The life cycle inventory data for soybean oil after allocation are given in Table 15.11.

Table 15.11: 

Answer the following questions using the data available here. Discuss the shortcomings of each step in brief.

1. Perform the classification and characterization of these emissions and resource use into various life cycle impact categories. Can you combine or compare the results of different impact categories? Why or why not? 

2. Normalize the results of characterization using the figures for global emissions given in the table. What is the benefit of this normalization step? Can the impact categories be combined now? Justify your answer.

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Table 15.11 Life cycle inventory of soybean oil. Adapted from [5]. Soy bean production Contribution factors Energy resources (GJ) Emissions to air (kg) CO₂ CO Hydrocarbons NO.x SO₂ Particles Liquid particles in air Emissions to water (kg) Nitrogen Phosphates Potassium oxide Calcium oxide Magnesium oxide Insecticides Herbicides Oil Hexane Solid waste (kg) High risk Industrial 2.14 1.24 97.2 0.021 0.01 0.15 0.71 0.032 212 60 120 45 36.4 25.7 3.54 Steam Electricity Transport by Bean oil production production road production 0.51 1.77 83.3 0.021 1.03 0.26 0.07 0.0006 0.0013 - - 0.12 75 0.68 46.9 0.00229 0.004 0.0009 0.0058 0.001 III|IIII 0.00013 0.000052 28.6 0.25 23.1 0.057 0.04 0.34 0.03 0.023 0.43 III II - 1.29 TOTAL 3.95 250.5 0.101 1.08 0.75 0.81 0.033 0.025 212 60 120 45 36.4 25.7 3.54 0.0013 1.29 0.00013 0.12