Catalytic oxidizers are the first choice for emission control in coffee roasting plants. The low operating temperature of the catalyst at 370 – 430° C enables significant savings on operating costs compared to thermal oxidizers typically running at 760 – 870° C: Catalytic oxidizers use less than 50% of the natural gas and the consumption of electricity is reduced by 30% respectively. Both NOX and CO, a problem with most thermal reactors, are reduced to near zero. By using less natural gas a plant will greatly lower its overall greenhouse gas emissions (GHG) by reducing the total carbon dioxide (CO2) formed during combustion.