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Ani Setyo Pratiwi
Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta
Chemical Engineering, Chemistry & Bioengineering Chemistry

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STUDY OF THERMAL AND ACID STABILITY OF BENTONITE CLAY Karna Wijaya; Ani Setyo Pratiwi; Sri Sudiono; Emi Nurahmi
Indonesian Journal of Chemistry Vol 2, No 1 (2002)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (257.885 KB) | DOI: 10.22146/ijc.21929

Abstract

The thermal and acid stability of the bentonite clays (Na- and Ca-bentonite) have been tested. The thermal stability testing has been carried out by heating 5 gram of the clays  for five hours at 200, 300 and 500 °C respectively, meanwhile acid stability testing was performed by immersing 5 gram clays into 100 mL sulphuric acid 1M, 2M and 3M for 24 hours. The tested clays, then were characterized by means of X-Ray difractometry and IR-spectroscopy methods. The characterization results showed that upon heating, both Ca- and Na-bentonites indicated same thermal stability. However, upon acid treatment, Na-bentonite was found relatively stabiler and more resistance then Ca-bentonite.
Co-Authors Emi Nurahmi Karna Wijaya Sri Sudiono