title: Adsorption of lead (II) ions onto novel cassava starch 5-choloromethyl-8-hydroxyquinoline polymer from an aqueous medium.
abstract: Adsorption of lead (II) ions onto cassava starch 5-choloromethyl-8-hydroxyquinoline polymer (CSCMQ) was investigated with the variation in the parameters of pH, contact time, lead (II) ions concentration, temperature and the adsorbent dose. The Langmuir and Freundlich models have been applied. CSCMQ was characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. Results showed that the adsorption process was better described by the Langmuir model. Adsorption kinetics data obtained for the metal ions sorption were investigated using pseudo-first-order, pseudo-second-order and intraparticle diffusion model. The maximum adsorption capacities (qm) were 46.512, 43.859 and 42.735 mg/g at 25, 35 and 45 °C, respectively. The dynamical data fit well with the second-order kinetics model. The results indicate that CSCMQ could be employed as low-cost material for the adsorption of Pb(II) ions from aqueous medium.
authors.affiliation: Department of Environmental Science, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India E-mail: prapti.shah1126@gmail.com.
authors.forename: Prapti U
authors.initials: PU
authors.lastname: Shah
authors.affiliation: Department of Environmental Science, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India E-mail: prapti.shah1126@gmail.com.
authors.forename: Nirav P
authors.initials: NP
authors.lastname: Raval
authors.affiliation: Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India.
authors.forename: Mayur
authors.initials: M
authors.lastname: Vekariya
authors.affiliation: Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India.
authors.forename: Poonam M
authors.initials: PM
authors.lastname: Wadhwani
authors.affiliation: Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India.
authors.forename: Nisha K
authors.initials: NK
authors.lastname: Shah
mesh_terms: D000327:Adsorption; D004058:Diffusion; D006912:Hydroxyquinolines / Q000737:chemistry*; D007477:Ions; D007700:Kinetics; D007854:Lead / Q000737:chemistry*; D002365:Manihot / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D011108:Polymers; D017550:Spectroscopy, Fourier Transform Infrared; D013213:Starch / Q000737:chemistry*; D013696:Temperature; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: C000613673:5-choloromethyl-8-hydroxyquinoline; D006912:Hydroxyquinolines; D007477:Ions; D011108:Polymers; D014874:Water Pollutants, Chemical; D014867:Water; D007854:Lead; D013213:Starch