Desulphurization Capabilities of Indigenous Bacteria Isolates for Enhanced Sulphur Removal

Articles in Press

Document Type : Research Paper

Authors

1 Department Of Chemical Engineering, KNUST, Kumasi-Ghana

2 Noguchi Memorial Institute for Medical Research, University of Ghana, Legon - Ghana

3 Department of Chemical Engineering, KNUST, Kumasi-Ghana

4 Kumasi Centre for Collaborative Research in Tropical Medicine, KNUST-Kumasi, Ghana

Abstract

Desulphurisation is an essential part of refinery operations due to the numerous effects of sulphur on refinery equipment and fuel product quality. Biocatalytic desulphurisation methods potentially promote energy savings due to the mild temperature, and low-pressure operating conditions involved. Furthermore, the biological process results in a negligible level of undesirable products and emissions without lowering the calorific value of the fuel. In this study, indigenous microorganisms that thrive in hydrocarbon environments were isolated, characterised, and identified from waste oil dump sites at major garages in the Kumasi Metropolis, Ghana, and used to desulphurise crude oil. Preliminary screening resulted in 132 microbial isolates with 26 most potent isolates selected for the final identification and their use for desulphurisation. The isolates identified included Stenotrophomonas maltophilia, Pseudomonas aeruginosa, Alcaligenes faecalis, Enterococcus faecalis, Xanthomonas maltophilia, Pseudomonas maltophilia, and Pseudomonas putida. The highest level of desulphurisation was 73.5% at 40℃ by Stenotrophomonas maltophilia. An isolate of Enterococcus faecalis, which has not been widely explored for its sulphur removal potential could remove 61% sulphur from crude oil and is worth further research.

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Main Subjects

Journal of Chemical and Petroleum Engineering

Articles in Press, Accepted Manuscript
Available Online from 16 June 2024

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History

  • Receive Date: 03 January 2024
  • Revise Date: 08 May 2024
  • Accept Date: 11 May 2024

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