TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Process: The oxygen is provided by introduction of air. The H2S is provided as a raw acid gas from the production of petrochemical products, where the gas comprises H2S and carbon dioxide (CO2), and optionally, gaseous hydrocarbons. The water is added, where the product sulfur dioxide is separated from the other gaseous combustion products and unreacted gases. The process further comprises removing the H2SO4 from the process. The step (b) is operated at 125 degrees F (52 degrees C). Preferred Components: The sulfur is comprised in a combustible and/or carbon-containing compound. The combustible and/or carbon-containing compound or compounds is: one or more of hard coal, soft coal or coke products; or a sulfur-laden heavy oil or bitumen.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Process: The electrical current is applied using a voltage below 0.5 volts. The SO2 separation unit is configured to operate at 100 degrees F (38 degrees C). The regeneration unit is configured to operate at 300 degrees F (149 degrees C). The system further comprises: an electrical generator driven by at least a portion of the steam stream and configured to provide electricity to the electrolytic cell; a water inlet stream configured to provide water to the electrolytic cell; a regeneration unit operatively connected to the SO2 separation unit and configured to produce at least one water stream, where at least a portion of the steam stream is supplied to the regeneration unit and at least a portion of the water stream is supplied to the boiler unit; and a H2SO4 purge stream configured to take off at least H2SO4 from the SO2 separation unit and a H2SO4 exit stream configured to remove H2SO4 from the electrolytic cell. Preferred Components: The SO2 separation unit is a solvent based SO2 separation unit. EXAMPLE - Acid gas containing hydrogen sulfide (250 kgmols/hour), carbon dioxide (705 kgmols/hour), water (45 kgmol/hour) in the form of moisture, air containing oxygen (426.8 kgmols/hour), nitrogen (1740.2 kgmols/hour), and water (33 kgmols/hour) in the form of moisture were introduced into combustion chamber. After combustion, a stream comprised the nitrogen and carbon dioxide in the same amounts as in the feed gas (unreacted), with sulfur dioxide at 245 kgmols/hour, sulfur trioxide (5 kgmols/hour), water (328 kgmols/hour), and oxygen (49.3 kgmols/hour). Water was condensed from the combusted stream to provide water reagent. Steam containing water vapor (3116.2 kgmols/hour) was withdrawn in stream, and a gaseous, sulfur dioxide-containing stream, containing additionally the carbon dioxide, oxygen, nitrogen, water vapor, and sulfur trioxide of stream exits the boiler unit. The stream was maintained at temperatures, to avoid condensation of corrosive sulfuric acid (H2SO4) at 600 degrees F. Then, the steam was quenched by contacting with liquid water in a device to reduce the temperature of 100-150 degrees F. Reactive sulfur trioxide and H2SO4 was dissolved in the aqueous quench stream. A small amount of this stream was purged from the system as a weak solution of H2SO4 in purge stream. The cooled, H2SO4 -free gas stream was then provided for separation of sulfur dioxide was removed by absorbing it into a sulfur dioxide-selective solvent in a gas-liquid contacting device. The exit stream, cooled to 100-150 degrees F, comprised sulfur dioxide (240.6 kgmols/hour) and flowed from the regeneration unit at 17-25 psia to the electrolytic cell. A portion of the steam (1992.2 kgmols/hour) in exit stream was diverted in stream to the regeneration unit to provide heat. The excess steam in an amount of water (261.8 kg mols/hour) was removed to provision to the regeneration unit. A separate stream took off H2SO4 (5 kgmols/hour), sulfur dioxide (3.4 kgmols/hour) and water (25 kgmols/hour) from the scrubbing unit. Unreacted and by-product gases were vented from the separation unit and removed in stream, this stream thus comprised carbon dioxide residual oxygen, and nitrogen (1 kgmol/hour). Electricity was applied to the sulfurous acid solution in the electrolytic cell from the electrical generator. Water (264.7 kgmols/hour) was added to the electrolytic cell in the stream with the sulfur dioxide and electrolyzed to give hydrogen (240 kgmols/hour) and H2SO4 (240 kgmol/hour).