Comparative study of cesium adsorption on dioctahedral and trioctahedral smectites

Galamboš, Michal; Magula, M.; Daňo, Martin; Osacký, Marek; Rosskopfová, O.; Rajec, P.

doi:10.1007/s10967-012-1741-y

Cited by 22 publications

(8 citation statements)

References 64 publications

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“…The value micropore volume V micro is lower for BM1 and BM2, probably due to restrained access of the nitrogen molecules into some of micropores filled by the agglomerated iron oxide nanoparticles. The mesoporous character of the studied sample was also confirmed by the pore size distribution curves, 16. 71…”

Section: Tetrahedral and Octahedral Position Of Trivalent Iron In Magmentioning

confidence: 66%

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BENTONITE/IRON OXIDE MAGNETIC COMPOSITES: CHARACTERIZATION AND APPLICATION AS Pb(II) ADSORBENTS

Danková¹,

Fedorová²,

Bekényiová³

2017

AFST

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The natural clay bentonite (B) as adsorbent of lead cations was studied. To enhance its adsorption capacity, the coating by iron oxide particles, in two selected weight ratios: 2:1 (BM1) and 4:1(BM2), was used. The changes of the textural and surface parameters after the modification were studied by the low temperature nitrogen adsorption, XRD and SEM method, Mössbauer spectroscopy. The Pb(II) adsorption experiments were studied under the different conditions, such as pH of the model solutions, contact time and initial metal ion concentration. Higher adsorption rates of BM1 and BM2 samples were observed for lower initial metal ion concentrations.

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Section: Tetrahedral and Octahedral Position Of Trivalent Iron In Magmentioning

confidence: 66%

“…The suspensions were subsequently filtered using the filter paper, and the supernatant solutions were analyzed by the atomic absorption spectroscopy (AAS, Varian 240 RS/2400). 16. 67…”

Section: Methodsmentioning

confidence: 99%

BENTONITE/IRON OXIDE MAGNETIC COMPOSITES: CHARACTERIZATION AND APPLICATION AS Pb(II) ADSORBENTS

Danková¹,

Fedorová²,

Bekényiová³

2017

AFST

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“…There are few significant deposits of bentonite in the East part of Slovakia (Kuzmice, Fintice, Lastovce) as well as in Central Slovakia (Stará Kremnička -Jelšový potok and Lieskovec). These bentonites are used for industrial purposes, and their geological, geotechnical and sorption properties are still studied by Slovak researchers for their wider utilisation [6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Experimental study of As(V) adsorption onto different adsorbents

Danková¹,

Bekényiová²,

Lukáčová-Bujňáková³

et al. 2019

chemija

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The As(V) adsorption onto natural bentonite (B), Fe enriched bentonite (FB) and synthetic magnetic particles (MP) from the aqueous solutions was investigated by batch as well as column tests. The natural materials did not show such good adsorption properties towards As(V) in the batch experiments as MP, whose Qmax was calculated to 23 mg/g. However, in column experiments the adsorption effect of natural materials was comparable with MP. The model solution with the concentration 30 mg As(V)/L was percolated through the columns filled with the B and FB sample. After two cycles the As(V) concentration was lower than 2 mg/L. The second series of columns were filled with FB/MP/QS and B/MP/QS. Two cycles with the solution concentration of 50 and 100 mg As(V)/L were performed. After the second cycle 74 and 100% of As(V) were removed by FB/MP/QS and B/ MP/QS, respectively. In the third series two most effective columns were selected for the second percolation of 100 mg As(V)/L solution. While the adsorption effect of the QS/MP column decreased at 36%, for the QS/B/MP column it was about 24%. The first experimental study showed that natural materials should be used effectively as column fillers to fix finer magnetic particles. On the other hand, their selectivity towards Cu(II) and Zn(II) ions could be beneficial for regeneration of media used in the process of soil bioremediation.

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“…There are few significant deposits of bentonite in East part of Slovakia (Kuzmice, Fintice, Lastovce) as well as in Central Slovakia (Stará Kremnička -Jelšový potok and Lieskovec). These bentonites are used for industrial purposes, and their geological, geotechnical and sorption properties are still studied by Slovak researchers for their wider utilization [7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

STUDY OF Cu(II) ADSORPTION BY BENTONITE AND FOLLOWING REGENERATION BY BIOLEACHING

Danková¹,

Dakos²,

Štyriaková³

et al. 2018

AFST

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The natural bentonite and bentonite/iron oxide composite were used as sorbents of Cu(II). Theirsorption properties were examined under the different conditions such as pH of the solution, initialmetal ion concentration. The bentonite removed 71 % Cu(II) while composite 90 %. Their maximumadsorption capacities were 34.1 and 44.4 mg Cu(II) g-1, respectively. The chemical regeneration ofcomposite sorbent by organic acids (oxalic, citric) led to partial Cu(II) dissolution. The hydrochloricacid caused its structural destruction. For the bacterial regeneration, the sorbents were inoculated withheterotrophic indigenous bacteria. After 10 days the bacteria released approximately 80 % of loadedCu(II), leaving the sorbents stable. Longer treatment and higher concentration of metal cations causedthe reverse sorption of Cu(II) by bacteria. The regenerated sorbent was successfully repeatedly used forthe Cu(II) adsorption.

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Comparative study of cesium adsorption on dioctahedral and trioctahedral smectites

Cited by 22 publications

References 64 publications

BENTONITE/IRON OXIDE MAGNETIC COMPOSITES: CHARACTERIZATION AND APPLICATION AS Pb(II) ADSORBENTS

BENTONITE/IRON OXIDE MAGNETIC COMPOSITES: CHARACTERIZATION AND APPLICATION AS Pb(II) ADSORBENTS

Experimental study of As(V) adsorption onto different adsorbents

STUDY OF Cu(II) ADSORPTION BY BENTONITE AND FOLLOWING REGENERATION BY BIOLEACHING

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