To access the full text documents, please follow this link: http://hdl.handle.net/2117/19713

Sorption of boron calcium alginate gel beads
Ruiz Planas, Montserrat; Tobalina, Carlos; Demey Cedeño, Hary; Barrón Zambrano, Jesús Alberto; Sastre Requena, Ana María
Universitat Politècnica de Catalunya. Departament d'Enginyeria Química; Universitat Politècnica de Catalunya. SETRI - Grup de Tècniques de Separació i Tractament de Residus Industrials
In this work, the removal of boron by a biopolymer of alginate was studied in an aqueous solution. The effects of pH, initial boron concentration, alginate concentration in the beads and stirring time were evaluated. The ratio of mannuronic acid to guluronic acid (M/G) in the alginic acid used in this study was determined by NMR. FTIR spectroscopy was used to characterize the alginate and to observe the interactions produced by the boron adsorbed onto the beads. The maximum boron removal observed was 94 mg/g; this rate was obtained with a high initial boron concentration in an alkaline medium. A study of the isotherms established that the experimental data conform better to the Langmuir than the Freundlich isotherm model. The results obtained in the kinetic studies showed that the pseudo-second-order adsorption model is predominant and that the overall rate of boron adsorption appears to be controlled by chemisorptions.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria química::Química del medi ambient::Química de l'aigua
Boron
Absorption
Beads
Boron
Removal
Alginate
Sorption
Extracció (Química)
Bor
Absorció (Físico-química)
info:eu-repo/semantics/publishedVersion
Article
         

Show full item record

Related documents

Other documents of the same author

Demey Cedeño, Hary; Ruiz Planas, Montserrat; Barrón Zambrano, Jesús Alberto; Sastre Requena, Ana María
Ruiz Planas, Montserrat; Roset Calzada, María Lourdes; Barrón Zambrano, Jesús Alberto; Sastre Requena, Ana María; Pérez González, Juan Jesús
Demey Cedeño, Hary; Vincent, Thierry; Ruiz Planas, Montserrat; Nogueras Cervera, Marc; Sastre Requena, Ana María; Guibal, Eric
Demey Cedeño, Hary; Vincent, Thierry; Ruiz Planas, Montserrat; Sastre Requena, Ana María; Guibal, Eric
Guibal, E.; Figuerola Piñol, A.; Ruiz Planas, Montserrat; Vincent, T.; Sastre Requena, Ana María; Jouannin, C.
 

Coordination

 

Supporters