Eng_1P03[1] - Eng 1P03 1st number = paper 2nd number =...

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Eng 1P03 1 st number = paper 2 nd number = Styrofoam Pre-manufacture Product Manufacture Product Packaging and Transport Product Use Recycling And Disposal Materials choice 1,1 1,2 1,1 NA 1,2 Energy Use 2 ,0 1,2 0,0 NA 2,2 Solid residues 3,4 0,2 3,3 NA 0,1 Liquid Residues 3, 2 0,2 2,2 NA Gaseous Residues 2,1 0,1 0,0 NA Materials Choice[1,1] paper: Large amounts of trees [virgin resource] have to be cut down to produce the paper cups. However, the paper cups should meet EPA standards and be composed of at least 30% recyclable product. 1 Styrofoam is composed of the vinyl polymer polystyrene. Polystyrene is synthesized from non-renewable hydrocarbons such as crude oil 2 . Energy Use [1,2]: To make paper, a tree must be cut down, transported to the tree to factory, cut into pulp, and then transferred to the paper company 3 . All of these are fairly energy intensive processes. The Styrofoam cup involves the extraction of hydrocarbons, energy intensive process to transform the hydrocarbon to polystyrene. 4 Solid Residues (1,3): There are no solid residues from petroleum extraction or polystyrene production. 5 Lime mud, recovery boiler ash, grits, bark, and ashes are the solid wastes that are produced by pulp production. 6 Liquid Residues (1,4): Green liquor sludge (dredge), and wastewater treatment sludge are the main sources of liquid residue, 7 none of which are extremely dangerous. Fluids that are used for lubrication during drilling contain certain toxic and dangerous, chemicals that later need to be cleaned 8 . Gaseous Residues (1,5): Cutting down the tree and then pulping produces greenhouse gases. Chemi- thermomechanical pulping produces a variety of nitrates, sulfides, sulfates, methanol, chlorate, etc. 9 Extracting petroleum causes significant amounts of methane to escape into the atmosphere. 10
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Materials Choice(2,1): Producing a paper cup requires paper(trees), water, and plastic to line the inside of the cup in order to make it waterproof. Creating Styrofoam cups requires benzene to transform styrene into polystyrene and then HCFC blowing agents to make Styrofoam. Polyethylene waterproof liner is used. Dangerous chemicals are chosen to aid the reactions in both products. Energy Use[2,2]: Very large amounts of energy are used to create paper from wood pulps, large amounts of paper are used per cup, and lining the cups requires a high thermal process. 13
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Eng_1P03[1] - Eng 1P03 1st number = paper 2nd number =...

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