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Umi Hariyani
Udayana University
Earth & Planetary Sciences Electrical & Electronics Engineering Environmental Science Materials Science & Nanotechnology Physics

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PENGARUH KONSENTRASI DAN ION VALENSI LARUTAN TERHADAP RAPAT ARUS DIFUSI ION PADA MEMBRAN KITOSAN Umi Hariyani; Ni Nyoman Rupiasih; I Gde Antha Kasmawan
BULETIN FISIKA Vol 14 No 2 (2013): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

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Abstract

An investigation of the effect of concentration and ion valence of solution on the current density on biopolymer chitosan membrane has been done. The study aimed to determine the current-voltage characteristics of chitosan membrane especially for ion diffusion. Membrane used was chitosan membrane with matrix of 2%, and the electrolyte solution was NaCl (ionic valence+1) and CaCl2 (ionic valence+2), with various concentration of 0.1 mM, 1mM, 10mM, 100mM and 1000mM. Transport process is done by using a model cell membrane consisting of 2 rooms. The voltage difference of membrane is measured using “a calomel electrode of Activon AEP Single Jnct 12x120 mm”. From the observations obtained, the higher concentration difference in the both rooms and the greater value of ion valence, the current density of ionic diffusion increased, especially at the highest concentration difference e.g. 1000 mM: 0.1 mM, the diffusion force generated was large enough.
Co-Authors I Gde Antha Kasmawan Ni Nyoman Rupiasih