Cesium and barium removal from aqueous solutions in the presence of humic acid and competing cations by a Greek bentonite from Kimolos Island

Noli, F.; Fedorcea, Victoria; Μisaelides, P.; Creţescu, Igor; Kapnisti, Maria

doi:10.1016/j.apradiso.2021.109600

Cited by 14 publications

(11 citation statements)

References 30 publications

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“…The bentonite used in this study was commercial (BENTOMINΕ KIMOLOS) from Kimolos island, Greece and the Zeolite from Petrota region in Thrace, Greece [9,19,29]. Both were in the form of grains with size less than 250 μm.…”

Section: Methodsmentioning

confidence: 99%

“…Their excellent adsorption and ion exchange properties as well as their selectivity towards several cations especially for radionuclides such as 137 Cs, 152 Eu, 60 Co etc. have received great attention in environmental technology [3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…Cesium mainly appears in aqueous solutions in cationic form exhibiting high mobility in soils and bioconcentration/bioaccumulation ability in the food chains. Though stable cesium isotopes are hardly affecting the human health, the uptake of its radioactive isotopes can cause, through their radiation, serious health disorders and even death [6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Concerning the Cs and Co-sorption by bentonites a significant number of articles has appeared and is still appearing in the literature [3][4][5][6][7][8][9][14][15][16][17][18]. The sorption of europium onto bentonites and zeolites is less investigated [19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

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The effect of irradiation on the Cs, Co and Eu-removal from aqueous solutions using Greek minerals

Dianellou

Karantoumanis

Tsamos

et al. 2023

J Radioanal Nucl Chem

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Sorption properties of Greek bentonites and zeolites were investigated in raw form and after irradiation for removal of Cs, Co and Eu from aqueous solutions using 137Cs, 60Co and 152Eu as tracers and γ-spectroscopy. The sorption experiments were undertaken under different conditions (pH, concentration, competitive ions and temperature). The structural changes of the sorbents due to irradiation and metal sorption were examined through XRD, FTIR and SEM/EDS. Sorption isotherms were reproduced by mathematical models and thermodynamic parameters were derived. The results showed that the sorption capacity was slightly affected by irradiation. The environmental compatibility tests proved the safe disposal of the investigated materials.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The effect of irradiation on the Cs, Co and Eu-removal from aqueous solutions using Greek minerals

Dianellou

Karantoumanis

Tsamos

et al. 2023

J Radioanal Nucl Chem

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“…It was shown that the Kimolos bentonite is a good sorbent for Cs and Ba from heavily contaminated solutions and its sorption capacity is reduced in the presence of humic acid and competing cations. The authors [10] showed that surface-functionalized magnetite nanoparticles treated with humic acid are a perspective sorbent for removing U(VI) from industrial waste streams and polluted water, but the eff ect of dissolved inorganic carbon on the mechanism and effi ciency of adsorption was studied insuffi ciently. It was found that the adsorption of U(VI) on humic acid-coated Fe 3 O 4 nanoparticles does not depend on the ionic strength, but increases with decreasing pH and adsorbent concentration.…”

mentioning

confidence: 99%

The use of brown coal in Ukraine to obtain water-soluble sorbents

Sinitsyna¹,

Karnozhitskiy²,

Мірошниченко³

et al. 2022

Nauk. visn. nat. hirn. univ.

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Purpose. To develop a method of using salts of humic acids obtained from brown coal of Ukraine for sorption of heavy metal ions and their extraction using ultrafiltration membranes. Methodology. Unique laboratory equipment has been developed to determine the sorption capacity of humic substances with a concentration of 0 to 20 mg/l in relation to heavy metal ions (Cu2+, Pb2+, Cd2+, Hg2+, Zn2+, Co2+) with a concentration of 5 mg/l. The results of proximate and ultimate analyzes, as well as infrared and optical emission spectroscopy were used to assess the quality of brown coal, humic substances and the solution of humic substances with heavy metal ions. Findings. Ukrainian brown coal of Oleksandriia geological-industrial district contains a large amount (about 80%) of humic acid, which is the basis for obtaining effective water-soluble sorbents. It is proved that humic substances obtained from brown coal of Ukraine allow binding up to 99% of heavy metal ions in complexes. The most optimal concentration of humic substances in terms of their concentration and selectivity of heavy metal ions extraction is 5 mg/l. Originality. The possibility of practical using of humic substances obtained from brown coal of Ukraine for sorption of heavy metal ions has been proved. As ultrafiltration membranes, UF-20-PAN membranes are used, which are porous polymer films based on polyacrylonitrile with a pore size of 20 m, the working surface area of the membrane is 28.26 10-4 m2. Practical value. The introduction of the developed technology will allow, firstly, restoring the practical use of large deposits of brown coal in Ukraine, and secondly, introducing deep treatment of industrial and wastewater.

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The effect of humic acid and competing cations Na+ and Ca2+ on the sorption of uranium and europium, onto bentonite from Kimolos Island (Greece)

Noli

Papalanis

Tsamos

et al. 2021

J Radioanal Nucl Chem

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Cesium and barium removal from aqueous solutions in the presence of humic acid and competing cations by a Greek bentonite from Kimolos Island

Cited by 14 publications

References 30 publications

The effect of irradiation on the Cs, Co and Eu-removal from aqueous solutions using Greek minerals

The effect of irradiation on the Cs, Co and Eu-removal from aqueous solutions using Greek minerals

The use of brown coal in Ukraine to obtain water-soluble sorbents

The effect of humic acid and competing cations Na+ and Ca2+ on the sorption of uranium and europium, onto bentonite from Kimolos Island (Greece)

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