30/08/2024
๐กBy recycling e-waste, we turn yesterday's technology into tomorrow's resources, promoting a sustainable future.
๐๐๐๐ฎ๐ก๐ ๐-๐ฌ๐๐จ๐ฉ๐ ๐ฉ๐ค๐๐๐ฎ! ๐ฟ๐ค๐ฃ'๐ฉ ๐ก๐๐ฉ ๐ฉ๐๐๐ ๐ฉ๐ง๐๐จ๐ ๐ค๐ช๐ง ๐๐ช๐ฉ๐ช๐ง๐.
Researchers have turned electronic waste into gold using an innovative aerogel sponge made from whey, a by-product of cheese production.
This sustainable technique not only recycles e-waste but also turns it into nearly pure, 22-karat gold nuggets. The process begins by dismantling and dissolving discarded computer motherboards in an acidic solution, then filtering out debris. The aerogel, acting as a 'gold sponge,' is then introduced to absorb the gold ions from the solution. Remarkably, this method allows for the extraction of gold with a high level of purity and efficiency, with a significantly reduced environmental impact compared to traditional methods like activated carbon. The researchers found that to recover 1 gram of gold, only 5.26 grams of the aerogel is needed, making it a third more efficient and reducing the carbon footprint by about 25%. This not only presents a cost-effective way to reclaim gold from e-waste but also addresses the issue of electronic garbage and whey surplus simultaneously. The team anticipates that this technology could be adapted to extract other valuable metals from e-waste, potentially revolutionizing how we recycle electronics and manage waste, aligning with broader environmental sustainability goals. Around 40 million tons of E-Waste is generated globally each year, which is equivalent to discarding 800 laptops every second. E-Waste constitutes 70% of toxic waste, yet only 12.5% is recycled. The bulk ends up in landfills or incinerators, releasing hazardous toxins like lead, mercury, and arsenic into the environment, which can severely impact human health, including damage to the nervous system and hindering a child's mental development.