Adsorption of Copper Ions by Microwave Treated Bentonite

K. Stepova et al · Vasyl Stefanyk Carpathian National University · 2020

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Author / responsible party

K. Stepova et al

Publisher

Vasyl Stefanyk Carpathian National University

Year

2020

ISSN

1729-4428

ISSN

1729-4428

Language

English

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Changes of bentonite surface structure under the influence of direct microwave irradiation during adsorpion of Cu2+ from concentrated solutions were investigated by X-ray and EDS analysis. The microwave treated bentonite (MTB) has been proved to have enhanced adsorption capacity for copper due to improved pore structure and some peculiarities of adsorption mechanism. The non-linear fitting of experimental data to the theoretical isotherms have demonstrated that the adsorption on natural bentonite fitted the Toth model, whilst microwave-treated bentonite fitted the Langmur-Freundlich model. The isotherm modeling allowed predicting the maximal adsorption capacities 44.8 mg/g. XRD and SEM analysis of MTB sample after adsorption indicated formation of microcrystals of individual copper compound. The adsorption on MTB sample takes place not only in pores or in monomolecular layer on the bentonite surface, but the prevalent mechanism is surface-induced co-precipitation of copper as microcrystals of individual copper compound.

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APA 7

al, K. S. E. (2020). Adsorption of Copper Ions by Microwave Treated Bentonite. https://doi.org/10.15330/pcss.21.3.537-544

MLA

al, K. Stepova et. "Adsorption of Copper Ions by Microwave Treated Bentonite." 2020. https://doi.org/10.15330/pcss.21.3.537-544.

Chicago

al, K. Stepova et. 2020. "Adsorption of Copper Ions by Microwave Treated Bentonite.". https://doi.org/10.15330/pcss.21.3.537-544.

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al, K. S. E. 2020, Adsorption of Copper Ions by Microwave Treated Bentonite, Vasyl Stefanyk Carpathian National University, available at: https://doi.org/10.15330/pcss.21.3.537-544 [Accessed 7 Aug. 2026].

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Title: Adsorption of Copper Ions by Microwave Treated Bentonite

Author / contributors: K. Stepova et al

Publisher: Vasyl Stefanyk Carpathian National University

Publication year: 2020

ISSN: 1729-4428

ISSN: 1729-4428

Language: English

Subjects

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bentonite; microwave; adsorption; copper; non-linear fitting