Page 94 - Materials Chemistry, Second Edition

L1644_C02.fm Page 68 Tuesday, October 21, 2003 3:07 PM

Diff. c –19% –376% –110% –24% –5% –35% –1473% –417% –19% –18% 19% –31% –80% –49%

Electricity Sit. 2 b (TJ) 4.27 × 10 1 1.01 × 10 3 3.15 × 10 3 3.36 –1.38 × 10 4 8.86 × 10 2 1.62 × 10 4 5.48 × 10 2 1.19 6.86 × 10 3 1.04 × 10 4 7.43 × 10 –4 6.41 × 10 5 4.99 × 10 1

Electricity Sit. 1 a (TJ) 3.59 × 10 1 2.12 × 10 2 1.50 × 10 3 2.71 –1.32 × 10 4 6.56 × 10 2 1.03 × 10 3 1.06 × 10 2 1.00 × 10 3 5.79 8.74 × 10 3 5.69 × 10 –2 3.57 × 10 5 3.35 × 10 1

Unit kg kg kg kg kg kg kg Nm 3 kg kg kg kg kg kg

Emissions to water Bauxite (ore) Clay Coal Copper (ore) Iron (ore) Lignite Limestone (ore) Natural gas Nickel (ore) Oil Silica (ore) Uranium (ore) Water Wood

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.