Adsorption of copper ions of natural montmorillonite clay

Pimneva, L. A.

doi:10.1051/matecconf/201710603008

Cited by 4 publications

(3 citation statements)

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“…As a result of comparing literature data with experimental results, it can be concluded that the static exchange capacity of the composite sorbent with respect to the manganese (II) cations is comparable to the capacity of natural sorbents [15][16][17][18][19] and is 0.9 mg/g.…”

Section: Experimental and Theoretical Research Resultsmentioning

confidence: 91%

Study of Sorption of Manganese (II) Cations by Composite Sorbent

Lebedeva

Lonzinger

Skotnikov

2020

MSF

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A significant increase in the amount of pollution (including heavy metals) that enter the hydrosphere as a result of human activity, sanitary requirements that are imposed on the quality of water, lead to the search for effective ways and methods of its purification. Wastewater from many industrial plants contain heavy metal salts, including manganese compounds. The sorption of manganese (II) cations by a composite sorbent from model solutions under static conditions was studied, to determine the possibility of using this sorption material in wastewater treatment. The characteristics of the sorption capacity of the composite sorbent are determined. It was established that the static exchange capacity of the composite sorbent is 0.9 mg/g; distribution coefficient - 47.34 l/g; the degree of purification of the solution is 99.9%. The empirical sorption equations for the manganese (II) cation are found, the sorption isotherms are constructed. It is established that the sorption process is described by the Freundlich equation. Experiments have shown that the composite sorbent is effective in extracting manganese (II) from aqueous solutions. Experimental data suggest that the sorbent studied can be used to clean industrial wastewater from manganese compounds.

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Section: Experimental and Theoretical Research Resultsmentioning

confidence: 91%

Study of Sorption of Manganese (II) Cations by Composite Sorbent

Lebedeva

Lonzinger

Skotnikov

2020

MSF

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“…The adsorption properties of such materials are not well-studied. Layered aluminosilicates with a developed adsorption surface are of particular interest [Pimneva 2017[Pimneva , 2018.…”

Section: )mentioning

confidence: 99%

Modification of Natural Clays for Use in the Processes of Sewage Treatment

Pimneva¹,

Zagorskaya²

2019

J. Ecol. Eng.

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The paper deals with the modification of clay sorbents in order to improve the efficiency of of copper ions extraction from wastewater. The study examined the elemental, mineralogical and phase composition of kaolin and montmorillonite clays. The authors analyzed the sorption capacity of natural sorbents under static conditions before and after modification with hydrochloric acid, sodium chloride and sodium hydroxide. The work also determines the change in the physical and chemical properties of the sorbent after modification. The most optimal modification conditions for the purification of wastewater from copper ions are distinguished.

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“…Recently, many works have been devoted to the use of layered hydrosilicates in various fields, including adsorption [1], catalysis [2] and the encapsulation of functional substances [3]. Hydrosilicates with the structure of imogolite [4], chrysotile [5,6] and halloysite [7] provided even more opportunities for such use due to their high specific surface area [8] and nanotubular morphology [9].…”

Section: Introductionmentioning

confidence: 99%

Formation of a 10 A phase with halloysite structure under hydrothermal conditions with varying initial chemical composition

Leonov¹,

Козлов²,

Kirilenko³

et al. 2023

Nanosystems: Phys. Chem. Math.

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We studied the process of obtaining nanostructured halloysite by varying the parameters for creating the initial composition. The initial composition was synthesized by co-hydrolysis of (C 3 H 7 O) 3 Al and (C 2 H 5 O) 4 Si in the C 6 H 14 -NH 3 •H 2 O system. Aluminum hydrosilicate with the composition Al 2 Si 2 O 5 (OH) 4 was synthesized under hydrothermal conditions (220 • C, 2 MPa, 96 h). Particles of plate-like morphology with average length 100 -200 nm and 60 nm thickness were obtained. The PXRD patterns revealed the presence of two phases. Plate-like kaolinites are found. Also we observed the formation of a halloysite-like phase. Studies of synthesized samples by IR spectroscopy and thermal analysis revealed the presence of organic-modified hydrosilicate with phase transition around 412 • C. The resulting phase is promising for studying the processes of adsorption and further exfoliation. KEYWORDS aluminum, hydrosilicates, hydrothermal synthesis, kaolinite, halloysite ACKNOWLEDGEMENTS The research was supported by the President of the Russian Federation grant MK-1962MK- .2021. STEM studies were carried out using the equipment of the JRC PMR IGIC RAS. TEM studies were partially performed in the Joint Research Center 'Materials science and characterization in advanced technology'. The XRPD and IR studies were performed using the equipment of the Engineering Centre of

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Adsorption of copper ions of natural montmorillonite clay

Cited by 4 publications

References 1 publication

Study of Sorption of Manganese (II) Cations by Composite Sorbent

Study of Sorption of Manganese (II) Cations by Composite Sorbent

Modification of Natural Clays for Use in the Processes of Sewage Treatment

Formation of a 10 A phase with halloysite structure under hydrothermal conditions with varying initial chemical composition

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