Journal of Advanced Chemical Engineering

Mohamed Farag Twibi

Publications

• Case Report
  A Bioleaching Regeneration and Recovery of Spent Refinery Catalyst Using Adapted Microorganisms
  Author(s): Olalere Olusegun Abayomi, Olunusi Samuel Olugbenga, Agboola John Olatunji, Mohamed Farag Twibi and Saber Abdulhamid AlftessiOlalere Olusegun Abayomi, Olunusi Samuel Olugbenga, Agboola John Olatunji, Mohamed Farag Twibi and Saber Abdulhamid Alftessi
  
  The regeneration of spent catalyst is either through chemical leaching or bioleaching techniques; with the latter being an alternative to the traditional extraction methods involving the use of series of adapted microorganisms. The bioleaching process is therefore the best alternative due to cost effectiveness, simple in operation and higher recovery of heavy metals. This research work adapted various microorganisms (three bacteria and one fungus) both singly and in mixture into a digested solution of a spent refinery catalyst. The activity order of the adapted microorganisms was described in this order; Pseudomonas flourescens>Bacillus coagulans>Bacillus megaterium or Pseudomonas putida>Fusarium flocciferum. The Pb-ion showed a greater resistance to bioleaching while Mn ion was easily bioleached by the adapted microorganisms. From the results obtained, the a.. View More»
  DOI: 10.4172/2090-4568.1000158

  Abstract PDF