01:119:150 Lecture Notes - Lecture 7: Cogeneration, Pyrolysis, Gasification
30 Sep 2020
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Document Summary
Solid waste - any unwanted or discarded material that is not a liquid or a gas. Recycling paths do not operate efficiently in modern society resulting in the ever- increasing production of solid waste due to industry; not every product ends up as waste because some are biodegradable. Us has 4. 7% of world population but produces 33% of solid waste. Paper not recycled because of resistance to recycling from the paper industry, it"s not profitable. Cans (tin cans (rusted away, did not accumulate as solid waste, worthless as iron scrap, thrown away instead of salvaged) and aluminum cans (do not rust, accumulate as solid waste)) Bottles (glass) - very well built with the intention of being used and reused many times. Automobiles and cars (owners of old cars don"t want to pay for the car to get hauled to the junkyard, scrap steel is less valuable)
