1 / 1

Background

Ethylene Glycol: Fate and Effects on the Environment. Environmental Fate and Flow

duante
Download Presentation

Background

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ethylene Glycol: Fate and Effects on the Environment Environmental Fate and Flow The primary source of Ethylene Glycol in the environment is from run-off at airports where it is used in de-icing agents for runways and airplanes. It can also enter the environment through the disposal of products or containers that hold it and even in a number of foods sealed with regenerated cellulose films containing triethylene glycol and polyethylene glycol as softening agents. Ethylene Glycol is quickly broken down within water, soil and air in a matter of a few days. The chance of bioaccumulation, biomagnification or bioconcentration is low because of the low Kow value. The high solubility in water makes it easily transportable and gives it the inability to volatize into the atmosphere. Laboratory testing with this compound confirms insignificant bioconcentration in fish , The bioconcentration factor (BCF) for ethylene glycol in fish was 10 after 3 days of exposure. Background Ethylene Glycol, commonly known as the main ingredient in Antifreeze, was first produced in 1859 by the French chemist Charles-AdolpheWurtz. It was primarily manufactured on a small scale for coolant and as an ingredient in explosives during World War I. Widespread production began in 1937 after the production of ethylene oxide, component in its synthesis, became fairly inexpensive. The production of Ethylene Glycol revolutionized the aircraft industry by replacing water as an engine coolant (BP of Ethylene Glycol 197.3oC; BP of Water 100oC). Future The future of Ethylene Glycol will be filled with increased research on prevention and treatment of subjects that have become intoxicated by the substance. Advanced research on hemodialysis and fomepizole treatments have been conducted on humans and 4-Methylpyrazole, an alcohol dehydrogenase inhibitor on some mammals. • Chemical Information: • Molecular weight: 62.07 • Color: Clear, colorless • Physical state: Liquid • Melting point : -12.69 °C • Boiling point: 197.3 °Cc • Density: at 20 °C (g/cm3) 1.1135 • Odor: Odorless • Solubility: High Solubility in water • Koc: 1 (estimated) • Log Kow: -1.36e Available 4/23/2013: http://vetmedicine.about.com/od/diseasesandconditions/f/FAQ_antifreeze.htm: Available 4/19/2013: http://1000projects.org/ethylene-glycol-chemical-engineering-final-year-project.html Regulation Ethylene Glycol is regulated through the Environmental Protection Agency (EPA) and is recognized in the Toxic Substance Control Act (TSCA), the Clean Air Act (CAA), the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) and many other state regulatory agencies. The EPA has determined that exposure to ethylene glycol in drinking water at concentrations of 20 ppm for 1 day or 6 ppm for 10 days is not expected to cause any adverse effects in a child. It is recognized as a toxic chemical and also regulated by Occupational Health and Safety Administration (OSHA), and the National Institute for Occupational Safety and Health (NIOSH). References Hazards "Ethylene Glycol." - New World Encyclopedia. N.p., 2008. Web. 22 Apr. 2013. Antifreeze, used or unused, can be poisonous to animals and humans. If discharged within a septic tank or sewer system in relatively large quantity it has the potential to kill vital organisms. The required amount that is needed to cause toxicity in an animal is approximately 1.0-1.5mL/kg and 100 mL in an Adult. Intoxication causes a depressant effect on the central nervous system because of its quick absorption in the stomach and small intestine. Renal complications are the main problem that arises which in some cases lead to renal failure. U.S. Agency for Toxic Substances and Disease Registry. Division of Toxicology and Environmental Medicine/Applied Toxicology Branch. Draft Toxicological Profile for Ethylene Glycol. By ObaidFaroon. Atlanta, GA: U.S. Dept. of Health & Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry, 2007. Print. Scalley, Robert D., David R. Ferguson, Martin L. Smart, and Thomas E. Archie. "Treatment of Ethylene Glycol." American Family Physician 66.5 (2002): 807-13. Print. "Managing Antifreeze Waste." Minnesota Pollution Control Agency #4.02 (2004): 1-4. Print. Available 4/23/2013: http://www.caminoanimalclinic.com/custom_content/c_288176_antifreeze_poisoning.html Dobson, S. ETHYLENE GLYCOL: Environmental Aspects. Concise International Chemical Assessment Document 22. Geneva: World Health Organization, 2000. Print.

More Related