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Comparison of different methods in bioleaching of tungsten-rich spent hydro-cracking catalyst using adapted Penecillum Simplicissimum BBRC-20019

Amiri, F ; Sharif University of Technology

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  1. Type of Document: Article
  2. Abstract:
  3. The quantity of spent hydroprocessing catalysts discarded as solid wastes in the petroleum refining industries has increased remarkably due to a steady increase in the processing of heavier feedstock. The adaptation of Penecillum Simplicissimum BBRC1-20019 with different heavy metals present in spent hydrocracking catalysts was studied. Adaptation experiments with single metals showed that the fungus could tolerate ≤ 1500 mg/L Ni, 8000 mg/L Mo, 3000 mg/L Fe, and 8000 mg/L W. In the presence of a mixture of these metals, the fungus tolerated ≤ 300 mg/L Ni, 200 mg/L Mo, 150 mg/L Fe, and 2500 mg/L W. The presence of multi-metals acted cumulatively to enhance the toxic effect in the growth of the organism. This is an abstract of a paper presented at the 7th European Congress of Chemical Engineering-7 and 19th International Congress of Chemical and Process Engineering CHISA 2010 (Prague, Czech Republic 8/28/2010-9/1/2010)
  4. Keywords:
  6. Source: 19th International Congress of Chemical and Process Engineering, CHISA 2010 and 7th European Congress of Chemical Engineering, ECCE-7 ; 2010
  7. URL: http://www.aidic.it/cet/10/21/248.pdf