Citation: . ADSORPTION AND RELEASING PROPERTIES OF BEAD CELLULOSE[J]. Chinese Journal of Polymer Science, ;2004, 22(5): 417-423. shu

ADSORPTION AND RELEASING PROPERTIES OF BEAD CELLULOSE

Received Date: 7 May 2003
Revised Date: 17 November 2003

The adsorption of some dyes on samples of bead cellulose obtained in the Unit of Research-Production "Cuba 9"was studied. Methylene blue, alizarin red and congo red fitted the adsorption isotherm of Langmuir. Adsorption kinetics at pH = 6 was linear with the square root of time indicating the diffusion is the controlling step. At pH = 12 a non-Fickian trend was observed and adsorption was higher for the first two dyes. Experiments carried out to release the methylene blue occluded in the cellulose beads gave a kinetic behavior of zero order. The study of cytochrome C adsorption was included to test a proteinic material. Crosslinking of bead cellulose was performed with epichlorohydrin decreasing its adsorption capacity in acidic or alkaline solution.
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