biostudies-literatureUnknown10(9)Xie FVentilation air methane from coal mining is characterized by large flux and ultralow concentration, which is the largest source of methane emissions in coal mines. This study proposes a fluidized catalytic oxidation process to treat methane using cost-effective natural ore catalysts. Experiments were conducted in a pilot-scale fluidized bed reactor. The results indicate that the methane conversion rate reached 90% at 543 °C, while further temperature increment showed a minor effect on the conversion rate. Within the tested range, the effects of the bed inventory and catalyst particle size on efficiency were insignificant. In the stability test, methane conversion decreased from 97.4 to 90% in the initial 22 h. It was found that ∼35.6 wt % of the catalysts was blown out of the reactor durinACS omega9474-9483https://www.ebi.ac.uk/biostudies/studies/S-EPMC11904670biostudies-literatureFluidized Catalytic Oxidation of Ultralow Concentration Methane: A Pilot-Scale Study.PMC11904670Zhang WLi GXie FFan YDeng QYou CWang HZhou XfalseFluidized Catalytic Oxidation of Ultralow Concentration Methane: A Pilot-Scale Study.Ventilation air methane from coal mining is characterized by large flux and ultralow concentration, which is the largest source of methane emissions in coal mines. This study proposes a fluidized catalytic oxidation process to treat methane using cost-effective natural ore catalysts. Experiments were conducted in a pilot-scale fluidized bed reactor. The results indicate that the methane conversion rate reached 90% at 543 °C, while further temperature increment showed a minor effect on the conversion rate. Within the tested range, the effects of the bed inventory and catalyst particle size on efficiency were insignificant. In the stability test, methane conversion decreased from 97.4 to 90% in the initial 22 h. It was found that ∼35.6 wt % of the catalysts was blown out of the reactor durin2025-01-01T00:00:00Z2025 Mar2025-04-26T03:26:44.792Z2025-04-06T10:46:49.502ZS-EPMC119046704009280010.1021/acsomega.4c10532