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The opportunity for heat recovery and greenhouse gas elimination from dilute methane emissions from coal mine ventilation air, oil and gas industries and landfill by using a Catalytic Flow Reversal Reactor (CFRR) technology is discussed. The CFRR technology has been experimentally proven to eliminate methane as dilute as 0.1 \% v/v in air, with no requirement for external heat. Indeed, for concentrations above 0.3 \%v/v, the methane heat of oxidation can be recovered with efficiency up to 90\% as 800oC hot air. Ut...