Adsorption of Cu2+ metal ions on dithizone-immobilized natural bentonite

Fadela, Dian Mira and Mudasir, Mudasir and Suratman, Adhitasari (2020) Adsorption of Cu2+ metal ions on dithizone-immobilized natural bentonite. Key Engineering Materials, 840 KE. 64 – 70. ISSN 10139826

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Abstract

The research of adsorption of Cu2+ metal ion on dithizone-immobilized natural bentonite (DNB) had been carried out. The experiment was begun by the activation of natural bentonite with HCl 4 M and dithizone-immobilized on activated bentonite surface. This study included synthesis and characterization of dithizone-immobilized bentonite and its application in adsorption of Cu2+ metal ions. The type of interaction occurred in the adsorption was tested by sequential desorption. The result showed that dithizone successfully immobilized on activated natural bentonite (ANB). The optimum conditions for Cu2+ metal ions adsorption using dithizone-immobilized natural bentonite are at pH 5; 0.1 g mass of adsorbent, with interaction time 60 min, and the initial concentration of ion at 80 ppm. Kinetics and adsorption isotherm studies suggest that the capacity, of the dithizone-immobilized natural bentonite in adsorbing Cu2+ metal ion is significantly improved compared to activated natural bentonite. The adsorption of Cu2+ metal ions by activated natural bentonite was through several interactions dominated by electrostatic interaction (82). Otherwise, the interaction of dithizone-immobilized natural bentonite with Cu2+ metal ions in the sequence were dominated by the mechanism of complex formation of (75). The result shows that the immobilization of dithizone changes the type of electrostatic interaction into complex formation. © 2020 Trans Tech Publications Ltd, Switzerland.

Item Type: Article
Additional Information: Cited by: 0; Conference name: 5th International Conference on Science and Technology, ICST 2019; Conference date: 30 July 2019 through 31 July 2019; Conference code: 239689
Uncontrolled Keywords: Adsorption; Bentonite; Chlorine compounds; Electrostatic separators; Electrostatics; Metal ions; Bentonite surface; Complex formations; Initial concentration; Interaction time; ITS applications; Natural bentonite; Optimum conditions; Synthesis and characterizations; Metals
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Mathematics and Natural Sciences > Chemistry Department
Depositing User: Sri JUNANDI
Date Deposited: 19 May 2025 08:26
Last Modified: 19 May 2025 08:26
URI: https://ir.lib.ugm.ac.id/id/eprint/17007

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