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

Authors

  • 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.

DOI:

https://doi.org/10.29303/aca.v2i1.32

Keywords:

paramagnetic silica, adsorption,, Ag(I), Rice husk

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.

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...

Downloads

Published

2019-02-15

How to Cite

Antoni, W., Hamdiani, S., & Kamali, S. R. (2019). Thermodynamics and Kinetics of Adoption of Ag (I) on Paramagnetic Silica Rice Husk Ash Surface. Acta Chimica Asiana, 2(1), 69–74. https://doi.org/10.29303/aca.v2i1.32

Issue

Vol. 2 No. 1 (2019)

Section

Articles

License

Authors who publish with ACA: Acta Chimica Asiana agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. This license allows authors to use all articles, data sets, graphics, and appendices in data mining applications, search engines, web sites, blogs, and other platforms by providing an appropriate reference. The journal allows the author(s) to hold the copyright without restrictions and will retain publishing rights without restrictions.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in ACA: Acta Chimica Asiana.
  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).