click here for more info:-https://bit.ly/2svUD0p
Desorption does not require sodium cyanide, which reduces cost and averts pollution.That drives the market. In gold electrowinning process,when the electrolysis equipment is added with anions which are more easily absorbed by activated carbons, AuCN2 is replaced by anion and the gold desorption is achieved. After the carbons loaded with gold are desorbed, pregnant solution is process via ionization. At last, solid gold is attained.