Anaerobic digestion produces biogas which usually contains 60-70% of methane (CH4). 30-40% of carbon-di-oxide (CO2). and 10-2. 000 ppm hydrogen sulfide (H2S). https://www.roneverhart.com/BenQ-MOBIUZ-EX2710U-27-4K-UHD-3840-x-2160-144-Hz-Gaming-Monitor-1ms-HDMI-DisplayPort-Built-in-Speakers/