Removal of lead from aqueous solution with nanofibrous nanocomposite of polycaprolactone adsorbent modified by nanoclay and nanozeolite
作者： Masoumeh Irandoost , Mohamad Pezeshki-Modaress , Vahid Javanbakht
DOI: 10.1016/J.JWPE.2019.100981
关键词:
摘要: Abstract Removal of heavy metals from aqueous solutions as hazardous, carcinogenic, and toxic pollutants is considered among the most important environmental issues in recent years. In this study, polycaprolactone nanofibrous adsorbent was prepared by electrospinning method then, modified clay mineral zeolite nanoparticles characterized field emission scanning electron microscopy, transmission Fourier transform infrared spectroscopy, energy-dispersive X-ray finally, lead removal ability at an solution evaluated. The experiments were carried out intermittently under different process conditions. Then, impact effective parameters on adsorption including initial concentration metal solution, pH, amount, temperature studied. Also, kinetics, isotherm, thermodynamics determined. results demonstrated that addition to have synergistic effect capacity nanofibers processes showed with increased pH up 5.5, 25 ppm, decreased 0.01 g, 40 °C, value increased. Second-order pseudo-adsorption kinetics observed also isotherm followed Freundlich model. thermodynamic synthetic a spontaneous process.
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