The massive emission of low-concentration coal mine methane (CMM) has resulted in the ineffective utilization of a large amount of energy methane and caused environmental pollution. The gas mixture used in the study consisted of methane (CH4) 12% and nitrogen (N2) 88%. The adsorbent was coconut activated carbon. https://www.bekindtopets.com/limited-deal-Neutral-Checkered-Galaxy-Note-10-Pro-Case-p51042-best-super/