Fast sono assisted ferrofluid mediated silver super – Adsorption over magnesium ferrite-copper sulfide chalcogenide with the aid of multivariate optimization

Abstract

This research focuses on the development of a fast ultrasonic assisted ferrofluid mediated methodology to obtain the optimum conditions for silver adsorption from aqueous solutions. For this purpose magnesium ferrite-copper sulfide chalcogenide was synthesized and employed as an efficient nanosorbent. The sorbent was characterized with energy-dispersive X-ray spectroscopy (EDX), field emission scanning electron microscopy (FE-SEM), X-ray powder diffraction (XRD) and vibrational sample magnetometry (VSM) techniques. For obtaining the optimal operating conditions of silver adsorption, response surface methodology (RSM) was used. Tests were performed by Box-Behnken design (BBD). The value of optimum conditions for silver adsorption include pH=2.5, adsorbent dosage=10.0mg, sonicating time=1min and ionic strength=2.2%. According optimum conditions, percentage of removal should be 99.34%. With replication of similar experiment (n=6) average percentage of 100±0.95% was obtained for Ag adsorption which shows good agreement between predicted and experimental results. Silver ion adsorption follow Langmuir model with maximum sorption capacity of 2113mgg. Ultrasonic power helped to prepare ferrofluid and demonstrated that had an important role in better dispersing of it in solution and efficient adsorption of analyte.

Water decontamination in terms of Hg(II) over thiol immobilized magnesium ferrite: Gum Arabic biosorbent—response surface optimization, kinetic, isotherm and comparing study

“…3. The value of magnetic saturation (Ms) for the final composite is 1.8 emu g -1 which is lower than some reports in literature [34]. This can be owe to the low contribution of the magnetic nanoparticles in total volume fraction as well as disaffiliation of the GA as an inert coating layer on the total magnetization.…”

Adsorptive removal of pollutants from water using magnesium ferrite nanoadsorbent: a promising future material for water purification

“…At present, nearly complete removal of toxic dyes from water has been achieved by using magnesium ferrite nanomaterials (Han et al 2014;Das and Dhar 2020). Additionally, magnesium ferrite nanomaterials showed higher efficiency in removal of Cu, Co, Mn, Ni, Pb, Sr, Cd, Cr, PO 4 3− , NO 3 − , F − , radioactive pollutants and pharmaceuticals from water through different treatment designs (Tang et al 2013a;Rezaei et al 2017;Ivanets et al 2018;Li et al 2019;Verma and Chandrajit 2020;Wang et al 2020;Hoijang et al 2020;El-Khawaga et al 2021;Karthikeyan et al 2021;Tatarchuk et al 2021). These indicated that both cationic and anionic pollutants can be adsorbed on the MgFe 2 O 4 surface.…”