DEGRADATION OF INDIGO CARMINE DYES USING MEDIATED ELECTROCHEMICAL OXIDATION (MEO) METHOD WITH MEDIATOR Ce (IV) OXIDANT AND Ag (I) CATALYST

• Main Author: LALITA FIRDAUSY , GRIYA
• Format: Theses
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/27586
• Institution: Institut Teknologi Bandung

This study aims to degrade indigo carmine dyes which are often used as textile dyes <br /> <br /> <br /> <br /> especially for jeans. The resulting colored wastes cause problems such as the <br /> <br /> <br /> <br /> aesthetics of pollution and disruption to the ecosystem of life in water as well as <br /> <br /> <br /> <br /> serious problems for human health. Therefore, degradation process of indigo carmine <br /> <br /> <br /> <br /> dye by using mediated electrochemical oxidation (MEO) method with Ce (IV) as <br /> <br /> <br /> <br /> mediator and Ag (I) as catalyst. This research was divided into two stages: <br /> <br /> <br /> <br /> voltammetry study and degradation study. The phase of the voltammetry study <br /> <br /> <br /> <br /> consists of determining the working potential of each component, determining the <br /> <br /> <br /> <br /> supporting electrolyte solution and the supporting electrolyte concentration. The <br /> <br /> <br /> <br /> degradation study consisted of parameters optimization such as cerium (III) sulphate <br /> <br /> <br /> <br /> concentration, degradation potential, degradation time, and catalyst concentration of <br /> <br /> <br /> <br /> Ag (I). In this report, it was found that 100 % indigo carmine degraded within 30 <br /> <br /> <br /> <br /> minutes with a cell potential 3.0 volts. The optimum concentration of cerium (III) <br /> <br /> <br /> <br /> sulfate and silver nitrate catalysts in this degradation study were 0.025 M and 0.0025 <br /> <br /> <br /> <br /> M respectively. The results of indigo carmine dye degradation were analyzed using <br /> <br /> <br /> <br /> voltammetric, UV-Vis spectrophotometry, and HPLC analysis, and the determination <br /> <br /> <br /> <br /> of CO2 levels in degradation samples using titration.