Acta Chimica Asiana
Vol. 1 No. 2 (2018)

Synthesis Of Paramagnetic Merkapto Silica Hybrid From Rice Husk Ash For Ag(I) Adsorben

Saral Dwi Miftiyati (Department of Chemistry, Faculty of Mathematics and Natural Science, University of Mataram, Indonesia)
Saprini Hamdiani (Department of Chemistry, Faculty of Mathematics and Natural Science, University of Mataram, Indonesia)
Made Ganesh Darmayanti (Department of Chemistry, Faculty of Mathematics and Natural Science, University of Mataram, Indonesia)



Article Info

Publish Date
13 Aug 2018

Abstract

A study has been conducted on the synthesis of paramagnetic mercapto silica hybrids as metal adsorbent of Ag(I). The aim of this study was to synthesis paramagnetic mercapto silica hybrid from rice husk ash waste, knowing the characteristics of paramagnetic mercapto silica hybrid from rice husk ash waste, and to determine the effect of pH, metal ions concentration, and the contact time on the value of adsorption capacity (Q). Based on the results of the study, it was found that paramagnetic mercapto silica hybrids can be synthesized from the rice husk ash waste. Characterization using FTIR spectroscopy showed that silanol (Si-OH), siloxan (Si-O-Si), -SH, and Fe-OH functional groups, and characterization of paramagnetic mercapto silica hybrid structures using XRD to show crystalline compounds with a position value of 2θ = 35.4 which showed that the magnetite material of Fe3O4 was coated by silica. Paramagnetic mercapto silica hybrids from rice husk waste can be used as adsorbent of Ag (I) metal at optimum conditions of pH 3, contact time of 120 minutes, and adsorption capacity of 392.01 mg/g. The suitable isotherm model is the Freundlich isotherm model which means the absorption of metal Ag (I) occurs physically, while adsorption of kinetics followed the pseudo II order kinetic model with a value of k = 3.01 g.mg-1 minute-1.

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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 ...