1. Sorption properties of a new thermosensitive copolymeric sorbent bearing phosphonic acid moieties in multi-component solution of cationic species
- Author
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Alain Graillot, Denis Bouyer, Pierre Loison, Sophie Monge, Catherine Faur, Jean-Jacques Robin, Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Institut Européen des membranes (IEM), and Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)
- Subjects
Environmental Engineering ,Sorbent ,Time Factors ,Cations, Divalent ,Phosphorous Acids ,Polymers ,Health, Toxicology and Mutagenesis ,Inorganic chemistry ,Static Electricity ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,complex mixtures ,Divalent ,Phosphates ,Water Purification ,Metal ,chemistry.chemical_compound ,Environmental Chemistry ,Moiety ,Water Pollutants ,Waste Management and Disposal ,Methylphosphonic acid ,Metal sorption ,chemistry.chemical_classification ,Cationic polymerization ,Sorption ,Thermosensitive copolymers ,Hydrogen-Ion Concentration ,021001 nanoscience & nanotechnology ,Pollution ,Carbon ,0104 chemical sciences ,Solutions ,Kinetics ,[CHIM.POLY]Chemical Sciences/Polymers ,chemistry ,13. Climate action ,visual_art ,visual_art.visual_art_medium ,Adsorption ,0210 nano-technology ,Selectivity ,Water Pollutants, Chemical ,Aluminum ,Phosphonic acid - Abstract
In this paper, original thermosensitive copolymers bearing phosphonic acid groups, namely the poly(N-n-propylacrylamide-stat-2-(methacryloyloxy)methylphosphonic acid) (P(NnPAAm-stat-hMAPC1)) were synthesized, and their sorption properties for three divalent cations (Ni(2+), Ca(2+), Cd(2+)) and one trivalent cation (Al(3+)) have been investigated. The sorption experiments were performed with increasing relative amount of cationic pollution compared to the amount of sorption sites (C(n+)/P ratio) in mono and multi-component solutions to investigate the sorption mechanisms. C(n+)/P proved to strongly affect the sorption capacity and high capacities were obtained for all cations at highest C(n+)/P ratios, reaching one mole of C(sorbed)(n+) per phosphonated moiety. For divalent cations, sorption mechanisms were likely to be described by electrostatic interactions only, whereas for aluminum trivalent cation the sorption not only resulted from electrostatic interactions but also from the formation of coordination binding. The selectivity of the phosphonic acid moieties for aluminum cations was demonstrated, highlighting the interest of P(NnPAAm-stat-(h)MAPC1) for their use for the treatment of metallic pollution from wastewater.
- Published
- 2013