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ADSORPTION AND RELEASING PROPERTIES OF BEAD CELLULOSE
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作者 A.Morales E.Bordallo +1 位作者 V.Leon j.rieumont 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2004年第5期417-423,共7页
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.... 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. 展开更多
关键词 Bead cellulose ADSORPTION Isotherms Kinetics of adsorption DYES
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