Adsorption and Equilibrium Isotherm Study of Removal of Copper (II) Ions from Aqueous Solution by Chemically Modified Abelmoschus esculentus Fibers

作者：Singha A S^*; Guleria Ashish; Rana Raj K

来源：International Journal of Polymer Analysis and Characterization, 2013, 18(6): 451-463.

DOI：10.1080/1023666X.2013.814080

• Adsorption
• Equilibrium
• Graft copolymer
• Hydrogen peroxide
• Isotherm
• Polyacrylonitrile

The present study explores surface modification of Abelmoschus esculentus by graft copolymerization reaction using acrylonitrile as a monomer and ascorbic acid/H2O2 as a redox initiator. Further, polyacrylonitrile grafted fibers were treated with hydroxylamine to convert the nitrile group of the grafted fiber into the amidoxime group to enhance adsorption of copper ions from wastewater. The graft copolymers and amidoximated fibers were characterized by FT-IR and FE-SEM. The effects of physicochemical parameters such as pH of the solution, initial metal ion concentration, and time on Cu(II) adsorption were studied to optimize condition for maximum adsorption. In addition, Langmuir, Freundlich, and Tempkin models were applied to describe the adsorption isotherm of Cu2+ ions.

• 出版日期2013-8-18