| ADSORPTION AND RELEASING PROPERTIES OF BEAD CELLULOSE |
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| 作者姓名： | A.Morales E.Bordallo V.Leon J.Rieumont |
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| 作者单位： | [1]FacultyofChemistryandPharmacy,CentralUniversityofLasVillas.Camajuanikm51／2VillaClara,SantaClara54830,Cuba [2]Research-ProductionPlantCuba9,Quivican,Havana,Cuba [3]FacultyofChemistry,HavanaUniversity,Ave,ZapataandG,Havana10400,Cuba |
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| 摘 要： | 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 Langrnuir. 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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| 关 键 词： | 吸附性质 释放性质 吸附动力学 染料 株状纤维素 亚甲基蓝 茜素红 刚果红 细胞色素C 吸附等温线 |
| 收稿时间： | 2003-05-07 |
| 修稿时间： | 2003-11-17 |
ADSORPTION AND RELEASING PROPERTIES OF BEAD CELLULOSE |
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| A.Morales E.Bordallo V.Leon J.Rieumont.ADSORPTION AND RELEASING PROPERTIES OF BEAD CELLULOSE[J].Chinese Journal of Polymer Science,2004,0(5):417-423. |
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| Authors: | A Morales E Bordallo V Leon J Rieumont |
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| Institution: | a.Faculty of Chemistry and Pharmacy; Central University of Las Villas. Camajuani km 51/2 Villa Clara; Santa Clara 54830; Cuba b.Research-Production Plant Cuba 9; Quivicán; Havana; Cuba c.Faculty of Chemistry; Havana University; Ave. Zapata and G; Havana |
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| Abstract: | 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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| Keywords: | Bead cellulose Adsorption Isotherms Kinetics of adsorption Dyes BEAD CELLULOSE PROPERTIES Crosslinking epichlorohydrin decreasing adsorption capacity acidic alkaline solution study cytochrome C test material Experiments release methylene blue cellulose beads kinetic behavior zero order trend |
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