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Employing CdS nanoparticles as an adsorbent for the removal of different dosages of hexavalent Cr (VI) from aqueous solution

Velusamy, Sasireka; Roy, Anurag; Sundaram, Senthilarasu; Mallick, Tapas K

Authors

Sasireka Velusamy

Anurag Roy

Tapas K Mallick



Abstract

The discharge of chromium effluent from various industries becomes a severe threat to the environment, creating a risk to human health and environmental aspects. In this study, Cr (VI) removal from aqueous solution by adsorption was investigated using commercially available CdS at different concentrations to consider an industrial-level large-scale application. Adsorption efficiency depends on a few parameters: pH, adsorbent dosage, initial concentration of Cr (VI) solution, temperature and contact time. For understanding the adsorption process, adsorption kinetics and adsorption Isotherm studies were applied to check the best fit mechanism of the adsorption process. The pseudo-second-order kinetics followed by the Langmuir adsorption isotherm model is the most fitted model for removing chromium using CdS. This study signifies another toxic compound, CdS, that can effectively convert Cr (VI) toxic to Cr (III) non-toxic state.

Journal Article Type Article
Acceptance Date Dec 24, 2021
Online Publication Date Dec 29, 2021
Publication Date 2022-03
Deposit Date Mar 10, 2023
Journal Materials Letters
Print ISSN 0167-577X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 311
Article Number 131602
DOI https://doi.org/10.1016/j.matlet.2021.131602