Purpose
The purpose of this paper is to focus on the removal of copper(II) ions from aqueous model salt solution by using chitosan-coated magnetite nanoparticles.
Design/methodology/approach
The chitosan-coated magnetite nanoparticles were characterized using X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy and thermogravimetric differential thermal analysis. The adsorption of Cu(II) by using magnetite nanoparticles as an adsorbent was investigated under different adsorption conditions. The parameters studied were contact time, adsorbent dose and initial concentrations.
Findings
The sorption capacities of prepared samples were studied for the removal of Cu2+ ions from aqueous model solutions with varying experimental conditions of the initial metal concentration, contact time and dosage. It is found that the removal percent of Cu2+ ions increases with an increase in initial metal concentration, contact time and amount of dosage.
Originality/value
Based on the obtained results, this study recommends that chitosan-coated magnetite nanoparticles can also be applied for removal of some heavy metal ions and/or organic compounds in aqueous solution. It is recommended that this study be shared with the polymer-based nanomaterial researchers, especially material science.
The film forming ability of chitin (CT) blended with polyvinyl alcohol (PVA) were prepared with a seriesof nine different ratios of CT:PVA, (10:90, 20:80, 30:70, 40:60, 50:50, 60:40, 70:30, 80:20, 90:10v/v),using 2% chitin solution and 10% polyvinyl alcohol solution. All prepared blended films have a highlytransparent, smooth surface and pale-yellow color. The prepared blended films were characterized by usingthe physical parameters, the physico-mechanical properties, the degree of swelling, and water uptake. Asmeasured by the swelling and water uptake, the blended films showed a higher degree of hydration, as aresult of varying the weight percent of PVA in the membrane matrix. Comparative characterization of theprepared blended films included FT IR and TG-DTA analysis. From the FT IR analysis, the characteristicabsorption peaks of CT-PVA blended film clearly showed that the two polymers were well mixed.According to TG-DTA analysis, the thermal stability of the CT-PVA blended film was found to be slightlylower. The various types of CT-PVA blended films were also tested for antimicrobial activity using anagar disc diffusion method. From these results, all of the prepared CT-PVA blended film showedpronounce antimicrobial activities. Subsequently, the biodegradable nature of the prepared CT-PVAblended films was studied through the soil burial test. Finally, the prepared CT-PVA blended films can beused in wound dressing, and also as packaging materials.
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