Browsing by Author "Dimirkou, A."
Now showing items 1-20 of 23
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Adsorption of methylene blue and methyl red dyes from aqueous solutions onto modified zeolites
(2013)Zeolite, hematite, modified zeolite and commercial activated charcoal were examined for their ability to remove methylene blue (MB) and methyl red (MR) from their aqueous solutions. Modified zeolite and hematite were ... -
Availability of Cu and Zn in an acidic sludge-amended soil as affected by zeolite application and liming
(2012)Purpose Acidic soils exhibit high trace element availability compared to neutral pH soils, and thus, when trace metals are added (e. g. due to sewage sludge application), measures should be taken to reduce their mobility. ... -
Distribution of heavy metals of agricultural soils of central Greece using the modified BCR sequential extraction method
(2007)The state of heavy metal (Cd, Cu, Ni, Zn, Pb, and Cr) pollution was studied, in 440 texturally different soil profiles in Thessaly, an intensely cultivated region in Central Greece. The study was carried out in 2004 and ... -
An EPR study of Cu adsorption by clinoptilolite from Cl-, NO3 and SO42- solutions
(2008)The concentration and the type of Cu2+ species adsorbed on a natural zeolite (Clinoptilolite) was measured and studied by using Electron Paramagnetic Resonance Spectroscopy (EPR). The EPR results together with macroscopic ... -
Heavy-Metal Concentration in Tobacco Leaves in Relation to Their Available Soil Fractions
(2009)Tobacco (Nicotiana tabacum) is one of the most important agricultural products in Greece. The accumulation of heavy metals in tobacco leaves in accordance with a possible risk of transferring them to people by smoke is ... -
Hexavalent Chromium Dynamics and Uptake in Manure-Added Soil
(2012)The soil dynamics of hexavalent Cr, a particularly mobile and toxic metal, is of a great environmental concern, and its availability to plants depends on various soil properties including soil organic matter. Thus, in a ... -
Impact of New Soil Amendments on the Uptake of Lead by Crops
(2013)In the present article, the reclamation of lead (Pb)-contaminated soils by adding zeolite, bentonite, goethite, and two newly produced adsorbents consisting of zeolite and goethite (systems I and II) was studied. These ... -
Influence of some soil parameters on heavy metals accumulation by vegetables grown in agricultural soils of different soil orders
(2008)The main purpose of this research was to determine the levels of heavy metals in tomato, potato and lettuce, grown in agricultural soils of different soil orders (Alfisols, Endisols and Vertisols), located at Central Greece. ... -
KINETIC-STUDY OF PHOSPHORUS DESORPTION BY ALFISOLS AND ENTISOLS
(1993)The kinetics of phosphorus (P) desorption by six Greek soils, four Alfisols and two Entisols, have been studied. By the addition of several amounts of P fertilizers at different water/soil rations and different contact ... -
Levels of heavy metals pollution in different types of soil of central greece
(2008)This investigation was performed in order to clarify the degree of heavy metals pollution in forest, agricultural and industrial surface soil samples in relation to pre-anthropogenic soils of Almyros region, in Central ... -
Monitoring the Variability of Nitrogen and Cadmium Concentrations in Soils and Irrigation Water in the Almyros Area of Central Greece
(2009)The main purpose of this investigation was the monitoring of nitrogen (N) and cadmium (Cd) levels in soils and irrigation water samples in an intensively cultivated area in central Greece. From 2005 to 2007, soil as well ... -
Monitoring the Variability of Zinc and Copper in Surface Soils from Central Greece
(2009)The main purpose of this investigation was the monitoring of Zn and Cu levels in soils of central Greece over three consecutive years (2005 to 2007). Soil samples were analysed for available forms (after extraction with ... -
Phosphate Adsorption from Aqueous Solutions onto Goethite, Bentonite, and Bentonite-Goethite System
(2013)The present paper examines the phosphate adsorption from aqueous solutions onto goethite, bentonite, and bentonite-goethite system. The properties of the materials were studied by X-ray diffraction (XRD), attenuated total ... -
Phosphorus Removal from Aqueous Solutions and Greek Soils using Modified Natural Minerals and Its Impact on the Morphological Characteristics of Crops
(2013)In the present article, adsorption experiments of phosphate ions from their aqueous solutions were conducted with the use of five different materials (zeolite, bentonite, goethite, and systems I and II). The adsorption of ... -
THE SORPTION ISOTHERMS OF POTASSIUM
(1994)The one- and two-surface Langmuir, the Freundlich and the Temkin isotherms were fitted to potassium sorption data for Alfisol Haploxeralf at pH range of 4.0 to 8.0. Each was found to describe potassium sorption data with ... -
Sorption of Cadmium and Arsenic by Goethite and Clinoptilolite
(2009)Cadmium (Cd) and arsenic (As) adsorption and desorption by goethite and clinoptilolite were the subjects of this article. Experimental variables were the concentrations of Cd, As, background electrolyte, and the solution ... -
Sorption of Zinc by Clinoptilolite-Fe(NO3)3 Systems
(2009)Many factors may affect the zinc (Zn) adsorption and desorption on natural clinoptilolite and iron (Fe) oxides. Among them are ionic strength and pH. In this article, the Zn retention behavior on two clinoptilolite-Fe(NO3)3 ... -
Spatial monitoring of arsenic and heavy metals in the Almyros area, Central Greece. Statistical approach for assessing the sources of contamination
(2015)The purpose of this work was to provide information on As and heavy metals content in surface soils of the Almyros area, in Central Greece. A 3-year (2009-2011) research was conducted, in order to investigate the possible ... -
Uptake of Zn2+ ions by a fully iron-exchanged clinoptilolite. Case study of heavily contaminated drinking water samples
(2007)Clinoptilolite, a natural zeolite, was used for the synthesis of a high surface area clinoptilolite (Clin)-iron (Fe) oxide system, in order to be used for the removal of Zn2+ ions from drinking water samples. The new system ...