Scientists Turn E-Waste Into Pure Gold Using Pool Cleaner and Sunlight

In a groundbreaking development from Flinders University, scientists have unveiled a new method to extract gold from electronic waste using a mix of saltwater, UV light, and a recyclable polymer. This innovative approach eliminates the need for toxic chemicals like cyanide and mercury, providing a cleaner, safer, and more sustainable method of gold recovery.

Electronic waste, one of the fastest-growing waste streams globally, presents a huge environmental challenge. In 2022, over 62 million tonnes of e-waste were produced, with only a fraction being properly recycled. Traditional gold extraction methods from mining and e-waste often rely on hazardous substances such as cyanide and mercury, which can harm human health and the environment. But Flinders University’s new technique offers a greener alternative.

The method involves a water disinfectant compound known as trichloroisocyanuric acid, which when combined with saltwater, dissolves gold. This gold is then bound to a novel polymer made from sulfur, which is triggered by light. The polymer can be reused after the gold is extracted, making the process highly sustainable.

By using this method, the team demonstrated the potential to recover high-purity gold not only from electronic waste but also from ores and even small traces of gold in scientific waste. This breakthrough could significantly reduce the environmental impact of gold extraction and improve the economic viability of recycling efforts, particularly for small-scale operations that currently rely on harmful mercury-based methods.

As e-waste continues to rise, this technique could pave the way for a more sustainable and circular economy, reducing the need for traditional mining while providing an eco-friendly solution for recovering precious metals.

If you’re passionate about reducing the environmental impact of technology, supporting cleaner, greener mining practices, and protecting our planet, now’s the time to embrace these new methods and advocate for more sustainable solutions in e-waste recycling.

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