Browsing by Subject "Adsorption"
Now showing items 21-40 of 57
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Equilibrium ion exchange studies of Zn2+, Cr3+, and Mn2+ on natural bentonite
(2016)Bentonite is a clay mineral often used in ion exchange processes due to its high ion exchange capacity. In the present study, a commercially available in Greece market bentonite was obtained and characterized by XRD, XRF, ...
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Europium removal from aqueous solutions by oxidized biochar prepared from waste palm tree fronds
(Elsevier, 2023)Palm oil is a product of major economic importance worldwide however, palm tree cultivation generates large quantities of palm fronds as waste. In this work, the sorption of Eu3+ from aqueous solutions by oxidized biochar ...
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Evaluation of electrospun polymer-Fe3O4 nanocomposite mats in malachite green adsorption
(2015)Magnetoactive nanocomposite fibers, based on poly(ethylene oxide) (PEO), poly(l-lactide) (PLLA) and pre-formed oleic acid-coated magnetite nanoparticles (OA·Fe3O4), were fabricated by electrospinning and evaluated for the ...
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Evaluation of novel, cationic electrospun microfibrous membranes as adsorbents in bacteria removal
(2015)Electrospun microfibrous membranes comprised of poly(methyl methacrylate)-poly((2-diethylamino)ethyl methacrylate) random copolymers (PMMA-co-PDEAEMA) of various chemical compositions blended together with a commercially ...
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Evaluation of novel, cationic electrospun microfibrous membranes as adsorbents in bacteria removal
(2015)Electrospun microfibrous membranes comprised of poly(methyl methacrylate)-poly((2-diethylamino)ethyl methacrylate) random copolymers (PMMA-co-PDEAEMA) of various chemical compositions blended together with a commercially ...
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Few-layer graphene-like flakes derived by plasma treatment: A potential material for hydrogen adsorption and storage
(2016)A novel, one-step, wet-free, environmental friendly and high-yield method for producing few-layer graphene powders with large surface areas (up to 800 m2/g) and narrow nanopore sizes (0.7-0.8 nm) using plasma-induced ...
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Industrial NOx control via H2-SCR on a novel supported-Pt nanocatalyst
(2011)We describe here the performance of a novel MgO-CeO2-supported Pt nanocatalyst (∼1.5nm mean Pt particle size) towards the selective conversion of NO (XNO>90%) into N2 (SN2>80%) using H2 (H2-SCR) in the low-temperature range ...
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The ion-lipid battle for hydration water and interfacial sites at soft-matter interfaces
(2014)At charged surfaces "bound" ions reduce the repulsive electrostatic forces, while dissociated ions control the osmotic pressure in colloidal systems. For systems charged through ionic adsorption on the other hand, the ...
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Magnetoresponsive polymer networks as adsorbents for the removal of U(VI) ions from aqueous media
(2017)Magnetoresponsive, methacrylate-based 3D polymer networks containing hydrophilic/thermoresponsive, hydrophilic/pH-responsive and hydrophobic/metal chelating functionalities and oleic acid-coated magnetite nanoparticles, ...
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Microplastics and disposable face masks as “Trojan Horse” for radionuclides pollution in water bodies – A review with emphasis on the involved interactions
(Elsevier, 2023)This review article focuses on the interaction of radionuclides (americium-241, uranium-232, radium-226, neptunium-237, cesium-137, iodine-125, strontium-90, thorium-234, and potassium-40) with different microplastics ...
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N2O decomposition over ceria-promoted Ir/Al2O3 catalysts: The role of ceria
(2016)The impact of CeO2 in the Al2O3-20wt% CeO2 support prepared by the co-precipitation method on the Ir particle size, morphology and oxidation state, and in turn on the deN2O catalytic activity (1000ppmN2O) of supported Ir ...
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Nanoporous activated carbon cloth as a versatile material for hydrogen adsorption, selective gas separation and electrochemical energy storage
(2017)The efficient storage of energy combined with a minimum carbon footprint is still considered one of the major challenges towards the transition to a progressive, sustainable and environmental friendly society on a global ...
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Novel Zn-Ti-based mixed metal oxides for low-temperature adsorption of H2S from industrial gas streams
(2005)The efficiency of various Zn-Ti-based mixed metal oxides prepared by the sol-gel method towards H2S adsorption from a gas mixture containing 0.06 vol.% H2S, 25 vol.% H2, 7.5 vol.% CO2 and 1 vol.% H2O was studied in the ...
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Polymers prepared using cleavable initiators: Synthesis, characterization and degradation
(2011)Following the great interest in polymers based on degradable monomers and degradable cross-linkers, there is now an increasing activity in the controlled synthesis of polymers using degradable initiators. The degradation ...
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Preparation and characterization of a cerium(IV)-incorporated manganese oxide OMS-2. Effect of cerium(IV) template on octahedral molecular sieves of manganese oxide and characterization of manganese oxide molecular sieves with cerium(IV) as dopant
(2008)The manganese oxide material K-OMS-2 was synthesized both via a redox reaction between potassium permanganate and manganese nitrate in an acidic medium (nitric acid) under reflux conditions and by the sol-gel reaction ...
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Preparation and characterization of nanoporous ceria containing heteroatoms, with and without a matrix
(2005)We have been interested in the synthesis and study of porous ceria, because of its importance in several catalytic applications, and notably in automobile exhaust catalysts. The mesoporosity of these solids is susceptible ...
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Radium removal from aqueous solutions by adsorption on non-treated and chemically modified biomass by-product
(2013)The adsorption efficiency of a biomass by-product (olive cake) regarding the removal of radium (226Ra) from aqueous solutions has been investigated prior and after its chemical treatment. The chemical treatment of the ...
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Regeneration of three-way automobile catalysts using biodegradable metal chelating agent-S, S-ethylenediamine disuccinic acid (S, S-EDDS)
(2011)Regeneration of the activity of three-way catalytic converters (TWCs) was tested for the first time using a biodegradable metal chelating agent (S, S-ethylenediamine disuccinic acid (S, S-EDDS). The efficiency of this novel ...
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Removal of 241Am from Aqueous Solutions by Adsorption on Sponge Gourd Biochar
(MDPI, 2023)Luffa cylindrica biomass was converted to biochar and the removal of 241Am by pristine and oxidized biochar fibers was investigated in laboratory and environmental water samples. This species has the added advantage of a ...
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Removal of trivalent samarium from aqueous solutions by activated biochar derived from cactus fibres
(2016)The efficiency of activated biochar fibres obtained from Opuntia Ficus Indica regarding the sorption of trivalent samarium (Sm(III)) from aqueous solutions was investigated by batch experiments. The effect of various ...