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://countryscenesaddleryandpetsuppliers.shop/product-category/pommel-sack/