Furthermore, the terms “comprising,” “including,” “having,” and the like, as used with respect to embodiments of the present disclosure, are synonymous. Global Reaction Scheme for Partial Oxidation of Pure H2S and H2S + CH4 Mixture in ... –Graphene–molybdenum oxide nano composite for selective oxidation of hydrogen sulfide into elemental sulfur. 13. Copolymers of Monomer D and Monomer H can achieve combinations of selectivity and permeance that are unattainable using commercially available perfluoropolymer materials (Table 3 and Table 4). For example, the second permeate-in-series permeate stream 452 has only 200-600 ppm hydrogen sulfide if membranes with carbon dioxide-hydrogen sulfide selectivity of at least 20 are used in this configuration. In FIG. The membrane modules can also be configured to use a sweep gas on the permeate side of the membrane to improve separation. This suggests that Copolymer 3 is more size-sieving than the most selective of the commercial perfluoropolymers, Cytop®, and can be used in a membrane with relatively high permeance. Two kinetic steps where identified. Second membrane-stage retentate stream 471 is enriched in hydrogen sulfide and can be sent to a sulfur recovery unit. In this configuration, the first retentate-in-series permeate stream 422 contains about 0.1-0.3 mol % hydrogen sulfide. Polyamine/alkali salt blends for carbon dioxide removal from gas streams, Method and device for synchronously removing H2S, CO2 and SO2 from sulfur-containing mixed gas, Method for natural gas desulphurization and resource utilization of desulphurization waste solution, A kind of Acidic Gas Treating technique and system, A kind of utilization sour gas produces the method and device of solid sodium bicarbonate, A kind of utilization sour gas produces the method and device of sodium acid carbonate, A kind of method and device that sodium acid carbonate is prepared by sour gas, A kind of method and device that sodium acid carbonate and hydrogen sulfide gas are produced using sour gas, A kind of process and device for producing NaHS, METHOD FOR REMOVING SOx FROM GAS WITH COMPOUND ALCOHOL-AMINE SOLUTION, Method for the processing of a carbon dioxide-rich gas to be freed from sulphur constituents, Process and amine-solvent absorbent for removing acidic gases from gaseous mixtures. The process of FIG. 4b, a feed-gas containing 2 mol % hydrogen sulfide and 98 mol % carbon dioxide was fed to a process having the configuration shown in FIG. The process of claim 1, wherein the membrane separation unit has a single-pass membrane stage configuration. TABLE 10 Two-stage retentate-in-series configuration performance: H2S recovery using a feed-gas stream containing 10 mol % H2S H2S in first retentate-in- Membrane Theoretical series permeate Recovered area (m2) compressor stream 422 H2S MS MS power Selectivity (mol %) (%)a 420 430 (kW) Fifty mole percent H2S in second retentate-in-series retentate stream 5 3.21 73 51 28 45 10 0.91 93 47 68 119 20 0.44 96 46 61 105 30 0.29 98 46 59 101 Ninety mole percent H2S in second retentate-in-series retentate stream 5 3.67 66 56 70 100 10 0.94 92 52 114 175 20 0.44 96 51 93 134 30 0.29 97 51 87 123 MS, membrane stage aPercent H2S from the feed-gas stream that is recovered in the second retentate-in-series retentate stream. Chem., 156 (2013), pp. TABLE 7 Two-stage permeate-in-series configuration performance: H2S recovery using a feed-gas stream containing 2 mol % H2S H2S in second permeate-in- Membrane Theoretical series permeate Recovered area (m2) compressor stream 452 H2S MS MS power Selectivity (mol %) (%)a 440 450 (kW) Twenty mole percent H2S in first permeate-in-series retentate stream 5 0.30 86 89 49 177 10 0.10 95 66 48 146 20 0.035 98 58 48 128 30 0.018 99 55 48 122 Fifty mole percent H2S in first permeate-in-series retentate stream 5 0.34 83 131 52 259 10 0.13 94 83 52 179 20 0.044 98 68 51 145 30 0.022 99 63 51 136 Ninety mole percent H2S in first permeate-in-series retentate stream 5 0.39 81 251 53 527 10 0.16 92 99 53 242 20 0.057 97 83 52 170 30 0.031 98 74 52 152 aPercent H2S from the feed-gas stream that is recovered in the second retentate-in-series retentate stream.