Harrison Elba
SHWPCE HW 2
1. 100 tons X $10= $1000/day
Average waste ~4.5 lbs per person per day * 1500 population*365*2000 lbs/ton = 1230
tons/year
In 4 years = 4900 ton capacity of landfill
Daily waste with furniture = 4.5*1500/2000 + 100 = 103.4 tons/day
4900/103.4=47.4 days capacity
2. 8.5X11 copy paper
Between CNG, SCG and UI, estimate 10,000 reams/ year
50,000 lbs
3. P= 8 tons/ (2*2*10) = .2 tons/ft2 = 2.777 lbs/ in2
4. I would argue against the indiscriminate incineration of waste producing toxic emissions and
instead suggest domestic cleaner fuels (gas) and renewable energy
5. One form of refuse can transfer it’s water content to another (drier) form upon contact, in the
can, in the truck or in a landfill. This moisture content is an important factor on energy
conversion and decomposition. Wet garbage will consume more energy and during the energy
extraction process and therefore is less desirable than low moisture content refuse.
6. Paper= 50%
Garbage = 20%
Aluminum= 10%
Plastics= 10%
Other= 10%
7. Code is the identifier on plastic that indicates what type of plastic and how it should be recycled.
Switch refers to the sensor that sorts and separates the types of plastics by sensing the code.
8. They respond by appealing to consumers that plastic is a boon to packaging. Also they post
lobbyists to ensure that legislation is carefully examined.
9. Population = 100,000
Storage= 180,000 cubic yards
Daily waste= .7*4.5*100,000 = 315,000 lbs
Volume = 315,000/200= 1575 cubic yards
Compaction = 1575 * 200/900 = 350 cubic yards/day
180,000/350= 514.3 days to fill storage
10. As-received- this heat value includes waste containing water, organic and inorganic matter
Moisture free- no moisture content
Moisture and ash free- no moisture and no inorganic content
11. The objective is to reduce refuse going to landfills (apparently 50% is the target) . There are
many methods to waste reduction- including reuse, recycling, recovery and minimization.
To accomplish, we would first have to characterize the states waste composition. This allows us
to develop the most suitable plan of action on how to divert waste and reduce landfill volumes.
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I would include the alternative pathways recommendation in the mandate instead of leaving it
up to the towns to decide what works best because inevitable they will take the easy and cheap
way out if there is no state leadership.
It is not recycled because there is no infrastructure in place to recycle it.
Volume: loose ~ 1 cubic yard, baled ~.2 cubic yard
Density: loose ~ 100 lb/ cubic yard, baled Q~ 600 lbs/ cubic yard
21.6% H2O
Dry 27.5% H2O- living in an organic water based environment would lead me to believe that the
wet basis is more realistic and useful
(82-71)/82 = 13%
5265 btu/lb
383700/78.45= 4891 btu/lb
10 lbs/ft