Päivärinta-Antikainen S, Ojala S, Pitkäaho S, Matějová L, Keiski RL. On the Utilization of Modified Red Mud in Dimethyl Disulfide and Methyl Mercaptan Emission Abatement. Resources. 2023; 12(1):9. https://doi.org/10.3390/resources12010009
On the utilization of modified red mud in dimethyl disulfide and methyl mercaptan emission abatement
|Author:||Päivärinta-Antikainen, Sanna1; Ojala, Satu1; Pitkäaho, Satu1;|
1Environmental and Chemical Engineering, Faculty of Technology, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland
2Institute of Environmental Technology, CEET, VŠB-Technical University of Ostrava, 17. Listopadu 15/2172, Poruba, 708 00 Ostrava, Czech Republic
|Online Access:||PDF Full Text (PDF, 9.9 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2023081696908
Multidisciplinary Digital Publishing Institute,
|Publish Date:|| 2023-08-16
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, N₂-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 m² g⁻¹), higher contents of Fe₂O₃ and TiO₂, 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.
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
215 Chemical engineering
218 Environmental engineering
This research was funded by the Graduate School in Chemical Engineering (Academy of Finland), Emil Aaltonen Foundation, the North Ostrobothnia Regional Fund of the Finnish Cultural Foundation, and the Council of Oulu Region from the European Regional Development Fund (A32164). Lenka Matějová acknowledges the projects “COOPERATION” (No. CZ.02.1.01./0.0/0.0/17_049/0008419) and “Institute of Environmental Technology—Excellent Research” (No. CZ.02.1.01/0.0/0.0/16_019/0000853) supported from ERDF.
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).