title: Adsorption behavior of Fe(II) and Fe(III) ions on thiourea cross-linked chitosan with Fe(III) as template.
abstract: A new type of thiourea cross-linked chitosan with Fe(III) as template (TCCTS template) was synthesized. The adsorption of Fe(II) and Fe(III) on this TCCTS template was studied. The factors affecting adsorption such as pH and contact time were considered. The results showed that the optimum pH value for adsorption was pH = 5.0 and the adsorption equilibrium time was about 60 min. The adsorption isotherms and kinetics were investigated, and the equilibrium data agreed very well with the Langmuir model and the pseudo second-order model could describe adsorption process better than the pseudo first-order model. Results also showed that TCCTS template was a favourable adsorbent for Fe(II) and Fe(III) in aqueous solution.
authors.affiliation: College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China. deardaijun@sina.com
authors.forename: Jun
authors.initials: J
authors.lastname: Dai
authors.forename: FengLian
authors.initials: F
authors.lastname: Ren
authors.forename: ChunYuan
authors.initials: C
authors.lastname: Tao
mesh_terms: D000327:Adsorption; D002614:Chelating Agents / Q000737:chemistry; D048271:Chitosan / Q000138:chemical synthesis / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D005296:Ferrous Compounds / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008956:Models, Chemical; D013696:Temperature; D013890:Thiourea / Q000737:chemistry*
chemical_list: D002614:Chelating Agents; D005290:Ferric Compounds; D005296:Ferrous Compounds; D048271:Chitosan; D013890:Thiourea