Abstract
Gamma-irradiation initiated polymerization was utilized to prepare polyacrylonitrile acrylamide nano-silica (P(AN-AM)-NS). Various analytical tools like XRD, FT-IR, SEM, TEM, and DTA and TGA were used to estimate the morphology, functional groups, and structure of P(AN-AM)-NS nanocomposite. The ability of P(AN-AM)-NS nanocomposite to remove Cs(I), Pb(II), Cd(II), Sr(II), and Cu(II) ions from the multi-component system was evaluated by batch techniques considering the influence of (shaking time, pH, reaction temperatures), and capacity. At the optimum pH, distribution coefficients have selectivity order; Pb2+ > Cs+ > Cu2+ > Cd2+ > Sr2+. The kinetic data obey pseudo-second-order models. The capacity was reduced by increasing the heating temperatures of solid powder. The thermodynamic parameters showed an endothermic and spontaneous. The investigation proved that P(AN-AM)-NS nanocomposite is a suitable organic–inorganic sorbent for the sorption of the studied ions from liquid solutions and could be considered as potential material for purification of effluent polluted with these ions.
Highlights
Resin exchangers for environmental pollution remediation were widely used by different investigators [1,2,3]
Many organic & inorganic sorbents were reported with wide-ranging utility
To solve restrictions related to both organic & inorganic sorbents, efforts were made for the combination of composite sorbents with enhanced properties [6]
Summary
Resin exchangers for environmental pollution remediation were widely used by different investigators [1,2,3]. Organic sorbents have impoverished thermal and radiation stability and are unstable in strong radiation fields at high temperatures [4]. The composite sorbents had a strong interest due to their variation of usages in unlike fields such as water purification, chemical separation, electrochemical sensor, solar cell, optical properties, and catalyst [9,10]. The current methods for the sorption of hazardous metals from liquid waste solutions include chemical precipitation, ion exchange, membrane, adsorption, and biosorption [11]. It is one of the biggest challenges to remove contaminants from wastewater, as their importance increases with growing industrial activities [2]
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