Fabrication of Adsorbent Based on Biocompatible As Effective Nano-Adsorbent for Magnetic Dispersive Solid-Phase Extraction of As(III) from Aqueous

In this work, we aim to combine modified magnetic eggshell membrane with β-cyclodextrin to create a new type of the magnetic nanocomposite for efficient removal of arsenic (As(III)) in an efficient way. After characterizations the biocompatible nano-adsorbent using FTIR, XRD, SEM, and BET, important parameters affecting the adsorption of As(III) including pH, volume of sample, dosage of the adsorbent, type of elution solvent, competitive ions were investigated. And temperature, adsorption time and volume of 0.010 M nitric acid were investigated in a multivariate method with the help of the Design Expert program. The adsorbent can be reused 5 times without significant change in adsorption efficiency. The Langmuir isotherm model was fitted better with experimental isotherm data than Freundlich and Temkin models. Maximum adsorption capacities (q_max) of the biocompatible nano-adsorbent were 275.3 mg g^–1. With checking the basic process of the metal adsorption mechanism, was found that the pseudo-second-order model was suitable for interpretation of the adsorption mechanism. At last, the biocompatible nano-adsorbent exhibited high performance to removal the As(III) from aqueous solutions.