Base Metal (BM) and Rare Earth Elements (REE) Extraction Using Geothermal Water

There are several metals, base metals and rare earth elements which can be extracted using geothermal water. This chapter talks about such methods which helps to extract individual type of elements. The most popular methods are adsorption, ion exchange, solvent extraction, molecular recognition technology and magnetic segregation. Some precious metals like gold and silver are extracted from geothermal energy using heap leaching method. Heap leaching is one of the cheapest method for gold and silver extraction. For silica extraction form geothermal energy is performed using cascade method. Whereas for helium and lithium recovery swing adsorption method is world widely accepted. Ion exchange method technique is applied for the zinc and manganese removal using geothermal water. The system ends with a note on hybrid approach for base metal and rare earth element extraction.