alexa Abstract | A Bioleaching Regeneration and Recovery of Spent Refinery Catalyst Using Adapted Microorganisms
ISSN: 2090-4568

Journal of Advanced Chemical Engineering
Open Access

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Case Report Open Access


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 affinity of some of these cultured microorganism strains to the heavy metals was attained with Fusarium flocciferum showing affinity for Mn only, Bacillus megaterium or Pseudomonas putida for Mn and Cd-ions, Bacillus coagulans for Pb and partially for Ni- ion, while Pseudomonas flourescens for Pb and Cd-ions. Hence the adaptation of various microorganisms into a digested solution of a spent refinery catalyst already poisoned with the heavy metals is explicitly carried out to regenerate the catalyst for a possible reuse which is optimal in saving the cost of production.

To read the full article Peer-reviewed Article PDF image

Author(s): Olalere Olusegun Abayomi, Olunusi Samuel Olugbenga, Agboola John Olatunji, Mohamed Farag Twibi1 and Saber Abdulhamid Alftessi


Regeneration, Spent catalyst, Heavy metals, Bioleaching, Adapted microorganisms, Pseudomonas flourescens, Bacillus coagulans, Bacillus megaterium or Pseudomonas putida, Fusarium flocciferum, Biochemical Engineering, Biochemical Thermodynamics, Catalyst, Chemical Engineering, Chemical Engineering in Food Industry

Share This Page

Additional Info

Loading Please wait..
Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version