From: Combining the worlds of energy systems and material flow analysis: a review
Material/product | Considered in no. of models |
---|---|
Rare earth elements | 15 |
Copper | 10 |
Steel/iron | 7 |
Cement | 7 |
Aluminum | 7 |
Phosphorus | 2 |
Nano-particles | 2 |
Wood | 2 |
Various (paper, glass, refrigerants, plastics, batteries, etc.) | 5 |