Sorption of Some Heavy Metal Ions from Aqueous Solutions by Polypropylene Fibers Grafted with Acrylic Acid under the Effect of Gamma Irradiation | ||||
| Egyptian Journal of Radiation Sciences and Applications | ||||
| Article 5, Volume 27, Issue 1, December 2014, Page 63-78 PDF (759.45 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejrsa.2014.1509 | ||||
 View on SCiNiTO | ||||
| Abstract | ||||
| POLYPROPYLENE FIBERS (PP) grafted with poly acrylic acid (PAAc) were prepared under the effect of gamma irradiation to be used as an adsorbent matrix for Co2+ and Ni2+ ions from aqueous solutions. The different factors which affect the grafting process such as grafting solution, inhibitor concentration, irradiation dose and the monomer concentration were investigated. The grafted PP fibers were characterized by using Fourier-transform infrared (FTIR), X-ray diffraction (XRD), Thermogravimetric analysis (TGA), Differential scanning calorimetery (DSC) and Scanning electron microscopy (SEM). The effect of grafting yield on the mechanical properties of grafted PP fibers was also studied. The different conditions which affect the adsorption capacity of grafted PP fibers towards the metal ions, such as solution pH and contact time were investigated. The adsorption isotherm was studied according to the Langmuir isotherm model. The effect of regeneration cycles on the adsorption capacity of grafted PP fibers was investigated. | ||||
| Keywords | ||||
| polypropylene; γ-rays; metal ions; Adsorption | ||||
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