|
|||||
|
|
Adsorption of As(III) on chitosan-Fe-crosslinked complex (Ch-Fe) |
|
| Authors: | Dos Santos Helen Helena Demarchi Carla Albertina Rodrigues Clovis Antonio Greneche Jean Marc Nedelko Nataliya Slawska-Waniewska Anna |
| Affiliation: | a Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajaí (UNIVALI), Itajaí, 88302-202 Santa Catarina, Brazil b Laboratoire de Physique de l’Etat Condensé, UMR CNRS 6087, Université du Maine, 72085 Le Mans Cedex, France c Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46 PL-02668, Warsaw, Poland |
| Abstract: | It was reported the adsorption of As(III) on the surface of the chitosan-Fe-crosslinked complex. Theoretical correlation of the experimental equilibrium adsorption data for As(III)/Ch-Fe system is best explained by the non-linearized form Langmuir-Freundlich isotherm model. At optimum conditions, pH 9.0, the maximum adsorption capacity, calculated using the Langmuir-Freundlich isotherm model was 13.4 mg g−1. The adsorption kinetics of As(III) onto Ch-Fe are described by the pseudo-first-order kinetic equation. The results of the Mössbauer spectroscopy showed that there is no redox process on the surface of the adsorbent. |
| Keywords: | Chitosan iron complex As(III) Adsorption isotherm Mö ssbauer spectroscopy |
| 本文献已被 ScienceDirect PubMed 等数据库收录！ | |