. A community of 500,000 people generates 6 lbs per person per day of waste. Usi

Question

. A community of 500,000 people generates 6 lbs per person per day of waste. Using the table below, we see that plastic consists of 5.6% of total disposed (collected) waste and that 20% of total generated plastic is recycled. Plastic recycling is only profitable if 100,000 lb/day are collected. Determine the composition of the generated waste. Determine whether plastic recycling is profitable in this community Recycling % Composition o Collected Waste ! | Efficiency (% Constituent of generat Food 1.6 26.2 13.3 21 5.7 5.6 30 Cardboard Yard Waste Rubber Plastic Metal Misc. 20 35 0.5

Explanation / Answer

here all weight calculations are in terms of million lbs

total waste per day= 500000 * 6= 30,00000 lbs = 3 million lbs

from the above chart plastic collected per day is 0.168 million pounds = 0.168* 1000000=168000lbs > 100000 lbs/ day

hence plastic recycling will be profitable for the community.

Constituent % composition recycling efficiency (%) weight (lbs) weight after recycling( lbs) food 11.6 0 0.348 0.348 paper 26.2 30 0.786 0.786- 0.2358=0.5502 cardboard 13.3 5 0.399 0.399-0.0199=0.379 yard waste 21 0 0.63 0.63 rubber 5.7 0 0.171 0.171 plastic 5.6 20 0.168 0.168- 0.0336=0.1344 metal 6.1 35 0.183 0.183-0.064=0.119 misc. 10.5 0 0.315 0.315

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