Research Article
Life Cycle Impact of Rare Earth Elements
Table 2
Share of environmental impact allocated for REOs.
| | REE | REO | | , % | , % | , % | , US$/kg | , % |
| | Lanthanum | La2O3 | La | 23.00 | 23.00 | 23.00 | 13.00 | 7.75 | | Cerium | CeO2 | Ce | 50.00 | 46.00 | 49.00 | 12.00 | 15.24 | | Praseodymium (+3) | Pr6O11 | Pr | 6.20 | 5.00 | 5.90 | 95.00 | 14.53 | | Neodymium | Nd2O3 | Nd | 18.50 | 19.00 | 18.63 | 77.00 | 37.18 | | Promethium | Pm2O3 | Pm | — | — | 0.00 | 0.00 | 0.00 | | Samarium | Sm2O3 | Sm | 0.80 | 3.00 | 1.35 | 23.50 | 0.82 | | Europium | Eu2O3 | Eu | 0.20 | 0.10 | 0.18 | 2150.00 | 9.75 | | Gadolinium | Gd2O3 | Gd | 0.70 | 1.70 | 0.95 | 75.00 | 1.85 | | Terbium | Tb4O7 | Tb | 0.10 | 0.16 | 0.12 | 1750.00 | 5.22 | | Dysprosium | Dy2O3 | Dy | 0.10 | 0.50 | 0.20 | 975.00 | 5.05 | | Holmium | Ho2O3 | Ho | 0.00 | 0.00 | 0.00 | — | 0.00 | | Erbium | Er2O3 | Er | 0.00 | 0.13 | 0.03 | 77.00 | 0.06 | | Thulium | Tm2O3 | Tm | 0.00 | 0.00 | 0.00 | — | 0.00 | | Ytterbium | Yb2O3 | Yb | 0.00 | 0.06 | 0.02 | 69.12 | 0.03 | | Lutetium | Lu2O3 | Lu | — | — | 0.00 | — | 0.00 | | Scandium | Sc2O3 | Sc | — | 0.04 | 0.01 | 7200.00 | 1.87 | | Yttrium | Y2O3 | Y | 0.00 | 2.00 | 0.50 | 50.00 | 0.65 |
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References used: —[14]; —[1], Sc2O3—[15]; —[16], Sm2O3, Yb2O3—[17].
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