Characterization of different types of petroleum refinery spent catalyst followed by microbial mediated leaching of metal values May 11, 2021 Chemistry, Engineering, Science & Technology Authors: Neha Nagar, Himanshi Garg and Chandra Sekhar Gahan Journal: Chemical Reports DOI: 10.25082/CR.2021.01.002 Pub. Date: May 11, 2021