Abstract
The study is aimed at assessing how the date palm wood fibers (DPWF) can be used for the removal of heavy metals from water. The study involved examination of the radical polymerization and graft polymerization parameters such as reaction period, reaction time, monomer volume, amount of the catalyst, and concentration of initiator to obtain the maximum yield of graft polymerization. Fiber and copolymer were characterized using SEM and FT-IR spectroscopy to ensure the completion of polymerization. Hydroxylamine hydrochloride was used for treating the grafted copolymers for the preparation of polyamidoxime chelating resin, which was then examined for removing the heavy metal ions. Different resin dosages, contact time, and initial concentrations were used, and the batch technique experiment was utilized. The study also applied the Langmuir and Freundlich isotherm model, and Langmuir was found to be better. The absorption ability was found to be better for polyamidoxime resin for metal ions of cadmium (II), chromium (III), and lead (II).
Highlights
Discharge of heavy metals in the industrial effluents has increased the problem of water pollution [1]
This study used the grafted copolymerization of date palm wood fiber using hydrogen peroxide as an initiator and ammonium ferrous sulphate as a catalyst
The grafting percentage depends upon the parameters such as the reaction period, reaction temperature, amount of the catalyst, concentration of the initiator, and monomer volume
Summary
Discharge of heavy metals in the industrial effluents has increased the problem of water pollution [1]. The interest in the use of plant-based fiber has increased, which is commercially in the production of polymer composites [1] These composites can be used for removing the heavy metal ions from water especially when conventional methods are proved ineffective [11]. El Nemr et al [25] assessed the removal of toxic chromium (VI) from different aqueous solutions with the help of an adsorbent containing activated carbon obtained date palm seed. Studies have shown that the use of date stone and palm tree waste increases the Cu2+ adsorption, where equilibrium was obtained within 120 min [26, 27]. The adsorption capacities of raw date pits and CO2 activated date pits were compared with respect to the adsorption of copper and zinc ions.
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