Effective Purification of Water from Iron Ions and Potentially Pathogenic Microorganisms Using a Montmorillonite Composite Sorbent

Vezentsev, A. I.; Peristiy, V. A.; Bukhanov, V. D.; Peristaya, L. F.; Sokolovskiy, P. V.; Roessner, F.; Mikhailyukova, Mariya О.; Greish, A. A.

doi:10.1134/s0036024418090339

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…Bentonites usually contain clay minerals (predominantly montmorillonite and secondarily kaolinite and illite), cristobalite, carbonates, zeolites, iron oxides and hydroxides, and relics of quartz and feldspar. They are widely used in their native forms, or after refinement, purification, or activation in many areas, because of high absorption rates displayed towards water or organic compounds, high cation exchange capacity and protein sedimentation properties [1][2][3][4]. The name bentonite was proposed for the first time for the cretaceous clays found in the formations from Benton, Wyoming, USA by Knight [5].…”

Section: Introductionmentioning

confidence: 99%

Mineralogical and Physico-Chemical Characterization of the Oraşu-Nou (Romania) Bentonite Resources

Damian

Szakács

et al. 2021

Minerals

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The objective of this study is to describe the mineralogical composition and chemical properties of the Oraşu Nou bentonite, from northwestern Romania. For mineralogical determinations, the following were used: X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FR-IR), thermogravimetric analysis, scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM-EDX). The chemical compositions and physical properties of the bentonites and bentonitized rocks were also determined. Calcium type montmorillonite is the predominant mineral in this deposit. Its average mass fraction is between 35% and 75%, reaching up to 95%. A small amount of halloysite and very fine cristobalite were also identified in the fine fraction. Quartz, feldspar, and kaolinite were identified as impurities. The average pH of natural bentonite is 6.2. Its cation exchange capacity (CEC) is in the lower-middle range for smectites at 45.89 cmol/kg, absorption capacity 43.58 mL/g, swelling degree 9.41%. Because of the high amounts and purity of montmorillonite, the valuable component mineral, the way is open to an easy refinement of this important resource. This way very high-quality colloidal suspensions can be obtained which can be used in the most modern applications of micro- and nanostructured materials.

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Section: Introductionmentioning

confidence: 99%

Mineralogical and Physico-Chemical Characterization of the Oraşu-Nou (Romania) Bentonite Resources

Damian

Szakács

et al. 2021

Minerals

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“…В последние годы проводятся исследования, направленные на очистку воды и почвы от соединений тяжелых металлов с использованием не только традиционных, хорошо известных сорбентов, таких как активные угли, но и доступных природных материаловминеральных алюмосиликатных адсорбентов (глины, цеолитсодержащие породы и т.д.) [5][6][7][8][9][10].…”

Section: Introductionunclassified

Исследование Сорбционных Свойств Природных Монтмориллонитовых Глин Разных Месторождений Для Очистки Воды От Ионов Свинца (II)

Vezentsev¹,

Перистая²,

Нгуен³

et al. 2018

sorpchrom

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Представлены результаты исследования сорбционных характеристик природных глин месторождения «Поляна», проявления «Нелидовка» Белгородской области (Россия) и месторождения «Там Бо» (Вьетнам). Изучена кинетика процесса сорбции. Исследован гранулометрический состав глины месторождения «Поляна» и изучено его влияние на сорбционную способность. Установлено, что сорбция ионов Pb (II) на глинах подчиняется модели мономолекулярной адсорбции Ленгмюра. Глина месторождения «Поляна» является наиболее эффективным сорбентом среди указанных глин

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“…The earlier studies showed a high effi ciency of water purifi cation using adsorbents based on bentonite clays. [2][3][4][5][6][7][8][9] The data on high effi ciency of clays in radionuclide removal were published. 10,11 Montmorillonite is effi ciently applied as a sorbent of heavy metals.…”

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On the adsorption mechanism of copper ions on bentonite clay

et al. 2022

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The adsorption of copper ions on bentonite clay was studied as a function of the pH of the medium, contact time, and temperature. A comparative study of the applicability of the Langmuir and Freindlich adsorption models for the description of the experimental adsorption isotherms of Cu 2+ was carried out. The constants and parameters of the equations describing the adsorption equilibrium were determined. The correlation coeffi cients (R 2 ) indicate that both models satisfactorily outline the sorption process. However, the Langmuir adsorption isotherm is more preferable for describing adsorption of Cu 2+ ions on bentonite clay, since it allows one to determine the limiting adsorption capacity. The adsorption of Cu 2+ ions on bentonite clay increases as the temperature increases from 293 to 333 K. At the same time, the shape of the adsorption isotherms remains unchanged.

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Effective Purification of Water from Iron Ions and Potentially Pathogenic Microorganisms Using a Montmorillonite Composite Sorbent

Cited by 3 publications

References 10 publications

Mineralogical and Physico-Chemical Characterization of the Oraşu-Nou (Romania) Bentonite Resources

Mineralogical and Physico-Chemical Characterization of the Oraşu-Nou (Romania) Bentonite Resources

Исследование Сорбционных Свойств Природных Монтмориллонитовых Глин Разных Месторождений Для Очистки Воды От Ионов Свинца (II)

On the adsorption mechanism of copper ions on bentonite clay

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