TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Methods: The methane and nitrogen are sorbed by the sorption medium during the first step. The method includes regenerating the sorption medium subsequent to the second step. The method includes flowing another part of the fluid mixture into a second micro channel separator, desorbing the methane or nitrogen from the second sorption medium, and removing the desorbed methane or nitrogen from the second micro channel separator. The first step is conducted simultaneously with the second desorbing step. The first desorbing step is conducted simultaneously with the second flowing of methane step.Preferred Components: The micro channel separator also comprises header (104). The header is multiple entry header. The entry header comprises fluid mixture section, purging fluid section, and flush fluid section. The fluid mixture flows from the fluid mixture section into the process micro channels. A purging fluid flows from the purging fluid section into the process micro channels. The flush fluid flows from the fluid flush section into the process micro channels. The process micro channel is at first average sorbent temperature during the first step and a second average sorbent temperature during the second step. The process micro channels are heated using resistance heater. The sorption medium comprises metal structure functioning as a resistance heater. The process micro channels exchange heat with heat exchange channels. The heat exchange channels comprise micro channels. The fluid flowing through the process micro channels flows in a first direction. A heat exchange fluid flows through the heat exchange channels in a second direction. The second direction is cross current, co-current, or counter current relative to the first direction. The process micro channels are steel, aluminum, titanium, nickel, platinum, rhodium, copper, chromium, brass, their alloy, polymer, ceramics, glass, composite containing polymer and fiberglass, quartz, and/or silicon. The sorption medium in is the form of flow-by or through sorption medium. The process micro channels have interior surfaces. The sorption medium is coated on the interior surfaces of the process micro channels. The sorption medium is in the form of particle solids. The sorption medium are mixed with heat conductive particulate solids to increase the thermal conductivity of the sorption medium. The sorption medium is in the form of foam, felt, wad, gauze, honeycomb, and/or fin assembly. The foam, felt, wad, gauze, or fin assembly functions as resistance heater. The sorption medium has serpentine configuration. The sorption medium has adjacent gaps in flow-by structure, foam and fin assembly form. The sorption medium can also be a washcoat on an inserted substrate or gauze parallel to the flow direction with corresponding gap for flow. The sorption medium occupies % of the cross sectional area of the cross section(s) of the process micro channel. The sorption medium comprises metal-organic complex, copper metal complex, zeolite, activated carbon, micro porous carbon powder, porous carbon foam, and/or carbon nanotubes. The sorption medium comprises micro porous carbon powder. The sorption medium is derived from iron (II), cobalt (II), copper (I), vanadium (II) or (IV), manganese (II) or (III), chromium (II), silver (I), rhodium (II) or (III), uranium (IV), ruthenium (II) or (IV), titanium (III), chromium (IV), bismuth (III), nickel (II), tungsten (V) or (IV), and/or molybdenum (II)-(VI). The sorption medium is derived from dipyridyl, ; 2,6-(1-(2-imidazol-4-yl ethylimino) ethyl pyridine); cyclen; cyclam; Schiff base ligand; acetyl acetonate; acetyl acetonate oligomer; acetyl acetonate polymer; carboxylate; bipyridyl; bipyridyl oligomer; bipyridyl polymer; porphyrin; porphyrin oligomer; porphyrin polymers; corin; corin polymers; corin oligomer; protein; 8-hydroxy quinoline; 8-hydroxy quinoline polymers; 8-hydroxy quinoline oligomer; ethyl cysteinate; ethyl cysteinate polymers; ethyl cysteinate oligomers; N-alkyl alkanohydroxamic acid; dimethyl glyoxime; and/or sym-diethylethylenediamine. The sorption medium comprises silica gel, foamed copper, sintered stainless steel, fiber, alumina, poly(methyl methacrylate), polysulfonate, poly(tetrafluoroethylene), iron, nickel sponge, nylon, polyvinylidene difluoride, polypropylene, polyethylene, polyethylene ethyl ketone, polyvinyl alcohol, polyvinyl acetate, polyacrylate, polymethyl methacrylate, polystyrene, polyphenylene sulfide, polysulfone, and/or polybutylene. At least 5 vol.% of methane or nitrogen sorbed during the first step is desorbed during the second step. The fluid mixture prior to the first step is methane, nitrogen, carbon dioxide, oxygen, and water vapor. The concentration of methane in fluid mixture prior to the first step is 1-98 vol.%. The fluid mixture comprises methane-containing composition derived from coal mine or landfill. At least 50 vol.% of methane in the fluid mixture entering the micro channel separator is recovered. The micro channel separator includes micro channel separator core (102) for housing the process micro channels. The flow of fluid mixture through the process micro channels is at least 20 standard cubic meters per hour per cubic meter of volume of the micro channel separator core. The recovery of methane or nitrogen from the fluid mixture is at least 50 vol.% of methane or nitrogen in the fluid mixture entering the micro channel separator. The tail gas is produced during the first step. The tail gas is used as source of energy. The portion(s) of the tail gas is combusted within the micro channel. The process micro channels are heated during the first and/or second steps by heat exchange fluid flowing through heat exchange channels. The heat exchange fluid is heated in part(s) by combustion of tail gas. A purging flow through the process micro channels to remove non-sorbed parts of the fluid mixture from the micro channel separator during the first step. The temperature and/or pressure within the process micro channels are increased to remove non-sorbed parts of the fluid mixture form the micro channel separator during the first step. A flush fluid flows through the process micro channel to remove desorbed methane or nitrogen from the micro channel separator during the second step. The process micro channels are heated during the first step and/or second step. A compressor is used to increase the pressure of the fluid mixture and compressor producing heat. The heat from compressor is used as energy source to provide part(s) of the heat for heating the process micro channels. The sub-quality methane gas also comprises water vapor. The water vapor is separated from the sub-quality methane gas prior to the first step. The sub-quality methane gas also comprises oxygen and/or carbon dioxide. The oxygen and/or carbon dioxide is separated from the sub quality methane gas subsequent to the second step.Preferred Parameters: The first temperature is lower or greater than the second temperature. The time to complete the first step is at most 10 seconds. The sorption medium is at a first average sorbent temperature during the first step. The sorption medium is at a second average sorbent temperature during the first step. The difference between the two temperatures is 1-200 degrees C. The temperature and/or pressure in the process micro channels are increased to remove desorbed methane or nitrogen from the micro channel separator. The temperate in process micro channels during the first step is 40 degrees C. The temperature in the process micro channel during the second step is 60 degrees C. The pressure in the process micro channels is 6-8 atmosphere gauge pressure.