Why Recycling a Tonne of Metal Rarely Spares a Tonne of Ore
A systematic review of 247 studies found that recycling, reuse and sharing often do reduce demand for new resources, but rarely on a one-for-one basis. Recycling a tonne of metal, for example, does not necessarily prevent a tonne of virgin metal from being extracted.
A conceptual study published this year gives that awkward arithmetic a name: circular rebound effects. Its lens is not simply lost efficiency but the way circular strategies interact with infrastructure, governance, market expansion and demand patterns.
The volumes involved are not small: the Global E-waste Monitor records 62 million tonnes of e-waste generated globally in 2022, of which only 22.3 per cent was documented, collected and recycled in an environmentally responsible manner.
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Which means a headline like “we recycled a million tonnes” can be perfectly true and still tell you almost nothing about whether any virgin material stayed in the ground.
Fair, but rebound is a second-order worry when the first-order number is 22.3 per cent — most of 2022's e-waste was not even documented, collected and recycled responsibly. Precision about offsets starts to matter once collection stops being the bottleneck.