 |
Article dans une revue
Grafting of aminated oligogalacturonans onto Douglas fir barks. A new route for the enhancement of their lead (II) binding capacities
Abstract : Chemical modification of Douglas fir bark and its subsequent utilization in adsorption of PbII from aqueous solutions was investigated. A new approach to enhance the natural properties of bark by covalent grafting of oligogalacturonans was developed. The polysaccharidic moiety of barks was functionalized by periodate oxidation and derivatized after reductive amination in presence of aminated oligogalacturonic acid. PbII adsorption isotherms of derivatized barks were then determined and compared with the capabilities of crude barks using the Langmuir adsorption model in terms of affinity (b) and maximum binding capacities (qmax). Derivatization resulted in significant enhancements of the qmax values (up to ×8), along with little change of the affinity parameter.
https://hal-unilim.archives-ouvertes.fr/hal-00697420
Contributeur : Claire Douady Connectez-vous pour contacter le contributeur
Soumis le : mardi 15 mai 2012 - 12:10:38
Dernière modification le : mercredi 20 octobre 2021 - 01:31:03
Contributeur : Claire Douady Connectez-vous pour contacter le contributeur
Soumis le : mardi 15 mai 2012 - 12:10:38
Dernière modification le : mercredi 20 octobre 2021 - 01:31:03
