Scientists Suggest More Eco-Friendly Gold Extraction Process
Scientists from the Aalto University in Finland recently published a study in which they describe a new, nontoxic and scalable way to extract gold from metal ore. Their study was published in the “Chemical Engineering” journal. This new method uses chloride, which is one of a major pair of elements in table salt. It involves the leaching and recovery of the yellow metal. Leaching refers to the process that is commonly used to extract metals by treating a metal’s ore with chemicals that convert the metals into soluble salts. The impurities from the ore usually remain insoluble during this process.…