Development and Study of Adsorbents Based on Iron–Manganese Oxides for Desulfurization of Gas Emissions

Abstract

Abstract The results of studying the samples of efficient sorbents based on domestic natural raw materials, namely, ferromanganese nodules (FMNs) are presented. The use of these sorbents has significant potential for solving the pressing problem of environmental protection, such as the purification of gas flows from toxic sulfur compounds. The influence of the calcination temperature of sorbents on their physicochemical and sorption characteristics is studied. It is shown that the calcination temperature of a sorbent significantly affects its sorption capacity with respect to hydrogen sulfide, and optimal sorption characteristics are exhibited by the sorbent calcined at 300°C. SEM elemental mapping and DRIFT study results for spent samples allowed us to propose a temperature-dependent pathway of hydrogen sulfide sorption on the synthesized sorbents.