Utilization of rarasaponin natural surfactant for organo-bentonite preparation: Application for methylene blue removal from aqueous effluent

Kurniawan, Alfin and Sutiono, Hogiartha and Yi-Hsu, Ju and Soetaredjo, Felycia Edy and Ayucitra, Aning and Yudha, Aditya and Ismadji, Suryadi (2011) Utilization of rarasaponin natural surfactant for organo-bentonite preparation: Application for methylene blue removal from aqueous effluent. Microporous and Mesoporous Meterials, 142 (1). pp. 184-193. ISSN 1387-1811

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Abstract

Rarasaponin that belongs to the natural surfactant was used as modifying agent for preparation of organo-bentonite. This surfactant was extracted from wild plant Sapindus rarak DC. The modifying process was conducted by microwave thermal irradiation. The characterization of bentonite and its modified form was carried out using FTIR, nitrogen sorption and XRD analysis. In order to test the adsorption capability of organo-bentonite, batch adsorption experiments of methylene blue from aqueous solution using this adsorbent were conducted under several operating conditions. The highest adsorption capacity (qm) of organo-bentonite obtained in this study was 256 mg/g while for raw bentonite was 194 mg/g at 60 °C. The adsorption isotherm and kinetic data were modeled using several well known models. Freundlich isotherm model represented the adsorption equilibrium data better than the Langmuir isotherm model. For the kinetic model, the pseudo-second order gave reasonable parameters and could correlate the kinetic data well. New mechanisms of organo-bentonite formation as well as adsorption of methylene blue on the surface of organo-bentonite were also proposed in this paper.

Item Type: Article
Uncontrolled Keywords: Organo-bentonite, Rarasaponin, Adsorption
Subjects: Engineering > Chemical Engineering
Divisions: Faculty of Engineering > Chemical Engineering Study Program
Depositing User: Suryadi. Ismadji
Date Deposited: 23 May 2017 10:09
Last Modified: 19 Jul 2018 04:38
URI: http://repository.wima.ac.id/id/eprint/10799

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