Performance of four various shapes of photocatalytic reactors with respect to hydrogen and sulphur recovery from sulphide containing wastestreams

A more economically viable way of producing hydrogen from sulphide wastewater is under active investigation by many researchers, to convert solar energy into chemical energy with higher efficiency. In this paper the photocatalytic hydrogen production from sulphide waste stream was compared using four different configuration of liquid-phase photocatalytic hydrogen production systems, viz., cylindrical inner irradiated (LR1(inner)), and cylindrical outer irradiated (LR1(outer)), tubular outer irradiated (LR2) and trapezoidal outer irradiated (LR3) photocatalytic reactors. CdS and ZnS coated iron oxide core shell particles (CdS + ZnS)/Fe2O3) was used as novel photocatalyst to study the reactor performance. Results are presented and discussed to evaluate how the system parameters affect the hydrogen production rate. The hydrogen production for the above reactors were found to be 7857, 938, 580 and 1116 mu mol/h with the quantum yield of 21%, 6%, 2.5% and 7.5% respectively. (C) 2016 Elsevier Ltd. All rights reserved.