Πλοήγηση ανά Θέμα "ADSORPTION"
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Decomposition of NH3 on Pd and Ir - Comparison with Pt and Rh
(1997)The unimolecular decompositions of NH3 on polycrystalline wires and foils of Pd and Ir are examined and compared with the corresponding ones on Pt and Ph. The reactions were carried out in a differential flow reactor, at ... -
Decomposition of NO on Pd and Ir. Comparison with Pt and Rh
(1996)The unimolecular decomposition of NO has been examined on Pd and Ir and they are compared with the corresponding reactions on Pt and Rh. The runs were carried out in a differential now reactor, at pressures from 0.01 to 5 ... -
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 ... -
Mn-feroxyhyte: The role of synthesis conditions on As(III) and As(V) removal capacity
(2014)This study evaluates the critical parameters of synthesizing nanocrystalline tetravalent Mn-feroxyhyte, a single-phase arsenic adsorbent equally efficient against As(III) and As(V). The production of such Fe/Mn oxy-hydroxides ... -
A novel approach for arsenic adsorbents regeneration using MgO
(2014)An integrated procedure for the regeneration of iron oxy-hydroxide arsenic adsorbents by granulated MgO is proposed in this study. A continuous recirculation configuration, with a NaOH solution flowing sequentially through ... -
Oxygen adatom diffusion on the NiO(001) surface by molecular dynamics simulation
(2002)We present results concerning the diffusion processes of O2- adatom on the NiO(0 0 1) surface obtained by molecular dynamics simulations based on a rigid ion potential model. We covered a temperature region from 0.37T(m) ... -
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 ... -
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 ... -
Tetravalent Manganese Feroxyhyte: A Novel Nanoadsorbent Equally Selective for As(III) and As(V) Removal from Drinking Water
(2013)The development of a single-phase Fe/Mn oxy-hydroxide (delta-Fe0.76Mn0.24OOH), highly efficient at adsorbing both As(III) and As(V), is reported. Its synthesis involves the coprecipitation of FeSO4 and KMnO4 in a kilogram-scale ... -
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 ... -
Use of an iron-overexchanged clinoptilolite for the removal of Cu2+ ions from heavily contaminated drinking water samples
(2008)Clinoptilolite, a natural zeolite, was used for the synthesis of a high surface area clinoptilolite-iron oxide system, in order to be used for the removal of Cu2+ ions from drinking water samples. The solid system was ... -
Use of clinoptilolite and an Fe-overexchanged clinoptilolite in Zn2+ and Mn2+ removal from drinking water
(2008)Clinoptilolite, a natural zeolite, was used for the synthesis of a high surface area clinoptilolite-iron oxide system (Clin-Fe system) to be used for the removal of Mn2+ and Zn2+ ions from drinking water samples. The new ...