Browsing by Author "Pashalidis, Ioannis"
Now showing items 1-20 of 125
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3D Composite U(VI) Adsorbents Based on Alginate Hydrogels and Oxidized Biochar Obtained from Luffa cylindrica
Ayiotis, Andreas; Georgiou, Efthalia; Ioannou, Panagiotis S.; Pashalidis, Ioannis; Krasia-Christoforou, Theodora (MDPI, 2023)3D naturally derived composites consisting of calcium alginate hydrogels (CA) and oxidized biochar obtained from Luffa cylindrica (ox-LC) were synthesized and further evaluated as adsorbents for the removal of U(VI) from ...
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Acid mine drainage treatment with dunite
Demetriou, Antri; Lysandrou, Michaela; Charalambides, Antonios; Pashalidis, Ioannis (2010)This paper reports the efficiency of dunite as an alternative alkalinity generating material and adsorbent for the passive treatment of acid mine drainage (AMD). The acid neutralization capacity (ANC) of dunite has been ...
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Activated biochar derived from cactus fibres - Preparation, characterization and application on Cu(II) removal from aqueous solutions
Hadjittofi, Loukia; Prodromou, Melpomeni; Pashalidis, Ioannis (2014)The adsorption efficiency of activated biochar prepared from cactus fibres regarding the removal of Cu(II) from aqueous solutions has been investigated as a function of various physicochemical parameters (e.g. pH, initial ...
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Adsorption of boron on iron-oxide in aqueous solutions
Demetriou, Antri; Pashalidis, Ioannis (2012)The adsorption of boron on iron-oxide (FeO(OH)) has been investigated in aqueous solutions as a function of pH, ionic strength, temperature, boron concentration and amount of the adsorbent. Analysis of the experimental ...
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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) ...
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Adsorption of hexavalent uranium on biomass by-product
Konstantinou, M.; Pashalidis, Ioannis (2007)The effectiveness of the uranium removal by olive cake from aqueous solutions has been demonstrated in batch type experiments under normal atmospheric conditions. The adsorption capacity has been evaluated by using both ...
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Adsorption of Reactive Red 120 Dye by Polyamide Nylon 6 Microplastics: Isotherm, Kinetic, and Thermodynamic Analysis
Afmataj, Desara; Kordera, Olympia; Maragkaki, Angeliki; Tzanakakis, Vasileios A.; Pashalidis, Ioannis; Kalderis, Dimitrios; Anastopoulos, Ioannis (MDPI, 2023)In this work, we investigated the effect of various adsorption parameters (solution pH, temperature, contact time, and the presence of phosphate and nitrate ions) on the adsorption of Reactive Red 120 (RR120) dye by Polyamide ...
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Adsorption of trivalent lanthanides by marine sediments
Liatsou, Ioanna; Efstathiou, Maria; Pashalidis, Ioannis (2015)The interaction of Eu(III) with two different types of marine sediments has been investigated as a function of various parameters (e.g. pH, [Eu(III)]o, I, humic acid) to evaluate their effect on the Eu(III) adsorption. The ...
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Adsorptive removal of U(VI) and Th(IV) from aqueous solutions using polymer-based electrospun PEO/PLLA fibrous membranes
Savva, Ioanna; Efstathiou, Maria; Krasia‐Christoforou, Theodora; Pashalidis, Ioannis (2013)Fibrous membranes based on poly(ethylene oxide) and poly(l-lactide) fabricated by electrospinning were evaluated for the first time as substrates for the adsorption of tetravalent thorium (Th(IV)) and hexavalent uranium ...
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Agricultural biomass/waste as adsorbents for toxic metal decontamination of aqueous solutions
Anastopoulos, Ioannis; Pashalidis, Ioannis; Hosseini-Bandegharaei, Ahmad; Giannakoudakis, Dimitrios A.; Robalds, Artis; Usman, Muhammad; Escudero, Leticia Belén; Zhou, Yaoyu; Colmenares, Juan Carlos; Núñez-Delgado, Avelino; Lima, Éder Claudio (2019)Toxic metals can be present in the environment, causing negative effects on the ecosystem and human health. Although several technologies have been used for decontamination purposes, biosorption is an environmentally ...
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Alpha radiometry of uranium in surface and ground waters by liquid scintillation counting after separation of the radionuclide by cation exchange
Antoniou, Stella; Tsiaili, A.; Pashalidis, Ioannis (2008)The alpha radioactivity of surface and ground water samples has been determined by liquid scintillation counting (LSC) after chemical preparation of the samples by cation exchange using the Chelex 100 resin. The method ...
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Alpha spectroscopic analysis of actinides (Th, U and Pu) after separation from aqueous solutions by cation-exchange and liquid extraction
Kiliari, T.; Pashalidis, Ioannis (2010)The radioactivity concentration of 236Pu, 232U and 228Th in aqueous samples has been determined by means of alpha spectroscopy after chemical separation and pre-concentration of the radionuclides by cation exchange and ...
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Alpha-radiometry of seawater by liquid scintillation counting
Antoniou, Stella; Costa, Constantinos; Pashalidis, Ioannis (2006)Liquid scintillation counting of the alpha-radionuclides after pre-concentration by cation-exchange represents a simple and robust method for the determination of total alpha-radioactivity in seawater. The total efficiency ...
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Alpha-spectroscopic analysis of uranium in ground- and seawater samples after EDTA-masking of interfering cations
Paschalidou, Polyxeni; Pashalidis, Ioannis (2019)The effect of EDTA-masking on the alpha-spectral characteristics corresponding to uranium analysis in ground- and seawater samples after cation-exchange and electrodeposition is systematically investigated. Addition of ...
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Americium and samarium determination in aqueous solutions after separation by cation-exchange
Kiliari, T.; Pashalidis, Ioannis (2014)The concentration of trivalent americium and samarium in aqueous samples has been determined by means of alpha-radiometry and UV-Vis photometry, respectively, after chemical separation and pre-concentration of the elements ...
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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 ...
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Aufbau von Telluroacrylamid-Komplexen aus Pentacarbonyl(diphenyltelluroketon)wolfram und Inaminen
Fischer, H.; Pashalidis, Ioannis (1988)Pentacarbonyl(diphenyltelluroketone)tungsten, (CO)5W(TeCPh2), reacts with 1-diethylaminoprop-1-yne and bis(diethylamino)acetylene, RCCNEt2, by [2 + 2]- cycloaddition and electrocyclic ring-opening to give the new ...
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Biosorption of methylene blue dye by Ligustrum lucidum fruits biomass: equilibrium, isotherm, kinetic and thermodynamic studies
Haskis, Panagiotis; Tsolis, Pantelis; Tsiantouka, Lidia; Mpeza, Paraskevi; Barouchas, Pantelis; Giannopoulos, Georgios; Pashalidis, Ioannis; Anastopoulos, Ioannis (Global NEST, 2023)In this work, biomass from Ligustrum lucidum fruits (LF) was used for the first time as a novel adsorbent to remove the Methylene Blue dye (MB) from aqueous solutions. The adsorption equilibrium was attained after 60 min, ...
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Boron adsorption on alumina (Al2O3) and magnesia (MgO) in aqueous solutions: A comparative study
Konstantinou, M.; Kasseta, G.; Pashalidis, Ioannis (2006)The adsorption of boron on alumina (Al2O3) and magnesia (MgO) has been investigated in aqueous solutions as a function of pH, boron concentration, amount of adsorbent, ionic strength and temperature. Analysis of the ...
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Boron in groundwaters of Nicosia (Cyprus) and its treatment by reverse osmosis
Georghiou, G.; Pashalidis, Ioannis (2007)Boron levels in groundwaters of Nicosia have been determined, compared to previous concentration data and correlated to the concentration of other chemical species contained in the groundwaters under investigation. According ...