TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The contaminant comprises carbon dioxide (CO2), hydrogen sulfide (H2S), water (H2O), heavy hydrocarbons, volatile organic compounds (VOCs) and/or mercaptans. The first portion of waste gas stream comprises CO2 (98 vol.%). The second portion of waste gas stream comprises nitrogen, hydrogen, methane and/or H2O.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Vessel: The at least one vessel is configured to deliver waste gas stream through the gas inlet or through the gas outlet. When the vessel further comprises rods, each of the at least two major flow channels is formed between and along the major axis, of the rods and the rods are spaced equi-distantly apart, providing the major flow channels with uniform volume. When the adsorbent vessel further comprises a second gas outlet (420) intermediate the gas inlet and the first gas outlet, the minor flow channel is formed by flow channels that intersect the at least two major flow channels and which place the gas inlet and second gas outlet in fluid communication. The fractionation vessel further comprises a manifold for cycling the natural gas mixture through sequential releasing and desorbing stages in combined cycle of less than one minute, where the manifold comprises valving interfaces. The fractionation vessel further comprises a second gas outlet intermediate the gas inlet and first gas outlet for releasing portion of waste gas stream when the vessel is desorbed. Preferred Components: The minor flow channel is formed by stepped surfaces along the respective rods. The minor flow channel is transverse to at least two major flow channels. The adsorbent material further comprises annular ring (405) along an inner diameter of vessel, and monolithic body having longitudinal through-openings forming the at least two major flow channels. The valving interfaces comprise rotary valves and/or non-rotary valves. The valving interfaces cooperate with other fractionation vessels to form pressure swing adsorption system comprising at least one service bed providing adsorption, at least one bed in regeneration undergoing pressure reduction, and at least one regenerated bed held in reserve for use in adsorption system when the service bed becomes saturated. The second gas outlet is orthogonal to major flow channels. The at least two minor flow channels is formed by stepped surfaces and/or by spiral surfaces along respective rods. The adsorbent material comprises outer surface partially coated with ionic fluid to enhance adsorptive properties of adsorbent material.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The process further involves selecting an ionic fluid as absorbent to enhance adsorptive properties of the adsorbent material; placing the selected ionic fluid onto the stepped surfaces before directing natural gas mixture into gas inlet; and dehydrating the natural gas mixture before directing the natural gas mixture into the gas separating unit. When the at least one adsorbent vessel further comprises a second gas outlet intermediate the gas inlet and the first gas outlet, the step of desorbing the contaminant gases releases a first portion of the waste gas stream from the first gas outlet and a second portion of the waste gas stream from the second gas outlet. The step of desorbing contaminant gases releases a first portion of waste gas stream during first time period, and a second portion of waste gas stream during second time period. When the vessel further comprises rods (415) and each of the rods comprises a bore in it, and a magnetic material (preferably ferromagnetic material) placed along the bore, the method further involves applying magnetic field to rods to create uniform spacing of the rods. The releasing and desorbing steps take place in combined cycle of less than one minute. EXAMPLE - No suitable example given.