Metal recovery is a research area focused on developing and implementing processes for the extraction and reclamation of metals from various sources, such as industrial waste, electronic waste, and mining tailings. This research aims to recover valuable metals, such as gold, silver, copper, and rare earth elements, in an environmentally sustainable and economically viable manner. Metal recovery techniques can include pyrometallurgical processes, hydrometallurgical processes, and bioleaching, among others. Additionally, research in metal recovery also explores ways to reduce the environmental impact of metal extraction and processing, as well as the development of new technologies to improve metal recovery efficiency.