Adsorption of Hydrogen Sulfide (H2S) by BaFe2O4-activated Clay Nanocomposite: Preparation and Evaluation

In this study, BaFe2O4–activated clay nanocomposites were successfully synthesized via mechanosynthesis technique. Structural analysis of the products confirmed the nanoscale formation of nanocomposites. This study focused on adsorption of hydrogen sulfide (H2S) which is a poisonous gas and can be released from sewage sludge. In the past years, a growing attention in the usage of adsorptive desulfurization in industrial applications has been observed due to its many benefits such as low cost. Nanocomposites were characterized by scanning electron microscopy (SEM), energy dispersive X-ray (EDS) analysis, Fourier transform infrared (FTIR), X-ray powder diffraction (XRD). Results showed different loading of barium ferrite in nanocomposite is important for adsorption rate. Furthermore, adsorption rate of hydrogen sulfide was improved by increasing BaFe2O4- activated clay concentration which was confirmed by statistical results. The highest average of removal efficiency was 92.79±0.90 in the concentration of 300 g.L-1and loading 6%. We could recycle BaFe2O4–activated clay nanocomposite, 3 times without a significant decrease in activity.