Page 93 - Materials Chemistry, Second Edition

L1644_C02.fm Page 68 Tuesday, October 21, 2003 3:07 PM
Emissions to Electricity Electricity Diff. c Sit. 2 b (TJ) Sit. 1 a (TJ) Unit water –19% 4.27 × 10 1 3.59 × 10 1 kg Bauxite (ore) –376% 1.01 × 10 3 2.12 × 10 2 kg Clay –110% 3.15 × 10 3 1.50 × 10 3 kg Coal –24% 3.36 2.71 kg Copper (ore) –5% –1.38 × 10 4 –1.32 × 10 4 kg Iron (ore) –35% 8.86 × 10 2 6.56 × 10 2 kg

Results of LCI Analysis from MSWI in Tarragona, Spain*
Diff. c –19% –8% –38% –34% –100% –19% –28% –46% 50% 100% –42% –26% –59% –59%

Electricity Sit. 2 b (TJ) 8.31 × 10 1 1.33 × 10 3 1.02 × 10 –3 9.93 × 10 –6 3.88 × 10 –3 6.54 × 10 –1 5.57 × 10 –1 4.49 × 10 –2 2.56 × 10 2 1.43 × 10 4 3.63 × 10 –5 8.39 × 10 –2 3.07 × 10 –6 1.89 × 10 –5

Electricity Sit. 1 a (TJ) Unit 6.98 × 10 1 1.23 × 10 3 7.37 × 10 –4 7.39 × 10 –6 1.94 × 10 –3 5.51 × 10 –1 4.35 × 10 –1 3.07 × 10 –2 5.08 × 10 2 1.12 × 10 7 2.55 × 10 –5 6.68 × 10 –2 1.93 × 10 –6 1.19 × 10 –5 * All environmental loads referred to the functional unit, 1 TJ of electricity produced.

TABLE 2.7 (continued) Emissions to air kg Non methane VOC kg NO x kg PAH kg Phenol kg Phosphate kg Pentane kg Propane kg Propene kg SO 2 ng TCDD-Equiv. kg Tetrachloromethane kg Toluene kg Trichloromethane kg Vinylchloride a Sit. 1 = Scenario 1. b Sit. 2 = Scenario 2. c Diff. = (Scenario 1 – Scenario 2)/Scenario 1.