Browsing by Subject "Aqueous solutions"

Article

Adsorption of hexavalent chromium on dunite

Demetriou, Antri; Pashalidis, Ioannis (2011)

The paper presents and discusses the effect of various physicochemical parameters (e.g. pH, ionic strength, Cr(VI) initial concentration, amount of the adsorbent, temperature and contact time between metal ion and adsorbent) ...

Article

Alternating amphiphilic multiblock copolymers: Controlled synthesis via RAFT polymerization and aqueous solution characterization

Hadjiantoniou, N. A.; Krasia-Christoforou, T.; Loizou, E.; Porcar, L.; Patrickios, C. S. (2010)

Four linear amphiphilic multiblock copolymers based on 2-(dimethylamino) ethyl methacrylate (DMAEMA, hydrophilic) and methyl methacrylate (MMA, hydrophobic), bearing from two to five blocks, were synthesized using reversible ...

Article

Alternating amphiphilic multiblock copolymers: Controlled synthesis via RAFT polymerization and aqueous solution characterization

Hadjiantoniou, Natalie A.; Krasia‐Christoforou, Theodora; Loizou, Elena; Porcar, L.; Patrickios, Costas S. (2010)

Four linear amphiphilic multiblock copolymers based on 2-(dimethylamino) ethyl methacrylate (DMAEMA, hydrophilic) and methyl methacrylate (MMA, hydrophobic), bearing from two to five blocks, were synthesized using reversible ...

Article

Application of different types of resins in the radiometric determination of uranium in waters

Kyriakou, M.; Pashalidis, Ioannis (2011)

The aim of this study is to compare different resins regarding their separation and pre-concentration efficiency for uranium from aqueous solutions and its subsequent radiometric determination by liquid scintillation ...

Article

Competitive sorption of Cu(II) and Eu(III) ions on olive-cake carbon in aqueous solutions - A potentiometric study

Konstantinou, M.; Pashalidis, Ioannis (2010)

The competitive sorption of Cu(II) and Eu(III) ions from aqueous solutions by olive-cake carbon, has been investigated by potentiometry at pH 6, I = 0.1 M NaClO4, 25°C and under normal atmospheric conditions. Evaluation ...

Article

Competitive sorption of Cu(II), Eu(III) and U(VI) ions on dunite in aqueous solutions: A potentiometric study

Konstantinou, M.; Pashalidis, Ioannis (2010)

The competitive sorption of Cu(II), Eu(III) and U(VI)) ions in aqueous solutions by dunite, has been investigated by potentiometry at pH 6, I = 0.1 M NaClO4 and 25°C. Numerical analysis of the experimental data supports ...

Article

Copper Binding by Activated Biochar Fibres Derived from Luffa cylindrica

Liatsou, Ioanna; Constantinou, P.; Pashalidis, Ioannis (2017)

The adsorption of copper (Cu(II)) from aqueous solutions by activated Luffa cylindrica biochar fibres has been investigated by means of batch equilibrium experiments and FTIR spectroscopy. The effect of various physicochemical ...

Article

Hydrophilic cationic star homopolymers based on a novel diethanol-n-methylamine dimethacrylate cross-linker for sirna transfection: Synthesis, characterization, and evaluation

Pafiti, Kyriaki S.; Mastroyiannopoulos, Nikolaos P.; Phylactou, Leonidas A.; Patrickios, Costas S. (2011)

Four cationic hydrophilic star homopolymers based on the novel hydrophilic, positively ionizable cross-linker bis(methacryloyloxyethyl)methylamine (BMEMA) were synthesized using sequential group transfer polymerization ...

Article

Hydrophilic olive cake extracts: Characterization by physicochemical properties and Cu(II) complexation

Kolokassidou, K.; Szymczak, W.; Wolf, M.; Obermeier, C.; Buckau, G.; Pashalidis, Ioannis (2009)

Disposed olive cake generates hydrophilic components that can be mobilized in the aquatic environment. This paper deals with the characterization of such components, isolated by alkaline extraction. It is shown that these ...

Article

Reversible hydrogels from amphiphilic polyelectrolyte model multiblock copolymers: The importance of macromolecular topology

Popescu, M. -T; Athanasoulias, I.; Tsitsilianis, C.; Hadjiantoniou, Natalie A.; Patrickios, Costas S. (2010)

The association ability of model amphiphilic polyelectrolytes with multi-block architecture, i.e. ABA, BABAB, ABABABA and BABABABAB (A hydrophobic, B polyelectrolyte block) was studied in aqueous media. The gelation ...

Article

Selective separation of radium and uranium from aqueous solutions by Chelex-100

Kiliari, T.; Pashalidis, Ioannis; Symeopoulos, B. D. (2012)

The affinity of Chelex-100 for radium has been investigated as a function of pH and salinity compared to the Chelex-100 affinity for uranium to assess possible application of the resin for the selective separation of the ...

Article

Solar/TiO^sub 2^ photocatalytic decomposition of [Beta]-blockers atenolol and propranolol in water and wastewater

Ioannou, L. A.; Hapeshi, E.; Vasquez, M. I.; Mantzavinos, D.; Fatta-Kassinos, Despo (2011)

The photocatalytic conversion of two &beta

Article

Stabilization of lead sulfide nanoparticles by polyamines in aqueous solutions. A structural study of the dispersions

Koupanou, E.; Ahualli, S.; Glatter, O.; Delgado, A.; Krumeich, F.; Leontidis, Epameinondas (2010)

Lead sulfide (PbS) nanoparticles have been synthesized in aqueous solutions by a reaction between inorganic lead salts and sodium sulfide and stabilized using the cationic polyelectrolytes branched poly(ethylenimine) (PEI), ...

Article

Studies on the interaction of olive cake and its hydrophylic extracts with polyvalent metal ions (Cu(II), Eu(III)) in aqueous solutions

Konstantinou, M.; Kolokassidou, K.; Pashalidis, Ioannis (2009)

The paper presents and discusses the chemical affinity of two different forms of natural organic matter (e.g. in solid (SOM) and soluble form (DOM)) for Cu2+ and Eu3+ ions. In the this study SOM is represented by olive ...

Article

Synthesis, structure, magnetic properties and aqueous solution characterization of p-hydroquinone and phenol iminodiacetate copper(ii) complexes

Stylianou, M.; Drouza, C.; Viskadourakis, Z.; Giapintzakis, John; Keramidas, A. D. (2008)

The reaction of Cu2+ acetate monohydrate with 2-[N,N′-bis(carboxymethyl)aminomethyl]-4-carboxyphenol (H 4cacp), 2-[N,N-bis(carboxymethyl)aminomethyl]hydroquinone (H 4cah) and the dinucleating 2,5-bis[N,N-bis(carboxymethy ...

Article

Synthesis, structure, magnetic properties and aqueous solution characterization of p-hydroquinone and phenol iminodiacetate copper(ii) complexes

Stylianou, Marios; Drouza, Chryssoula; Viskadourakis, Zacharias A.; Giapintzakis, Ioannis; Keramidas, Anastasios D. (2008)

The reaction of Cu2+ acetate monohydrate with 2-[N,N′-bis(carboxymethyl)aminomethyl]-4-carboxyphenol (H 4cacp), 2-[N,N-bis(carboxymethyl)aminomethyl]hydroquinone (H 4cah) and the dinucleating 2,5-bis[N,N-bis(carboxymethy ...

Article

Thorium determination in water samples by liquid scintillation counting after its separation by cloud point extraction

Constantinou, Eleni; Pashalidis, Ioannis (2011)

The aim of this study is the separation and pre-concentration of thorium from aqueous solutions by cloud point extraction (CPE) and its the radiometric determination by liquid scintillation counting (LSC). For CPE, tributyl ...

Article

Uranium determination in water samples by liquid scintillation counting after cloud point extraction

Constantinou, Eleni; Pashalidis, Ioannis (2010)

The aim of this study is the radiometric determination of uranium in waters by liquid scintillation counting (LSC) after pre-concentration of the element by cloud point extraction (CPE). For CPE, tributyl phosphate (TBP) ...