Abstract
Sonolysis-assisted photocatalytic hydrogen recovery from sulphide wastewater was conducted using Carbon nanotube (CNT) deposited ZnS/Fe2O3 core-shell particles. The synthesized photocatalyst was characterized for XRD, UV-DRS, SEM, EDX, HRTEM, FTIR, PL and XPS. Effect of catalyst dosage, photolytic volume and sacrificial agent (SO32-) concentrations were conducted for maximum hydrogen production. After optimization studies, it is observed that the maximum amount of hydrogen yield was obtained with 0.2M concentrations of sacrificial agent, 0.05g/L of catalyst dosage and 150mL of liquid depth. The prepared photocatalyst is found to be stable up to 6 cycles. Sonophotocatalysis shows better performance than sonolysis and photocatalysis. 6250 μmol/h is the highest H2 yield recovered from the sulphide containing wastewater collected from the sewage treatment plant.
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