title: Optimization of operating parameters for gas-phase photocatalytic splitting of H2S by novel vermiculate packed tubular reactor.
abstract: Hydrogen production by gas-phase photocatalytic splitting of Hydrogen Sulphide (H2S) was investigated on four semiconductor photocatalysts including CuGa1.6Fe0.4O2, ZnFe2O3, (CdS + ZnS)/Fe2O3 and Ce/TiO2. The CdS and ZnS coated core shell particles (CdS + ZnS)/Fe2O3 shows the highest rate of hydrogen (H2) production under optimized conditions. Packed bed tubular reactor was used to study the performance of prepared photocatalysts. Selection of the best packing material is a key for maximum removal efficiency. Cheap, lightweight and easily adsorbing vermiculate materials were used as a novel packing material and were found to be effective in splitting H2S. Effect of various operating parameters like flow rate, sulphide concentration, catalyst dosage, light irradiation were tested and optimized for maximum H2 conversion of 92% from industrial waste H2S.
authors: Hindustan Institute of Technology and Science (HITS), Padur, Kelambakkam, Chennai 603103, Tamilnadu, India. Electronic address: preethi_enviro@hotmail.com.
authors: V
authors: V
authors: Preethi
authors: Centre for Environmental Studies, Anna University, Chennai 600 025, Tamilnadu, India.
authors: S
authors: S
authors: Kanmani
mesh_terms: D000393:Air Pollutants / Q000737:chemistry*; D000397:Air Pollution / Q000517:prevention & control*; D006801:Humans; D006862:Hydrogen Sulfide / Q000737:chemistry*; D010084:Oxidation-Reduction; D055668:Photochemical Processes
chemical_list: D000393:Air Pollutants; D006862:Hydrogen Sulfide
keywords: Gas-phase; Hydrogen; Hydrogen sulphide splitting; Photocatalysis; Vermiculate material