title: Removal of Pb(II) ions by using magnetic chitosan-4-((pyridin-2-ylimino)methyl)benzaldehyde Schiff's base.
abstract: A novel crosslinked magnetic chitosan-4-((pyridin-2-ylimino)methyl)benzaldehyde Schiff's Base (m-CSPIB) was prepared by crosslinking of magnetic iron oxide nanoparticles with chitosan-4-((pyridin-2-ylimino)methyl)benzaldehyde schiff's base and used as an biosorbent for the removal of Pb(II) ions from aqueous environment. The biopolymer has been characterized by XRD, FT-IR, SEM, TEM,1H NMR and VSM analysis. Kinetic studies were performed, and the data were fitted well with the pseudo-second-order model. The equilibrium data followed Langmuir isotherm model and the maximum monolayer sorption capacity was found to be 104.16 for Pb(II) ions at 323K. Different thermodynamic parameters namely, change in Gibbs free energy, enthalpy change, and entropy changes were also evaluated from the temperature dependence, and the results suggested that the sorption of Pb(II) onto m-CSPIB was feasible, spontaneous and endothermic in nature.
authors: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China. Electronic address: yuvaraj.svu@gmail.com.
authors: Yuvaraja
authors: Y
authors: Gutha
authors: Department of Environmental Science and Engineering, Ewha Womans University, 11-1 Daehyun-Dong, Seodaemun-Gu, Seoul 120-750, Republic of Korea.
authors: Venkata Subbaiah
authors: VS
authors: Munagapati
mesh_terms: D001547:Benzaldehydes / Q000737:chemistry*; D048271:Chitosan / Q000031:analogs & derivatives / Q000737:chemistry; D052203:Ferrosoferric Oxide / Q000737:chemistry*; D007854:Lead / Q000737:chemistry*; D008956:Models, Chemical; D012545:Schiff Bases / Q000737:chemistry; D018508:Water Purification / Q000379:methods*
chemical_list: D001547:Benzaldehydes; D012545:Schiff Bases; D007854:Lead; D048271:Chitosan; D052203:Ferrosoferric Oxide
keywords: 2-amino pyridine; Chitosan; Terephthalaldehyde