13 A comparison of adsorption isotherms of crosslinked poly(N-vinylpyrrolidone) basic brown 1 binding system

Author(s): Saraydin, D; Karadag, E

Title: A comparison of adsorption isotherms of crosslinked poly(N-vinylpyrrolidone) basic brown 1 binding system

Source: TURKISH JOURNAL OF CHEMISTRY, 20 (3): 234-243 1996

Language: English

Document Type: Article

Author Keywords: crosslinked poly(N-vinylpyrrolidone); basic brown 1; binding; adsorption isotherm

Keywords Plus: HYDROGELS

Abstract: In this study, the binding of a basic dye such as basic brown 1 [BB 1] onto a crosslinked poly(N-vinylpyrrolidone) [CPVP] was investigated. Adsorption of the azo dye onto the CPVP was studied by the batch adsorption technique at 25 degrees C. In adsorption experiments a Langmuir type (L) adsorption was found with respect to the Giles classification system. Binding parameters such as initial binding constant (K-i), equilibrium constant (K), monolayer coverage (n), site-size (u), and maximum fractional occupancy (<(theta)over cap>), and thermodynamic parameters such as heat of adsorption (Delta H), free energy of adsorption (Delta G) and entropy of adsorption (Delta S) for the CPVP/BB 1 system were calculated by using Klotz, Scatchard, and Langmuir linearization methods.

Reprint Address: Saraydin, D, CUMHURIYET UNIV,DEPT CHEM,TR-58140 SIVAS,TURKEY.

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Cited Reference Count: 18

Times Cited: 3

Publisher: SCIENTIFIC TECHNICAL RESEARCH COUNCIL TURKEY

Publisher Address: PO BOX 605 YENISEHIR, 06445 ANKARA, TURKEY

ISSN: 1010-7614

29-char Source Abbrev.: TURK J CHEM

ISO Source Abbrev.: Turk. J. Chem.

Source Item Page Count: 10

Subject Category: CHEMISTRY, MULTIDISCIPLINARY; ENGINEERING, CHEMICAL

ISI Document Delivery No.: VQ521