Copper is a naturally occurring element that’s essential for many bodily functions. It’s found in a wide range of food — there’s even trace amounts in drinking water — making it easy to ...

Copper is a major industrial metal (the third most consumed in the world) that’s used to manufacture many everyday products we’ve come to depend on, such as electrical wires, motors ...

and cobalt chloride hexahydrate 0.03. The sterilization requirement for the culture medium was sterilization at 121°C for 15 min. The activated sludge was made into sludge suspension. Sludge ...