Royal water, or better known for its Latin name Aqua regia, is a fuming, corrosive liquid solution first invented by an Arab alchemist back in the 8th century. It is a mixture of one part of nitric ...

Electronic waste contains precious metals, which can be safely dissolved and separated with recyclable fatty acids, without the use of corrosive substances. A new technique enables the use of, for ...

Some copper and zinc smelters have been forced to cut their output because they have run out of space to store hazardous sulphuric acid in the face of poor demand for the by-product and more may have ...