Haragobinda Srichandan and Chandra Sekhar Gahan and Dong-Jin Kim and Seoung-Won Lee, Bioleaching of Spent Catalyst using Moderate Thermophiles with Different Pulp Densities and Varying Size Fractions without Fe Supplemented Growth Medium. journal = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology. January 2012, vol. 61(1). 45 - 51 [viewed 23 September 2024]. Available from: https://publications.waset.org/pdf/10084.