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On the Utilization of Modified Red Mud in Dimethyl Disulfide and Methyl Mercaptan Emission Abatement

Author

Listed:
  • Sanna Päivärinta-Antikainen

    (Environmental and Chemical Engineering, Faculty of Technology, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland)

  • Satu Ojala

    (Environmental and Chemical Engineering, Faculty of Technology, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland)

  • Satu Pitkäaho

    (Environmental and Chemical Engineering, Faculty of Technology, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland)

  • Lenka Matějová

    (Institute of Environmental Technology, CEET, VŠB-Technical University of Ostrava, 17. Listopadu 15/2172, Poruba, 708 00 Ostrava, Czech Republic
    Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, v.v.i., Rozvojová 135, Suchdol, 165 02 Praha, Czech Republic)

  • Riitta L. Keiski

    (Environmental and Chemical Engineering, Faculty of Technology, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland)

Abstract

In this paper, a novel application of industrial waste, namely red mud (RM), in the abatement of two malodorous and harmful sulfur compounds, dimethyl disulfide (DMDS) and methyl mercaptan (MM), is presented. The effects of calcination and activations with hydrochloric acid or a mixture of hydrochloric and orthophosphoric acid on the properties and performance of RM are compared using laboratory-scale experiments. The RM-based materials were characterized by XRF, XRD, FE-SEM, N 2 -physisorption, TGA/DTA, and FTIR analyses. RM exhibits very promising catalytic properties in the abatement of both DMDS and MM. The hydrochloric acid-activated RM was the most active in both cases, which was explained by its rather high specific surface area (144 m 2 g −1 ), higher contents of Fe 2 O 3 and TiO 2, as well as lower content of phosphorus. For both DMDS and MM, the main oxidation products were sulfur dioxide, carbon monoxide, and carbon dioxide. DMDS was observed as a reaction intermediate in MM oxidation. While the final conversions of DMDS and MM were high, the oxidation was not complete, indicated by the formation of carbon monoxide. Nevertheless, the modified RM appears as a very interesting alternative to the existing DMDS and MM abatement catalysts.

Suggested Citation

  • Sanna Päivärinta-Antikainen & Satu Ojala & Satu Pitkäaho & Lenka Matějová & Riitta L. Keiski, 2023. "On the Utilization of Modified Red Mud in Dimethyl Disulfide and Methyl Mercaptan Emission Abatement," Resources, MDPI, vol. 12(1), pages 1-22, January.
    • Handle: RePEc:gam:jresou:v:12:y:2023:i:1:p:9-:d:1023893
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    References listed on IDEAS

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    1. Valentina Dentoni & Battista Grosso & Giorgio Massacci, 2014. "Environmental Sustainability of the Alumina Industry in Western Europe," Sustainability, MDPI, vol. 6(12), pages 1-17, December.
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