Development of a method for cadmium ion removal from the water using nano γ-alumina/β-cyclodextrin

• Published in: Toxicology reports 2021-01, Vol.8, p.1877-1882
• Main Authors: Esfanjani, L., Farhadyar, N., Shahbazi, H.R., Fathi, F.
• Format: Article
• Language: English
• Subjects: Adsorption; atomic absorption spectrometry; cadmium; Cd(II) removal; detection limit; FAAS; industrial effluents; Nano γ-alumina/β-Cyclodextrin; nitric acid; Regular; soil; Solid phase extraction; sorbents; toxicity; toxicology
• ISSN: 2214-7500; 2214-7500
• DOI: 10.1016/j.toxrep.2021.11.009

[Display omitted] •Solid Phase Extraction method via nano γ-alumina/β-cyclodextrin as adsorbent for Cd(II) removal has been investigated.•The amount of Cd(II) evaluate in urban drinking water and Electroplating and finishing industries effluent with Atomic Adsorption Spectroscopy.•Maximum removal of Cd(II) was obtained at pH 7, optimum amount of 16 mL of 0.3 M nitric acid as eluting agent, And in presence of 8 mL of ethylene diamine as ligand.•The detection limits (LOD) and repeatability (%RSD) values were obtained 0.00464 and 0.389, respectively. Cadmium is one of the heavy metals, which is harmful to humans and animals. The toxicity of this metal in the body has caused many studies to remove it in water and soil. Because according to WHO, the maximum concentration of cadmium in drinking water is 3 μg/L. In this study, trace amount of Cd ion or Cd(II) in water and in the industrial effluent sample were determined via the solid phase extraction approach based on the γ-Alumina/β-Cyclodextrin as a sorbent followed by flame atomic absorption spectrometry. The effects of various parameters such as pH, the Cd(II) concentration, amount of sorbent, and type and concentration of the eluting agents were determined on the removal efficiency. Maximum removal of Cd(II) was obtained at pH 7. The limit of detection (LOD) and repeatability (RSD%) values (0.389) obtained were found to be in the ranges of 6.77–6.81 μg/L. The results showed adsorbed cadmium ions are recovered on the nano γ- alumina/β-cyclodextrin surface with an optimum amount of 16 mL of 0.3 M nitric acid as eluting agent at pH 7.