Study considers impact of demand for rare earth metals

This is the conclusion of a study published recently in the ACS journal Environmental Science & Technology that points out that production of dysprosium and neodymium — commonly used in wind turbines and electric vehicles — has been increasing by a few percentage points per year.

In a statement, Randolph E Kirchain, PhD, and colleagues at MIT explained that there has been long-standing concern about a secure supply of the so-called rare earth elements.

These metals are used to make aircraft components and lasers for medical imaging. Dysprosium and neodymium are critical for current technologies for manufacturing wind turbines and electric vehicles.

Those technologies, Kirchain noted, would be essential in carrying out a proposed stabilisation in atmospheric levels of carbon dioxide, the main greenhouse gas, at 450 parts per million.

Kirchain’s team analysed the supply of lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium and yttrium under various scenarios.

They projected the demand for these 10 rare earth elements through to 2035.