AN IMPROVED PROCESS FOR THE EXTRACTION OF RARE EARTH ELEMENTS AND PRECIOUS METALS FROM SEWAGE SLUDGE

摘要

The present invention relates to a process for the Extraction of Rare Earth Elements and Precious Metals from Sewage sludge in a simple, safe, cost effective, environment friendly and efficient manner. The process herein after named Gnano Swamy Tandagayya Crawford Caplan Morra Chetty process for the Extraction of Heavy metals, Rare Earth Elements and Precious Metals from Sewage Sludge