Various Points Of Oil Spill Dispersant

By Author: sudarshan singh
Total Articles: 327
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Dispersants and dispersed oil are particularly toxic to corals, leading scientists to call for a ban on dispersant use near coral reefs. Dispersants and dispersed oil harm the early stages of corals by increasing death rates, reducing settlement on reefs, and altering behavior. A formulation of one of the dispersants being used in the BP spill response, Corexit 9527 has been shown to prevent fertilization of mature eggs and hinder the development of young life stages of reef-building corals. Dispersants create a toxic environment for fish by releasing harmful oil break-down products into the water.Dispersed oil has been shown to be toxic to fish at all life stages, from eggs to larval fish to adults, according to numerous laboratory studies that have tested a variety of species. Dispersants are chemicals that are sprayed on a surface oil slick to break down the oil into smaller droplets that more readily mix with the water. Dispersants do not reduce the amount of oil entering the environment but push the effects of the spill underwater. While dispersants make the oil spill less visible, dispersants and dispersed oil under the ...
... ocean surface are hazardous for marine life. Dispersants were being used in the BP oil spill to reduce the chance that the surface oil slick would reach shoreline habitats like marshes and mangroves or come into contact with animals at the surface. Oil dispersant is that dish soap, lowering the tension between oil and water and allowing small droplets of oil to break away from the larger clumps. But natural turbulence is key: in calm water, the dispersant would not help much just as the measuring cup resting at the bottom of the soapy sink would not clean itself. Dispersants have never been applied on this scale, leaving environmental scientists guessing about the consequences. Chemical dispersants remove the oil from the surface of the water and into the water column. Oil spill dispersants can be used concentrated or diluted to a ratio of 1:10 depending on the contamination level. It is an efficient and environmental friendly product containing no hydrocarbons.

Oil spills can cause a lot of distress to affected communities. It is important that oil spill response actions are explained to everyone involved including those likely to be worst affected by the oil spill. The use of oil spill dispersants can sometimes be controversial because of misunderstandings about the principle of dispersing oil and the lack of knowledge of the limitations of alternative response techniques. The purpose of using oil spill dispersants is to remove the spilled oil from the surface of the sea and transfer it into the water column where it is rapidly diluted to below harmful concentrations and is then degraded. Spraying oil spill dispersants onto spilled oil while it is still at sea may be the most effective, rapid and maneuverable mean of removing oil from the sea surface, particularly when mechanical recovery can only proceed slowly or is not possible. The use of oil spill dispersants reduces the damage caused by fl outing oil to some resources. The use of oil spill dispersants has the potential to present a small risk of temporary and local exposure to dispersed oil for some marine organisms.Dispersants are usually used on the surface of the ocean and distributed by aircraft flying over an oil spill. Using dispersants underwater is a relatively new idea; the goal of such a technique is to break up and disperse the oil before it reaches the surface. The success of a dispersant is affected by the timeliness of their use, the composition of the oil, how they are applied as well as water and weather conditions and overall climate. This lack of knowledge stems directly from the failure to require comprehensive testing of chemical dispersants as a condition for their eligibility for use in responding to an oil spill.Dispersants are usually used on the surface of the ocean and distributed by aircraft flying over an oil spill.

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