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All Journal JURNAL KIMIA SAINS DAN APLIKASI
Nanik Sulistyowati
Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University Jl. Prof. Soedarto, SH., Tembalang, Semarang
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering

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Effect of Acid on Natural Zeolite Dealumination on Indigo Carmine Adsorption Capability Nanik Sulistyowati; Sriyanti Sriyanti; Adi Darmawan
Jurnal Kimia Sains dan Aplikasi Vol 21, No 2 (2018): Volume 21 Issue 2 Year 2018
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (509.281 KB) | DOI: 10.14710/jksa.21.2.102-106

Abstract

Modifying natural zeolite with dealumination using H2SO4 and HCl, and its application to adsorb indigo carmine has been performed. Dealumination was carried out by reacting a natural zeolite with a mixture of KMnO4-H2SO4 and a mixture of KMnO4-HCl then refluxed for 5 hours followed by washing with demineralized water until a neutral pH was obtained and dried for 12 hours at 80°C. Dealuminated zeolites were then characterized by XRD, FTIR and Si/Al ratio measurements. Dealuminated zeolite was then used to adsorb indigo carmine in a batch-shaker system for 30 min with concentration variation XRD diffraction shows that natural zeolite and dealuminated zeolite contain modernit minerals. Dealumination increased the Si/Al ratio from 0.935 to 2.075 and 7.912 which meant that dealumination was successful. The indigo carmine adsorption result showed that zeolite adsorption capacity II> zeolite I> natural zeolite. FTIR data showed that there was no change of zeolite structure before and after adsorption
Co-Authors Adi Darmawan Sriyanti Sriyanti