Table 2 Normalized quantitative values of five core environmental and economic indicators for the natural stone and ceramic tile industries in selected countries12,13,29,31.
Country | Production cost ($/m2) | Energy consumption (kWh/m2) | Water usage (Liters/m2) | Non-recyclable waste (kg/m2) | CO2 emissions (kg/m2) |
|---|---|---|---|---|---|
Spain | 13.5 | 24.0 | 2.3 | 1.0 | 3.8 |
China | 9.2 | 39.5 | 3.8 | 1.9 | 7.5 |
Iran | 8.8 | 36.0 | 3.2 | 1.5 | 6.9 |
Germany | 18.0 | 20.5 | 1.7 | 0.7 | 2.9 |
USA | 16.5 | 21.0 | 1.9 | 0.9 | 3.1 |
Italy | 14.7 | 26.0 | 2.6 | 1.2 | 4.2 |
Brazil | 11.3 | 28.3 | 2.1 | 1.1 | 4.8 |
