A method and system for separating hydrogen and sulfur from hydrogen sulfide(H.sub.2 S) gas being produced from oil and gas waste streams. The hydrogen sulfide(H.sub.2 S) gas is first passed into a scrubber and filtration unit where it encounters polysulfide solution. Elemental sulfur is freed when the H.sub.2 S interacts with the solution, the sulfur is filtered through a porous media such as a ceramic frit, and continues to a stripper unit where the excess H.sub.2 S is removed from the sulfide solution. The excess H.sub.2 S returns to the scrubber and filtration unit, while the sulfide solution passes into a photoreactor containing a semiconductor photocatalyst such as Cadmium Sulfide(CdS), Platinized Cadmium Sulfide, Pt-CdS, Zinc Sulfide, ZnS, Zinc Ferrate, ZnFe.sub.2 O.sub.4, Indium Sulfide, In.sub.2 S.sub.3, along with a 450-500 nm light source.
US 6,248,218 B1
Application Serial Number
Assignee at Issuance
Florida Solar Energy Center (FSEC)
Assignee at Filing
Nonprovisional Application Record
Linkous, Clovis and Muradov, Nazim, "Closed Cycle Photocatlytic Process for Decomposition of Hydrogen Sulfide to its Constituent Elements" (2001). UCF Patents. 672.