title: Removal of lead (II) from aqueous environment by a fibrous ion exchanger: polycinnamamide thorium (IV) phosphate.
abstract: The objective of the present research was to synthesize, characterize and to investigate the removal efficiency of lead (II) ion from synthetic lead solution by a hybrid fibrous ion exchanger. In the present study polycinnamamide thorium (IV) phosphate was synthesized by co-precipitation method and was characterized using SEM, XRD, FTIR and TGA-DSC. To know the practical applicability, a detailed removal study of lead ion was carried out using the material. The removal of lead was 81.2% under optimum conditions. Adsorption kinetic study revealed that the adsorption process followed first order kinetics. Adsorption data were fitted to linearly transformed Langmuir isotherm with R(2) (correlation coefficient) >0.99. Thermodynamic parameters were also calculated to study the effect of temperature on the removal process. In order to understand the adsorption type, equilibrium data were tested with Dubinin-Radushkevich isotherm.
authors.affiliation: Department of Chemistry, Purushottam Institute of Engineering & Technology, Rourkela 770034, Orissa, India. mintoo_min2@rediffmail.com
authors.forename: Mahamudur
authors.initials: M
authors.lastname: Islam
authors.forename: Rajkishore
authors.initials: R
authors.lastname: Patel
mesh_terms: D000327:Adsorption; D002934:Cinnamates; D007474:Ion Exchange; D007854:Lead / Q000302:isolation & purification*; D010710:Phosphates; D011108:Polymers; D017970:Thorium Compounds / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D002934:Cinnamates; D010710:Phosphates; D011108:Polymers; D017970:Thorium Compounds; D014874:Water Pollutants, Chemical; D007854:Lead; C411088:cinnamamide