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Adsorptive Removal of Zn(II),Co(II) and Their Radioactive Isotopes 65Zn, 60Co on The Surface of Sodium Nano Bentonite Coated with Oleyl-Amine |
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PP: 87-93 |
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Author(s) |
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Mohamed E. Mahmoud,
Ebitasem A. Saad,
Ahmed M. El-Khatib,
Mohamed A. Soliman,
Elhassan A. Allam,
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Abstract |
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| A novel adsorbent material was designed through coating the surface of sodium nano bentonite with oleyl-amine to produce an efficient nanosorbent Na.Bent-O-Amine for the adsorptive removal of Zn (II), Co (II) ions from tap water and 65Zn, 60Co radioactive isotopes from radioactive wastewater. The nonabsorbent was characterized using the Fourier-transform-infrared (FT-IR), X-ray diffraction (XRD), High-resolution transmission electron microscopy (HR-TEM). The particle size of Na.Bent-O-Amine nonabsorbent was in the range (13.59-16.31) nm according to the HR-TEM. Different experimental parameters included, initial pH, contact time, nonabsorbent dosage, initial metal ions concentration were investigated and optimized. The results indicated that the optimum values were obtained by using 5.0 mg of Na.Bent-O-Amine nanosorbent at pH 7.0 and reaction time 50, 60 min for Zn (II), Co (II), respectively. The maximum adsorption capacity values were 225.68, 195.54 mg/g for Zn (II) and Co (II), respectively. Also, the multistage microcolumn system was implemented to remove Zn (II) and Co (II) from tap water and their radioisotopes 65Zn and 60Co from radioactive wastewater. The results of this study confirmed an excellent recovery and the percentage of removal were (91.5-94 %) for Zn (II) / 65Zn and (93-95%) for Co (II) /60Co. |
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