Acta Chimica Asiana
Vol. 2 No. 1 (2019)

Thermodynamics and Kinetics of Adoption of Ag (I) on Paramagnetic Silica Rice Husk Ash Surface

Wardian Antoni (Department of Chemistry, Faculty of Mathematic and Natural Science, University of Mataram)
Saprini Hamdiani (Department of Chemistry, Faculty of Mathematics and Natural Science, University of Mataram.)
Siti Raudhatul Kamali (Department of Chemistry, Faculty of Mathematics and Natural Science, University of Mataram.)



Article Info

Publish Date
15 Feb 2019

Abstract

Synthesis of paramagnetic silica from rice husk ash has been carried out as an adsorbent for heavy metal Ag (I). This study tried to synthesis and characterized the thermodynamics and kinetics behaviour of paramagnetic silica from the husk ash as metal adsorbent Ag (I). Determination of optimal conditions for adsorption of metal ions Ag (I) is carried out by varying the pH, concentration, and contact time of the adsorbent. The results showed that the optimum pH was at pH 3, optimal concentration Ag(I) of 350 ppm and optimal contact time of 90 minutes. At optimal conditions, paramagnetic silica adsorption capacity for metal ion Ag (I) is 323.62 mg/g. The isotherm model that is suitable for paramagnetic silica is the Freundlich isotherm model. The kinetic model that is suitable for paramagnetic silica is the Pseudo Order 2 kinetic model.

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Journal Info

Abbrev

ACA

Publisher

Subject

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology

Description

Acta Chimica Asiana (online ISSN 2550-0503, print ISSN 2550-049x) is a peer-reviewed, open access journal that publishes high-quality original research articles as well as review articles and short communication in all areas of Chemistry, including Chemical Education and Chemical Engineering. The ...