Articles with "chromium ions" as a keyword



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Electric Field-Assisted Uptake of Hexavalent Chromium Ions with In Situ Regeneration of Carbon Monolith Adsorbents.

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Published in 2023 at "Advanced science"

DOI: 10.1002/advs.202301419

Abstract: The uptake of hexavalent chromium (Cr(VI)) ions from wastewater is of great significance for environmental remediation and resource utilization. In this study, a self-designed instrument equipped with an oxidized mesoporous carbon monolith (o-MCM) as an… read more here.

Keywords: electric field; carbon; hexavalent chromium; uptake hexavalent ... See more keywords
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Magnetic cation exchange membrane incorporated with cobalt ferrite nanoparticles for chromium ions removal via electrodialysis

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Published in 2019 at "Journal of Membrane Science"

DOI: 10.1016/j.memsci.2019.04.069

Abstract: Abstract A new type of magnetic mixed matrix cation exchange membrane was prepared by incorporating cobalt ferrite nanoparticles for chromium ions removal via electrodialysis. The CoFe2O4 nanoparticles were synthesized via a simple chemical precipitation method.… read more here.

Keywords: exchange; chromium ions; cobalt ferrite; membrane ... See more keywords
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Efficient and selective sequestration of perfluorinated compounds and hexavalent chromium ions using a multifunctional spinel matrix decorated carbon backbone N-rich polymer and their mechanistic investigations

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Published in 2021 at "Journal of Molecular Liquids"

DOI: 10.1016/j.molliq.2021.115336

Abstract: Abstract The removal of emerging contaminants including heavy metals and perfluorinated compounds has been an increasing concern globally due to their harmful effects on human health and other creatures in the environment. Mixtures of perfluorinated… read more here.

Keywords: hexavalent chromium; pani; chromium ions; perfluorinated compounds ... See more keywords
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Magnetic nanostructures for preconcentration, speciation and determination of chromium ions: A review.

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Published in 2019 at "Talanta"

DOI: 10.1016/j.talanta.2019.05.061

Abstract: Magnetic nanoparticles based solid-phase extraction is a new analytical technique based on the use of magnetic sorbents for the preconcentration and quantification of different inorganic and organic species. The present review concentrates on recent developments… read more here.

Keywords: chromium ions; preconcentration; speciation; magnetic nanostructures ... See more keywords
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Revisiting Y3Al5-xGaxO12 Solid Solutions Doped with Chromium Ions: Effect of Local Symmetry on Thermal Quenching of Cr3+ and Cr4+ Ions

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Published in 2023 at "ECS Journal of Solid State Science and Technology"

DOI: 10.1149/2162-8777/acd80e

Abstract: The oxidation of chromium ions to the 4+ state in phosphors doped with Cr3+ ions is often considered negative due to the activation of the parasitic Cr3+→Cr4+ luminescence quenching channel. Here, we report on a… read more here.

Keywords: cr4 ions; cr4; cr3 cr4; chromium ions ... See more keywords
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Granulation of Nickel–Aluminum–Zirconium Complex Hydroxide Using Colloidal Silica for Adsorption of Chromium(VI) Ions from the Liquid Phase

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Published in 2022 at "Molecules"

DOI: 10.3390/molecules27082392

Abstract: We combined a nickel–aluminum–zirconium complex hydroxide (NAZ) with colloidal silica as a binder to prepare a granulated agent for adsorbing heavy metals from aqueous media. Three samples with different particle diameters were prepared to evaluate… read more here.

Keywords: chromium ions; adsorption; zirconium complex; nickel aluminum ... See more keywords
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Efficient Adsorption of Chromium Ions from Aqueous Solutions by Plant-Derived Silica

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Published in 2022 at "Molecules"

DOI: 10.3390/molecules27134171

Abstract: Nowadays, there is great interest in the use of plant waste to obtain materials for environmental protection. In this study, silica powders were prepared with a simple and low-cost procedure from biomass materials such as… read more here.

Keywords: efficient adsorption; derived silica; chromium ions; plant ... See more keywords