title: Chitin-Prussian blue sponges for Cs(I) recovery: from synthesis to application in the treatment of accidental dumping of metal-bearing solutions.
abstract: Prussian blue (i.e., iron[III] hexacyanoferrate[II], PB) has been synthesized by reaction of iron(III) chloride with potassium hexacyanoferrate and further immobilized in chitosan sponge (cellulose fibers were added in some samples to evaluate their impact on mechanical resistance). The composite was finally re-acetylated to produce a chitin-PB sponge. Experimental conditions such as the freezing temperature, the content of PB, the concentration of the biopolymer and the presence of cellulose fibers have been varied in order to evaluate their effect on the porous structure of the sponge, its water absorption properties and finally its use for cesium(I) recovery. The concept developed with this system consists in the absorption of contaminated water by the composite sponge, the in situ binding of target metal on Prussian blue load and the centrifugation of the material to remove treated water from soaked sponge. This material is supposed to be useful for the fast treatment of accidental dumping of Cs-contaminated water.
authors: Ecole des mines d'Alès, Centre des Matériaux des Mines d'Alès, C2MA/MPA/BCI, 6 avenue de Clavières, F-30319 Alès Cedex, France; Commissariat à l'Energie Atomique, CEA Marcoule, DEN/DTCD/SPDE/LPSD,BP 17171, F-30207 Bagnols sur Cèze, France.
authors: C
authors: C
authors: Vincent
authors: Commissariat à l'Energie Atomique, CEA Marcoule, DEN/DTCD/SPDE/LPSD,BP 17171, F-30207 Bagnols sur Cèze, France.
authors: Y
authors: Y
authors: Barré
authors: Ecole des mines d'Alès, Centre des Matériaux des Mines d'Alès, C2MA/MPA/BCI, 6 avenue de Clavières, F-30319 Alès Cedex, France.
authors: T
authors: T
authors: Vincent
authors: Ecole des mines d'Alès, Center des Matériaux des Mines d'Alès, 6 avenue de Clavières, F-30319 Alès Cedex, France.
authors: J-M
authors: JM
authors: Taulemesse
authors: Institut Charles Gerhardt - UMR5253, CNRS-UM2-ENSCM-UM1, ICGM-MACS-R2M2, 8 rue de l'Ecole Normale, F-34296 Montpellier Cedex 05, France.
authors: M
authors: M
authors: Robitzer
authors: Ecole des mines d'Alès, Centre des Matériaux des Mines d'Alès, C2MA/MPA/BCI, 6 avenue de Clavières, F-30319 Alès Cedex, France. Electronic address: Eric.Guibal@mines-ales.fr.
authors: E
authors: E
authors: Guibal
mesh_terms: D000059:Accidents; D000327:Adsorption; D002482:Cellulose / Q000737:chemistry; D002586:Cesium / Q000737:chemistry*; D002686:Chitin / Q000737:chemistry*; D005295:Ferrocyanides / Q000737:chemistry*; D005615:Freezing; D016062:Porosity; D012996:Solutions; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
chemical_list: D005295:Ferrocyanides; D012996:Solutions; D014874:Water Pollutants, Chemical; D014867:Water; D002686:Chitin; D002586:Cesium; D002482:Cellulose; C000170:ferric ferrocyanide
keywords: Cesium; Chitin; Prussian blue; Sorption; Sponge; Structure-synthesis correlation; Water absorption