Debabrata Pradhan and Dong J. Kim and Jong G. Ahn and Seoung W. Lee, Microbial Leaching Process to Recover Valuable Metals from Spent Petroleum Catalyst Using Iron Oxidizing Bacteria. journal = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology. February 2010, vol. 38(2). 232 - 236 [viewed 19 September 2024]. Available from: https://publications.waset.org/pdf/949.