Employing CdS nanoparticles as an adsorbent for the removal of different dosages of hexavalent Cr (VI) from aqueous solution
Employing CdS nanoparticles as an adsorbent for the removal of different dosages of hexavalent Cr (VI) from aqueous solution
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DOI：
10.1016/j.matlet.2021.131602
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发表时间：
2021-12
影响因子：
3
通讯作者：
Sasireka Velusamy;Anurag Roy;S. Sundaram;T. Mallick
中科院分区：
文献类型：
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作者：
Sasireka Velusamy;Anurag Roy;S. Sundaram;T. Mallick
来自各个行业的铬废水的排放成为对环境的严重威胁，对人类健康和环境方面造成风险。在这项研究中，Cr（VI）去除水溶液中的吸附进行了研究，使用市售的CdS在不同的浓度，考虑工业级的大规模应用。吸附效率取决于几个参数：pH值，吸附剂剂量，初始浓度的Cr（VI）溶液，温度和接触时间。为了了解吸附过程，吸附动力学和吸附等温线的研究，以检查最适合的吸附过程的机制。准二级动力学其次是朗缪尔吸附等温线模型是最适合的模型去除铬使用硫化镉。这项研究表明，另一种有毒化合物，硫化镉，可以有效地转换铬（VI）有毒的铬（III）无毒状态。
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.