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A metal-eating microbe that thrives in toxic soil has stunned scientists by excreting tiny particles of 24-carat gold — nature’s own alchemist in action
By emulating this microorganism, scientists hope to develop bioreactors or engineered microbes to extract gold from electronic waste, mine tailings, or low-grade ores. (News18)
An extraordinary microorganism has been discovered that feeds on metal from toxic soil and excretes tiny particles of pure 24-carat gold.
Gold: The Most Popular Precious Metal
Gold remains the world’s most sought-after and valuable metal, despite some rarer metals costing more. Typically found deep within the Earth’s crust or in river sediments, gold was not formed on Earth but arrived either during the planet’s formation or via meteorites and asteroids.
Now, scientists have identified a microbe capable of turning toxic metals into actual gold.
Who Discovered This Microbe?
Researchers from Australia and Germany revealed the secrets behind this unique microorganism, known as Cupriavidus metallidurans. It has evolved a remarkable defence mechanism to survive in highly toxic, metal-rich environments by neutralising harmful metals such as gold and copper.
How Does It Work?
The microbe triggers a chemical reaction that produces gold particles on its surface, effectively acting as nature’s alchemist by transforming deadly metals into valuable gold.
Its specialised metabolism relies on metal-resistant genes that enable survival in poisonous habitats.
Special Enzymes Create Gold Nanoparticles
When exposed to gold ions, the microorganism produces enzymes like CopA and CupA, which reduce gold ions to nanoparticles. These tiny particles are then expelled, helping the microbe to survive while producing minute amounts of pure gold.
This discovery offers exciting potential for practical uses.
Towards Environmentally Friendly Gold Mining
This remarkable microbe could revolutionise gold mining, a process currently associated with environmental damage and high energy use. By emulating this microorganism, scientists hope to develop bioreactors or engineered microbes to extract gold from electronic waste, mine tailings, or low-grade ores.
This method could significantly reduce environmental harm and transform waste into valuable resources. Unlike traditional methods, which are costly and involve toxic chemicals, microbe-based gold extraction promises to be more sustainable and affordable.
Researchers are optimistic about its potential to transform the mining sector.
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