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Sulphide removal from petroleum refinery wastewaters by catalytic oxidation
Univ Porto, Fac Engn, LSRE LCM, LSRE Associate Lab, P-4200465 Oporto, Portugal.ORCID iD: 0000-0002-3565-9943
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2012 (English)In: Desalination and Water Treatment, ISSN 1944-3994, Vol. 46, no 1-3, 256-263 p.Article in journal (Refereed) Published
Abstract [en]

The catalytic oxidation of sulphides present in oil refinery wastewaters was investigated in the present study. The wastewaters were obtained from the wastewater treatment plant of the oil refinery in Matosinhos (Portugal), Galp Energia. Air, NaOCl and H2O2 were chosen as oxidants and Fe3+ and Mn2+ as the two catalysts to assess the effective combination of catalyst-oxidant for sulphide removal after oil separation in parallel plate interceptors. Primarily, air (oxygen) was used as the oxidant and the efficiency of two catalysts (Fe3+ and Mn2+) for sulphide removal was evaluated. Experimental data suggested that Fe3+ catalysed sulphide removal in the presence of oxygen was more effective than Mn2+ catalysed reaction. In a subsequent study, oxygen was replaced by NaOCl and H2O2, and the potential of various catalyst-oxidant combinations, NaOCl + [Fe3+], NaOCl + [Mn2+], H2O2 + [Fe3+], H2O2 + [Mn2+], was assessed. The NaOCl + [Fe3+] combination achieved the maximum sulphide oxidation. Pseudo-first-order and pseudo-second-order reaction models were fitted to the kinetic experimental data. The influence of temperature on the kinetic rate was also investigated.

Place, publisher, year, edition, pages
2012. Vol. 46, no 1-3, 256-263 p.
National Category
Earth and Related Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
URN: urn:nbn:se:lnu:diva-20986DOI: 10.1080/19443994.2012.677555OAI: oai:DiVA.org:lnu-20986DiVA: diva2:543042
Available from: 2012-08-06 Created: 2012-08-06 Last updated: 2014-03-27Bibliographically approved

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Bhatnagar, Amit
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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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