Hidden Treasure in Trash: New Processes Unlock 22-Karat Gold from Electronic waste
Zurich, Switzerland – What many discard as junk could be a goldmine, literally. researchers have developed innovative methods to extract 22-karat gold from discarded electronic components and even selectively bind to dissolved gold using a novel sulfur polymer, offering a enduring and economically viable alternative to traditional, environmentally damaging mining practices. The advancements promise to revolutionize electronic waste management and potentially reshape the gold industry.
The traditional gold extraction process relies heavily on cyanide, a highly toxic chemical posing significant environmental and health risks. However, a team at ETH Zurich has pioneered a process to recover gold from e-waste without the use of this risky substance. Together, a breakthrough involves a sulfur polymer capable of selectively capturing dissolved gold; after controlled heating or chemical treatment, the precious metal is released in pure form, and the polymer is reusable.
This isn’t just about safer recycling; it represents a potential “paradigm shift in mining,” according to researchers.The new methods address growing concerns about electronic waste – a rapidly expanding global problem - and offer a pathway towards a circular economy. Benefits include reduced electronic waste,effective gold recovery,and the potential for job creation in areas like technological waste management,chemical engineering,and industrial sustainability.
The sulfur polymer technology, in particular, offers a sustainable and economical option for gold recovery. Beyond the ETH Zurich process, the innovation is projected to create new employment opportunities. While still in the research stage, these discoveries point towards a future where gold extraction is cleaner, more efficient, and delivers both economic and ecological advantages.