Can computers be recycled?

It’s a curious paradox that in an age of unprecedented environmental concern, we treat many household goods as utterly disposable.

From imported Chinese clothing which is often worn once and forgotten about to the endless pursuit of the latest smartphone, last year’s model can quickly resemble an unwelcome relic.

Electronics manufacturers are culpable in this, trumpeting marginal improvements in devices as compelling reasons to upgrade, and dismissing what was cutting-edge only months ago.

However, owners of computers are usually far more pragmatic and long-sighted than smartphone buyers.

We’ve previously outlined how a desktop PC could potentially last forever if you keep replacing worn-out or failing components.

Even so, few of us wish to keep a Noughties motherboard running eternally, while laptops and tablets are far harder to repair due to their congested inner workings.

Most consumers will therefore reach a point where an old computer needs to be disposed of.

Dumping it in household waste would break the law, and components could cause significant pollution if they were buried in landfill, so the main options are to sell the computer or donate it.

In either case, the monetary value of individual components might exceed the whole device, particularly if it has faults like a broken laptop screen or a jammed fan causing overheating.

So to return to our original question, can computers be recycled, and what future uses might be found for their various components?

I know the pieces fit

To answer the question ‘can computers be recycled’, we must start by considering what lies beneath those plastic covers.

If you’ve never looked inside a laptop case or a tower PC, this might come as a surprise.

Towers have lots of empty space which allows air to circulate, while a number of components will be plugged into a miniature shelving unit known as a motherboard.

Those components will include CPU and GPU cards, solid state or spinning magnetic hard drives, fans and (in the case of laptops) battery packs.

Laptops and tablets will also have a screen integrated into their chassis, as do all-in-one computers like iMacs.

This complicates the process of recycling compared to a traditional tower PC, where peripherals like monitors and keyboards are standalone pieces that are easily unplugged.

All-in-one devices tend to require a specialist to disassemble them. It’s easy to damage computer components while trying to remove parts, and unusual tools may be required.

LCD and LED screens may contain fluorescent backlights which shouldn’t be handled without specialist knowledge.

Once any covers have been removed, each individual component may be unscrewed and extracted – or simply unplugged, depending on the motherboard design.

Removed components can often be repurposed, with hard drives erased and sold on, fans cleaned and remarketed, GPUs potentially sold to data centres, and so forth.

Other components may require specialist disassembly to remove their precious metals before refining and reusing them in new manufacturing processes.

Plastic cases are melted down, LED screens get shredded once the aforementioned backlights are extracted, and copper/gold/silver circuit board elements may be thermally extracted.

There’s nothing to say these raw materials will be reused in another computer. They might end up being resold in bulk or have raw materials reintegrated into other hardware.

These processes must be undertaken by specialists, but the environmental benefits and financial compensations make the effort worthwhile, both monetarily and socially.

If you’re looking to dispose of an old computer, start by searching online for buyers of second-hand consumer electronics.