
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