A review on sensitivity of operating parameters on biogas catalysts for selective oxidation of Hydrogen Sulfide to elemental sulfur

Phuet Prasertcharoensuk, Athitaya Promtongkaew, Makamas Tawatchai, Victor Marquez, Bunjerd Jongsomjit, Muhammad Tahir, Supareak Praserthdam, Piyasan Praserthdam

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Hydrogen sulfide (H2S) is a critical problem for biogas applications, such as electricity and heat generation, or the production of different chemical compounds, due to corrosion and toxic effluent gases. The selective catalytic oxidation of H2S to S is the most promising way to eliminate H2S from biogas due to the lack of effluents, therefore can be considered a green technology. The most extensively used catalysts for H2S selective oxidation can be classified in two groups: metal oxide-based catalysts, including vanadium and iron oxides, and carbon-based catalysts. Numerous studies have been devoted to studying their different catalytic performances. For industrial applications, the most suitable catalysts should be less sensitive to the operating parameters like the temperature, O2/H2S ratio, and H2O content. More specifically, for metal oxides and carbon-based catalysts, the temperature and O2/H2S ratio have a similar effect on the conversion and selectivity, but carbon-based catalysts are less sensitive to water in all operating conditions.

Original languageEnglish
Article number134579
JournalChemosphere
Volume301
DOIs
Publication statusPublished - Aug 2022

Keywords

  • Carbon-based catalyst
  • Iron oxide-based catalyst
  • Operating parameters
  • Selective oxidation of HS
  • Vanadium oxide-based catalyst

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • General Chemistry
  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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