1. Waste Disposal and Recycling Sec. 4-2

2. Objectives E.4.2.1 Name three methods of solid waste disposal. E.4.2.1 Name three methods of solid waste disposal. E.4.2.2 Identify ways people can control the solid waste problem. E.4.2.2 Identify ways people can control the solid waste problem. E.4.2.3 Explain how hazardous waste can be disposed of. E.4.2.3 Explain how hazardous waste can be disposed of.

3. Problems of Waste Disposal What are three methods of disposing of solid waste? What are three methods of disposing of solid waste? Burning Burning Burying Burying Recycling Recycling Each has advantages and disadvantages. Each has advantages and disadvantages.

4. Incineration Some garbage is burned in giant furnaces called incinerators. Some garbage is burned in giant furnaces called incinerators. Advantages: Advantages: Doesn’t need landfill space. Doesn’t need landfill space. Can be used to make electricity. Can be used to make electricity.

5. Incineration Disadvantages: Disadvantages: Expensive Expensive Still have waste to dispose of. Still have waste to dispose of. Release a lot of pollution. Release a lot of pollution.

6. Incineration

7. Landfills A landfill is basically a giant hole in the ground where people bury garbage. A landfill is basically a giant hole in the ground where people bury garbage.

8. Landfills

9. Landfills

10. Landfills

11. Landfills

12. Bauxite

13. Mostly Mined in Australia

14. Recycling

15. What Can Be Recycled?

16. Precycling

17. Compost

18. Compost

19. A Natural Cycle