The uptake of Eriochrome Black T dye from Wastewater utilizing synthetized Cadmium Sulfide Nanoparticles

Abstract

Eriochrome Black T dye is an indicator of complex titration as water hardness, as an azo dye, blue in its deprotonated form, and turns red when it forms a complex with metal ions such as Ca, Mg, Cd . .etc. Water contamination is considered one of the most important problems that threaten human life on earth. An efficient method is done to remove EBT from wastewater via using cadmium sulfide Nanoparticles (CdS NPS) that was prepared by using an inexpensive and simple method (chemical precipitation) and was diagnosed this nanomaterial using an X-ray diffractometer (XRD), Transmission electron microscope (TEM), Scanning electron microscope (SEM) and Energy Dispersive X-Ray Analyzer (EDX). TEM characterization results for CdS nanoparticles illustrated that the nanoparticles have a pointy shape-like needles morphology and with miscellaneous sizes, the statistical calculation gives (32) nm as the rate particle size. Through this study, the CdS nanomaterial proved that it has a high ability to adsorb Eriochrome Black-T (EBT) dye under certain conditions where we noticed that the maximum adsorption capacity of this dye by CdS nanoparticles was at Temperature (293) K, (pH = 6) and at a concentration (0.01 g) of the CdS nanomaterial with contact time up to (40) minutes and CdS. Also calculated the thermodynamic functions, (ΔS, ΔH, ΔG), we found that the process was spontaneous and exothermic under the specific condition through The thermodynamic parameters.

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