Urban Mining: Recovering Metals From Waste

How discarded electronics contain valuable metals, why so little is recycled, and the economics of turning e-waste into a resource.

Old phones, laptops, televisions and appliances contain gold, silver, copper, cobalt, rare earths and other valuable materials. Recovering them from waste is called urban mining, because cities full of discarded electronics can be richer in some metals than natural ores.

The scale of e-waste

The Global E-waste Monitor 2024, produced by the UN and partners, found that the world generated a record 62 million tonnes of electronic waste in 2022. Only about 22 percent was documented as properly collected and recycled. The report estimated that the metals in that e-waste were worth around 90 billion dollars, much of which was not recovered.

Why so little is recycled

Collection is hard: old devices are stored in drawers, thrown away with household rubbish or sold informally.
Complex products: electronics mix many materials in small amounts, making separation costly.
Design: devices are often glued and hard to take apart.
Price competition: when metal prices are low, recycling may not pay.

Informal recycling

In many developing countries, including India, much e-waste is processed by the informal sector: workers who dismantle devices by hand and sometimes use open burning or acid baths to extract metals. This provides livelihoods but can seriously harm workers’ health and the environment. Delhi’s Seelampur area has been described as one of India’s largest informal e-waste markets.

Policy tools

Extended producer responsibility: laws that make manufacturers responsible for collecting and recycling their products. India’s E-Waste Management Rules, first issued in 2011 and updated in 2016 and 2022, apply this principle.
Design for recycling, making devices easier to take apart.
Formalising informal recyclers, giving them training, safer equipment and access to proper facilities.

The gold in your phone

A single phone contains only a tiny amount of gold. But a tonne of old phones can contain far more gold than a tonne of typical gold ore from a mine. Recovering it efficiently requires collecting large volumes and using proper refining processes, which is where urban mining becomes economically attractive.

Links to critical minerals

As demand for critical minerals rises, recycling batteries and electronics is becoming more important for supply security. Many governments now see urban mining as part of their critical minerals strategies.

Thinking recycling alone can meet demand

Recycling can supply a growing share of some metals, but demand is rising faster than old devices become available. Mining will remain necessary for years, but recycling reduces pressure on new mines and cuts waste.

Key takeaways

The world generated a record 62 million tonnes of e-waste in 2022, and only about 22 percent was properly recycled.
E-waste contains valuable metals, making urban mining economically attractive at scale.
Much e-waste is processed informally, harming health and the environment.
Extended producer responsibility, design for recycling and formalising recyclers can help.