1 / 10

Lecture 23.3 Pollution and recycling

Lecture 23.3 Pollution and recycling. Pollution types. Coal power plant. Natural : volcanic eruptions – dust, toxic gases, ash released Human made : waste from manufacturing, burning fuels, garbage. Mt. Etna Sicily. Air pollution. CH 4 + 2O 2 CO 2 + H 2 O Combustion releases CO 2

jasmine-bolton
Download Presentation

Lecture 23.3 Pollution and recycling

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. Lecture 23.3 Pollution and recycling

  2. Pollution types Coal power plant • Natural: volcanic eruptions – dust, toxic gases, ash released • Human made: waste from manufacturing, burning fuels, garbage Mt. Etna Sicily

  3. Air pollution CH4 + 2O2 CO2+ H2O • Combustion releases CO2 • 21 billion tons a year • CO2 is a greenhouse gas Effect: world’s temperature is rising

  4. Other air pollutants • NOX compounds + sunlight creates smog • Ground-level ozone makes asthma worse • Sulfur compounds make rain pH 4-5 • Smog damages plants, crops Smog masks in Kuala Lumpur, Malaysia

  5. Water pollution Causes: • Oil spills • Fertilizers (Eutrophication) • Sewage • Heat pollution • Nuclear • Plastics & other garbage down storm drains Great Pacific garbage patch

  6. fertilizers • get into waterways • Extra nitrogen cause algae blooms • Decaying algae use up O2 in water • kills fish • Pesticides also enter the water cycle from agriculture Clear Lake, CA

  7. Land contaminants • Lead – from fuels before 1970 • Dioxin (used in making paper) causes cancer • Each person in the US throws away 1000 lbs of garbage a year • Landfills pollute ground water

  8. Reducing pollution • Cleaner, efficient cars or carpooling, mass transit • Less energy use: turning off lights, electronics • Re-useable bags for groceries, • Proper disposal of : • Batteries, electronics, & other house hold toxin • Don’t use poisons in your house or garden

  9. Recycling: the final way to prevent pollution • Yard waste into mulch • Table scraps into compost • Plastic bottles become clothing • Paper recycling could eliminate 41% of landfill space • Metal recycling reduces mining, habitat destruction Petaluma methane gas to electricity plant at Landfill site

  10. What can you to do now to have a clean world in the future? Linfan, China San Francisco, CA • Name one kind of air pollution. • Name one kind of land pollution. • Name one kind of water pollution.

More Related