Table 17.8 shows the carbon and nitrogen footprints for transportation fuels. Answer the following questions based on
Question:
Table 17.8 shows the carbon and nitrogen footprints for transportation fuels. Answer the following questions based on these data.
Table 17.8:
1. Plot the footprints for fossil and first-generation biofuels and determine the Pareto curve. Identify the feasible and infeasible regions for this curve.
2. Now include the points for second-generation biofuels. Do they expand this design space? Justify your finding.
3. Discuss how you would use these results to choose the "best" transportation fuel(s).
Transcribed Image Text:
Table 17.8 Carbon and nitrogen footprints of transportation fuels [8]. Nitrogen footprint Carbon footprint Gasoline E10 corn E10 yellow poplar E10 switchgrass E 10 LIHD E 10 MSW E10 newsprint E 10 stover ethanol E10 stover thermo E85 corn E85 yellow poplar E85 switchgrass E85 LIHD E85 MSW E85 newsprint allocation E85 newsprint as waste E85 stover mass allocation E85 stover monetary allocation E85 stover as waste E85 stover thermo mass allocation. E85 stover thermo monetary allocation E85 stover thermochemical as waste Butanol mass allocation Butanol monetary allocation Butanol as waste Diesel B20 soybean B20 stover mass allocation B20 stover monetary allocation B20 stover B100 soybean B100 stover mass allocation B100 stover monetary allocation B100 Stover as waste 2.18E-04 2.20E-04 2.09E-04 2.05E-04 2.05E-04 2.00E-04 2.01E-04 2.03E-04 2.01E-04 4.62E-04 3.26E-04 2.77E-04 2.86E-04 2.24E-04 2.56E-04 2.38E-04 4.00E-04 3.33E-04 2.55E-04 3.88E-04 3.10E-04 2.38E-04 6.79E-04 5.41E-04 4.35E-04 3.23E-04 3.57E-04 3.70E-04 3.58E-04 3.43E-04 5.12E-04 6.04E-04 5.30E-04 4.36E-04 2.96E-01 2.84E–01 2.74E-01 2.72E-01 2.72E-01 2.74E-01 2.72E-01 2.71E-01 2.71E-01 2.30E-01 1.11E-01 8.55E-02 9.46E-02 1.13E-01 6.69E-02 8.48E-02 1.28E-01 1.07E-01 8.29E-02 1.26E-01 1.04E-01 7.89E-02 1.59E-01 1.16E-01 8.71E-02 2.57E-01 2.38E-01 2.33E-01 2.29E-01 2.24E-01 1.65E-01 1.48E-01 1.22E-01 8.96E-02 Type Fossil First gen. Second gen. Second gen. Second gen. Waste Waste Second gen. Second gen. First gen. Second gen. Second gen. Second gen. Waste Waste Waste Second gen. Second gen. Waste Second gen. Second gen. Waste Second gen. Second gen. Waste Fossil First gen. Second gen. Second gen. Second gen. First gen. Second gen. Second gen. Waste
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Sustainable Engineering Principles And Practice
ISBN: 9781108420457
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