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CE 3231 - Introduction to Environmental Engineering and Science

CE 3231 - Introduction to Environmental Engineering and Science. Readings for Next Class :. O hio N orthern U niversity. Chemistry, Microbiology & Material Balance. Introduction. Water & Air Pollution. Env Risk Management. Arsenic and Bangladesh

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CE 3231 - Introduction to Environmental Engineering and Science

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  1. CE 3231 - Introduction to Environmental Engineering and Science Readings for Next Class: Ohio Northern University Chemistry, Microbiology & Material Balance Introduction Water & Air Pollution Env Risk Management Arsenic and Bangladesh The largest mass poisoning event in human history is currently occurring in the Bengal Delta due to the presence of arsenic in groundwater wells used for drinking water. More than 50 million people are impacted and the problem is as much the fault of relief efforts as it is an unlucky happenstance. Here is the story….

  2. Lecture 8Arsenic in Bangladesh(Chemistry V)

  3. Organic Chemistry Review

  4. Arsenic • Source = nature FeAsS – arsenopyrite ore As2S3 – orpiment mineral As4S4 – realgar mineral http://en.wikipedia.org/wiki/File:Mineraly.sk_-_realgar.jpg http://upload.wikimedia.org/wikipedia/commons/8/8b/Native_arsenic.jpg http://upload.wikimedia.org/wikipedia/commons/b/bf/Orpiment_mineral.jpg

  5. Arsenic Toxicological Properties • ~ 42 mg of arsenic trioxide will kill an adult • Acute and chronic systemic effects • Established carcinogen • Zero acceptable exposure level • Current regulation (10 ppb)

  6. Bangladesh - 150 million people, density of ~ 1000 people/km2

  7. Arsenic Poisoning in Bangladesh • Arsenic: The Largest Mass Poisoning in History

  8. Arsenic Poisoning in Bangladesh • The Cause

  9. Arsenic Poisoning in Bangladesh Engineered Solutions

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