Title: The influence of Cetyltrimethylammonium Bromide Surfactant on The Ability of Natural Zeolite as An Adsorbent for Indigo Carmine Dye
Authors: Sriatun, W.F. Afiah, Pardoyo
Volume: 8
Issue: 10
Pages: 176-180
Publication Date: 2024/10/28
Abstract:
In the textile industry, indigo carmine is a synthetic dye used to produce blue. Disposal of these dyes in waters can disrupt the water ecosystem, therefore efforts need to be made to reduce the concentration or degrade these dyes. This research aims to obtain natural zeolite modified by cetyltrimethylammonium bromide (CTAB) as an adsorbent for indigo carmine dye. The research procedure consisted of (i) natural zeolite activation, (ii) modification with CTAB at concentrations of 20, 40 and 60 mM, (iii) adsorption of indigo carmine dye at varying concentrations of 40, 60, 80, 100 and 120 ppm and varying contact times of 3, 5, 10, 15, 30, 45 and 60 minutes, (iv) The activated and CTAB-modified zeolites were characterized by FTIR, while the adsorption results were analyzed by UV-vis spectroscopy. The results show that the adsorption of indigo carmine tends to increase with increasing adsorbate concentration and contact time. At indigo carmine concentrations of 40, 60, 80, 100 and 120 ppm, adsorption reached 99% when the concentration was 40 ppm with an optimum contact time of 45 minutes from variations of 3, 5, 10, 15, 30, 45 and 60 minutes. The presence of CTAB in zeolite is very effective in increasing the adsorption performance of indigo carmine dye.