Uptake of Ce(III) and Ce(IV) on montmorillonite

Klika, Zdeněk; Seidlerová, Jana; Valášková, Marta; Kliková, Christiana; Kolomazník, Ivan

doi:10.1016/j.clay.2016.05.012

Cited by 16 publications

(6 citation statements)

References 49 publications

(55 reference statements)

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“…Often, cation substitution of the interlayer space leads to a charge imbalance, thus increases the ability of clay to attract cations to its negative charged sites. Most of the surface-adsorbed lanthanides occur as simple "clay-REE" species or as hydrolyzed "clay-O-REE 2+ " species, therefore these lanthanides are exchangeable (Moldoveanu and Papangelakis, 2012;Moldoveanu and Papangelakis, 2013;Klika et al, 2016). When comparing between nitric acid and acetic acid, we selected montmorillonite to represent contamination from clay.…”

Section: Montmorillonitementioning

confidence: 99%

What do Ce anomalies in marine carbonates really mean? A perspective from leaching experiments

et al. 2020

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Section: Montmorillonitementioning

confidence: 99%

What do Ce anomalies in marine carbonates really mean? A perspective from leaching experiments

et al. 2020

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“…The CEC of VER was determined using repeated ion exchange with Cd(II) ions, then saturated clay was separated by microfilter and washed out by deionized water. Ion exchanged Cd(II) was dissolved in HNO 3 and determined by AES‐ICP 29 . The chemicals used for the sample preparation were ciclopirox olamine (abbreviated CPA) and ethanol as a solvent.…”

Section: Methodsmentioning

confidence: 99%

“…Ion exchanged Cd(II) was dissolved in HNO 3 and determined by AES-ICP. 29 The chemicals used for the sample preparation were ciclopirox olamine (abbreviated CPA) and ethanol as a solvent. Powdered and granulated mixture of the industrial low-density polyethylene (abbreviated LDPE, Bralen RB 2-62L, SlovnaftCo., Slovak Republic) without additives was used as a starting material for preparation of polymer nanocomposite matrix.…”

Section: Methodsmentioning

confidence: 99%

Novel LDPE/vermiculite/ciclopiroxolamine hybrid nanocomposites: Structure, surface properties, and antifungal activity

Holešová

Barabaszová

Hundáková

et al. 2020

J of Applied Polymer Sci

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The increasing number of indwelling medical materials and devices are connected with infections caused by yeast, especially Candida albicans. This pathogen produces biofilms on synthetic materials, which facilitates adhesion of the organisms to devices and renders them relatively refractory to medical therapy. Since antimicrobial polymer nanocomposites present one of the promising possibilities, this study explores a new approach to achieving this goal by developing nanocomposite based on low density polyethylene (LDPE) with clay mineral vermiculite as an active carrier for antifungal compound. The set of LDPE/clay nanocomposite with increasing amount of antifungal nanofiller was prepared by melt compounding procedure. As antifungal agent was selected generally used active substance ciclopiroxolamine and this compound was loaded into natural vermiculite through ultrasound technique. The structure of all prepared samples was studied by X‐ray diffraction analysis and Fourier transforms infrared spectroscopy. Further thermal properties of polyethylene/clay nanocomposites were investigated by thermogravimetric analysis and the surface properties were evaluated by light optical microscopy, scanning electron microscopy and atomic force microscopy. From mentioned characteristics, we conclude that presence of nanofiller in LDPE primarily causes shift of thermal degradation to higher temperatures and increasing of microhardness. All prepared LDPE nanocomposites possess an excellent and prolonged antifungal activity against Candida albicans.

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“…Development of magnetized magnetic biosorbents is of importance for more efficient and easier separation in the sorption process, since the active surface of the magnetite particles attached to the polymeric structure and becomes an important adsorbent to remove heavy metals (Khorasani and Shojaosadati 2019). For sorption of cerium (III) from aqueous solutions, most researchers have used different materials, natural, organic and inorganic; Platanus orientalis leaf powder (Ser et al 2008), montmorillonite (Klika et al 2016), ferric oxide (Dubey and Rao 2011), tangerine (Citrus reticulate) peel (Torab-Mostaedi, 2013), granulated zeolites (Suboti and Bronic1986) and Brown Marine Alga . To the best of our knowledge, the study is the first to show that a magnetic nanocomposite of olive pomace and magnetite is used to adsorb cerium ions from aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Sorption of Ce(III) on magnetic/olive pomace nanocomposite: isotherm, kinetic and thermodynamic studies

Akbas

Yuşan

Sert

et al. 2021

Environ Sci Pollut Res

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Used for various high-tech applications, cerium is an important rare earth element (REE) and its sorption on various solids also important considering purification, environmental and radioactive waste disposal, In view of the industrial and environmental terms, it is important to remove Ce 3+ ions from an aqueous solution. Magnetite and magnetic olive pomace nanocomposite were thus fabricated by a partial reduction co-precipitation approach.The structure and morphological properties of the prepared nano-material and nanocomposite were characterized by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-Ray diffraction (XRD), Fourier transform infrared spectrometry (FT-IR), Vibrating Sample Magnetometry (VSM) and BET surface area analysis. The effects of parameters such as solution pH, contact time, initial Ce(III) concentration and temperature on the sorption efficiency were studied. The maximum sorption capacities of the magnetite (MNP) and magnetic olive pomace nanocomposite (MOP) for Ce(III) ions were found to be 76.92 and 90.90 mgg -1 , respectively. The sorption data fitted well with Dubinin-Radushkevich isotherm model and the pseudo-second order kinetic model. Thermodynamic parameters indicated that the sorption was non-spontaneous and endothermic. The present study introduced MNP and MOP as efficient, sustainable adsorbents alternative to commercial ones in wastewater treatment.

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Uptake of Ce(III) and Ce(IV) on montmorillonite

Cited by 16 publications

References 49 publications

What do Ce anomalies in marine carbonates really mean? A perspective from leaching experiments

What do Ce anomalies in marine carbonates really mean? A perspective from leaching experiments

Novel LDPE/vermiculite/ciclopiroxolamine hybrid nanocomposites: Structure, surface properties, and antifungal activity

Sorption of Ce(III) on magnetic/olive pomace nanocomposite: isotherm, kinetic and thermodynamic studies

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