FABRICATION OF CHITOSAN NANOFIBER BY ELECTROSPINNING PROCESS AND ITS APPLICATION FOR THE REMOVAL OF CD2+, NI2+, PB2+ AND CU2+ IONS FROM AQUEOUS SOLURIONS
Publish place: The first national conference on new technologies in Chemistry & Chemical Engineering
Publish Year: 1392
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
NCNC01_626
تاریخ نمایه سازی: 14 شهریور 1392
Abstract:
In the current study, chitosan nanofibers were prepared by the electrospinning process and their application for the removal of Cd2+, Ni2+, Pb2+ and Cu2+ were investigated. In the electrospinnig process, the homogeneous electrospun nanofibers with the average diameter and surface area of 158 nm and 260.8 m2 g-1 were obtained by applied voltage of 20 kV, tip-collector distance of 13.5 cm and solution flow rate of 0.2 mL h-1. Batch adsorption studies such as chitosan content, pH and contact time on the removal of metal ions by the chitosan nanofibers were evaluated. Results showed that the adsorption capacity of different metal ions were decreased in order of Pb(II) < Cd(II) < Cu(II) < Ni(II). The kinetic data were analyzed by pseudo-first-order and pseudo-second-order kinetic models. Based on results, the kinetic data were found to follow the pseudo-second-order model for all of metal ions data. The reusability of chitosan nanofibers for the removal of different metal ions was also determined after five sorption–desorption cycles.
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Authors
Majid Aliabadi
Department of Chemical Engineering, Islamic Azad University, Birjand Branch, Birjand, Iran
Mohammad Irani
Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran