Josefine Bagger Sommerlund
Everyday Electronics Hide Precious Metals
Mobile phones, computers, and televisions contain trace amounts of gold that can be recovered with the right technology.
Why Is Gold So Valuable?
- Gold is corrosion-resistant, incredibly durable, and an excellent conductor of electricity.
- Its unique properties make it indispensable in modern technology.
- Natural gold reserves are dwindling — yet we continue to be surrounded by gold in everyday items.
Electronics – A Hidden Gold Mine
According to startlap.hu, many devices we use and discard still hold valuable amounts of gold:
- Mobile phones
- Computers
- Televisions
- Cameras
Even outdated models can contain enough gold to be economically worth recycling.
Other Everyday Items That Contain Gold
Gold isn’t limited to electronics — it’s also found in:
- Bank cards
- Dental fillings
- Cosmetic products
- Vintage cameras
Many of these items are thrown away, despite containing recoverable precious materials.
A Sustainable Method: Turning Whey Into Gold
Researchers in Zurich have developed an innovative method for gold extraction:
- Electronic waste is dissolved using acid.
- Whey, a byproduct of cheese production, is added.
- Proteins in the whey bind to the gold particles.
- The outcome: A purified lump of gold.
Results and Potential
- 450 milligrams of 22-karat gold extracted from just 20 circuit boards
- The method is economically sound: $1 invested = $50 in value
- It’s also eco-friendly, with a low carbon footprint
Why We Need to Rethink Waste
- Electronic waste is a resource, not just garbage
- Recycling reduces environmental harm and landfill use
- This green solution shows how technology and food production can work together sustainably
