The study of thermal interaction and microstructure of sodium silicate/bentonite composite under microwave radiation

Subannajui, Kittitat

doi:10.1016/j.matchemphys.2016.09.061

Cited by 4 publications

(3 citation statements)

References 30 publications

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“…Hence, microwave-enhanced sorption is a promising area of research. However, the research efforts in this area are not extensive, and we were not able to find any other papers except the abovementioned works [8][9][10] related to microwave-enhanced adsorption. Furthermore, none of the papers reported the influence of microwave radiation on adsorption removal of copper or other heavy metals.…”

Section: P E T R O V Amentioning

confidence: 94%

“…The authors [9] explained the effect of microwave radiation by the increase of zeta potential of clay particles; as a result, the adsorption rate increases and separation of clay particles elevates. The microwave radiation caused microstructure changes in sodium silicate/bentonite composite [10]. Hence, microwave-enhanced sorption is a promising area of research.…”

Section: P E T R O V Amentioning

confidence: 99%

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Investigation of copper adsorption on natural and microwave-treated bentonite

Kontsur

Sysa

Петрова

2017

EEJET

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Section: P E T R O V Amentioning

confidence: 94%

Section: P E T R O V Amentioning

confidence: 99%

Investigation of copper adsorption on natural and microwave-treated bentonite

Kontsur

Sysa

Петрова

2017

EEJET

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“…Such investigations have been carried out on natural clays and on synthetic sorbents (activated carbon, ion exchange resins, etc.) [11][12][13][14][15][16][17][18]. According to Surendra and Foletto [14,16] irradiation of bentonite by microwave radiation leads to a change in the micropores distribution on the surface of the mineral.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Copper Ions by Microwave Treated Bentonite

Stepova¹,

Sysa

Kontsur

et al. 2020

Phys. Chem. Solid St.

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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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