ENVI 399 Study Guide - Summer 2018, Comprehensive Midterm Notes - Water Scarcity, Recycling, Life-Cycle Assessment
ENVI 399
MIDTERM EXAM
STUDY GUIDE
Fall 2018
Sustainability
The endurance of systems and processes, and sustainable development
3 Interconnected domains:
Environment, economics and society
Plastics
-High strength, low weight, colorful
-Excellent functionality
-Low production cost
-1/4 used for packaging
-Increased 20 fold in the past 50 years
-14% of packaging is collected for recycling
-Biodegradable plastics are being utilized now
Rubber
-Natural and Synthetic rubber
-90% of all natural rubber comes from these trees in the rubber plantations of Indonesia
-Rubber recovery is difficult
-We should recycle rubber (tires)
Metals
Steel, Aluminum and copper are the most common
-Recycling rates are as follows
Steel>Aluminum>Copper
Steel is commonly used for
Construction
Aluminum is commonly used for
find more resources at oneclass.com
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Transportation
Copper is commonly used for
Electrical
Glass
-Glass can be recycled at high rates
-Over a ton of natural resources are saved for every ton of glass recycled
-One ton of carbon dioxide is reduced for every six tons of recycled container glass used in the
manufacturing process
Wood
-Wood product: construction and fuel
-Wood recycling: low
-An area roughly equivalent of the size of Greece of the worlds forests are cut down and converted to
other land uses every year
Bamboo **Professors focus
-A grass
-All over the world
-Grows very fast
-Recycling rate: low
Fiber reinforced composites are used for
Automotive
Ideal Gas Constant (R)
8.31 J/mole*C
Avogadro's Number (NA)
6.022x10^23 /mole
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
The endurance of systems and processes, and sustainable development. Increased 20 fold in the past 50 years. 90% of all natural rubber comes from these trees in the rubber plantations of indonesia. Steel, aluminum and copper are the most common. Over a ton of natural resources are saved for every ton of glass recycled. One ton of carbon dioxide is reduced for every six tons of recycled container glass used in the manufacturing process. An area roughly equivalent of the size of greece of the worlds forests are cut down and converted to other land uses every year. Because 0k is "absolute zero", where the kinetic energy of a molecule is zero. At room temperature, almost all of the elements are _________. The weight of an object is the product of its mass and the acceleration of gravity. Force is the product of mass times acceleration which is usually expresed in newtons.
