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Flashcards in Waste Deck (12):
1

What are the traditional methods of waste disposal?

Landfilling, incineration

2

What is the liquid waste of a landfill called?

Leachate

3

What materials are used to prevent flow of leachate into water reservoirs and away from landfills?

Layers of clay and impermeable membranes

4

What are possible byproducts of the incineration of wastes?

(NOx)s, SO2, aerosols, PAHs, acidic gases, heavy metals, and dioxins

5

What are the most commonly recycled metals?

iron/steel, aluminum, copper

6

What is the most beneficial aspect of glass recycling?

The quality of glass does not decline even after it has been recycled many times

7

What are the most commonly recycled plastics?

PET and HDPE

8

What is pyrolysis?

Heating plastics to high temperatures in the absence of oxygen to break them down into their constituent components

9

What happens to the quality of fibers in paper as it is recycled?

Continual decline in quality

10

What are the two categories that radioactive waste is divided into?

Low-level and High-level

11

What differentiates low-level radioactive waste from high-level wastes?

Shorter half-life and lower radioactivity

12

For what duration of time must low-level wastes be contained if undergoing near-ground disposal?

Up to 500 years