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Article Dans Une Revue Colloids and Surfaces A: Physicochemical and Engineering Aspects Année : 2006

Copper sorption onto a lignocellulosic substrate from wheat bran impregnated with a lipophilic tetraazamacrocycle

Résumé

The topic of this paper is the impregnation with tetraazamacrocyclic ligands of a lignocellulosic substrate extracted from wheat bran. A preliminary N-functionalization by an alkyl pendant arm makes the cyclic tetraamine ligands lipophilic, so as to ensure their immobilization on the substrate. The macrocyclic ligands thus fixed at the surface of the lignocellulosic substrate interact with copper ions in solution to form complexes, as proven by EPR spectra. The end result is an increased retention capacity of the lignocellulosic substrate for pH values lower than 4. Indeed, while the unmodified lignocellulosic substrate does not retain Cu(II) at pH 3, the impregnated substrate exhibits a retention capacity of 4.13 mg g−1.

Dates et versions

hal-01582974 , version 1 (06-09-2017)

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Citer

Stéphanie Sayen, Françoise Chuburu, Emmanuel Guillon, Michel Aplincourt, Henri Handel, et al.. Copper sorption onto a lignocellulosic substrate from wheat bran impregnated with a lipophilic tetraazamacrocycle. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2006, 289 (1-3), pp.126 - 132. ⟨10.1016/j.colsurfa.2006.04.020⟩. ⟨hal-01582974⟩
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