title: Selective adsorption of Pb (II) ions by amylopectin-g-poly (acrylamide-co-acrylic acid): A bio-degradable graft copolymer.
abstract: Amylopectin-g-poly (acrylamide-co-acrylic acid) [AP-g-poly (AM-co-AA)] was synthesised in water medium by using potassium perdisulphate as an initiator. The graft copolymer was characterized by molecular weight determination by size exclusion chromatography (SEC), fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) spectroscopy, scanning electron microscope (SEM) studies, thermal analysis, measurement of neutralisation equivalent and biodegradation studies. The graft copolymer was used for Pb (II) ion removal from aqueous solution. The Pb (II) ion removal capacity of the graft copolymer was also compared with another laboratory developed graft copolymer Amylopectin-g-poly (acrylamide) (AP-g-PAM). Both the graft copolymers were also used for the competitive metal ions removal with Pb (II)/Cd (II), Pb (II)/Zn (II), Pb (II)/Ni (II), Pb (II)/Cu (II) pairs separately under similar conditions. AP-g-poly (AM-co-AA) showed better Pb (II) ion adsorbing power over AP-g-PAM and also much selective towards Pb (II) ions. The adsorption follows a second order rate equation and Langmuir isotherm model.
authors.affiliation: Postgraduate Division of Chemistry, Midnapore College (Autonomous), Midnapore, Paschim Medinipur, 721101, West Bengal, India.
authors.forename: Dinabandhu
authors.initials: D
authors.lastname: Sasmal
authors.affiliation: Department of Chemistry, Sidho Kanho Birsa University, Purulia, 723101, India. Electronic address: jayantajune@gmail.com.
authors.forename: Jayanta
authors.initials: J
authors.lastname: Maity
authors.affiliation: Postgraduate Division of Chemistry, Midnapore College (Autonomous), Midnapore, Paschim Medinipur, 721101, West Bengal, India.
authors.forename: Haradhan
authors.initials: H
authors.lastname: Kolya
authors.affiliation: Postgraduate Division of Chemistry, Midnapore College (Autonomous), Midnapore, Paschim Medinipur, 721101, West Bengal, India. Electronic address: tridib_tripathy@yahoo.co.in.
authors.forename: Tridib
authors.initials: T
authors.lastname: Tripathy
mesh_terms: D000178:Acrylamides / Q000737:chemistry* / Q000378:metabolism; D000327:Adsorption; D000687:Amylopectin / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D007854:Lead / Q000737:chemistry* / Q000302:isolation & purification; D008970:Molecular Weight; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D000178:Acrylamides; D014874:Water Pollutants, Chemical; C431184:poly(acrylamide-co-acrylic acid); D007854:Lead; D000687:Amylopectin
keywords: Acrylamide; Acrylic acid; Amylopectin; Biodegradation; Graft copolymer; Pb (II) ion removal