title: Modification and characterization of PET fibers for fast removal of Hg(II), Cu(II) and Co(II) metal ions from aqueous solutions.
abstract: A new chelating fiber (PET-TSC) was prepared with PET for fast removal of Hg(2+), Cu(2+) and Co(2+) from water. Elemental analysis, SEM, BET surface area, (13)C NMR, FTIR and X-ray diffraction spectra were used to characterize PET-TSC. The higher uptake capacity of the studied metal ions was observed at higher pH values. Kinetic study indicated that the adsorption of Hg(2+), Cu(2+) and Co(2+) followed the pseudo-second-order equation, suggesting chemical sorption as the rate-limiting step of the adsorption process. The best interpretation for the equilibrium data was given by Langmuir isotherm, and the maximum adsorption capacities were 120.02, 96.81 and 78.08 mg/g for Hg(2+), Cu(2+) and Co(2+) ions, respectively. 1M HCl or 0.1M EDTA could be used as effective eluant to desorb the Hg(2+), Cu(2+) and Co(2+) adsorbed by PET-TSC, and the adsorption capacity of PET-TSC for the three heavy metal ions could still be maintained at about 90% level at the 5th cycle. Accordingly, it is expected that PET-TSC could be used as a promising adsorbent for fast removal of heavy metal ions from water, and the present work also might provide a simple and effective method to reuse the waste PET fibers.
authors: Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt. monierchem@yahoo.com
authors: M
authors: M
authors: Monier
authors: D A
authors: DA
authors: Abdel-Latif
mesh_terms: D000181:Acrylonitrile / Q000737:chemistry; D000327:Adsorption; D002614:Chelating Agents; D003035:Cobalt / Q000302:isolation & purification*; D003300:Copper / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D007477:Ions / Q000737:chemistry; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D008628:Mercury / Q000302:isolation & purification*; D049268:Positron-Emission Tomography / Q000379:methods*; D012663:Semicarbazides / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*; D014961:X-Ray Diffraction
chemical_list: D002614:Chelating Agents; D007477:Ions; D012663:Semicarbazides; D014874:Water Pollutants, Chemical; D003035:Cobalt; C005151:thiosemicarbazide; D003300:Copper; D008628:Mercury; D000181:Acrylonitrile