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Preparation of an environmentally friendly lead adsorbent. A contribution to the rational design of heavy metal adsorbents
(Elsevier, 2020-10)
This work described the preparation and characterization of water insoluble chitosan derivatives as lead adsorbents. In highly regioselective reactions, N-substituted crosslinked chitosan derivatives were obtained by ...
pH, ionic strength, and ion competition effect on Cu(II) and Ni(II) sorption by a Na-bentonite used as liner material
(Hard, 2019-01)
The potential of a Na-bentonite to be used as liner material for the adsorption of Cu(II) and Ni(II) ions from mono, bi, and polycationic solutions was investigated by batch mode. pH and ionic strength effect on Cu(II) and ...
Clay–magnetite co-aggregates for efficient magnetic removal of organic and inorganic pollutants
(Multidisciplinary Digital Publishing Institute, 2021-08-27)
This work reports the behavior of montmorillonite magnetite mixtures of varying composition in aqueous dispersions and evaluates their adsorbing properties using a cationic organicpollutant, methylene blue (MB+), and an ...
Geochemical mobility of arsenic in the surficial waters from Argentina
(Springer Verlag Berlín, 2016-12)
The presence of arsenic (As) in surface water constitutes an important environmental risk, where mobility and adsorption processes are responsible for its behavior in the sediment–water interface. Therefore, the assessment ...
Interrelations of structure, electric surface charge, and hydrophobicity of organo-mica and –montmorillonite, tailored with quaternary or primary amine cations. Preliminary study of pyrimethanil adsorption
(Elsevier Science SA, 2019-02)
In this work, organo-montmorillonite (organo-Mt) and organo-synthetic mica (organo-mica), obtained by quaternary or primary amine cations (octadecyltrimethylammonium (ODTMA) or octadecyl-amine (ODA), respectively) exchanged ...
Interfacial Dynamics and its relations with "negative" surface viscosities measured at water-air interfaces covered with a cationic surfactant
(American Chemical Society, 2019-06)
We studied the dynamics of a cationic surfactant monolayer, Gemini 12-2-12, at the air-water interface for surfactant aqueous solutions at concentrations below the critical micelle concentration. We present surface rheology ...
NO and NO 2 Adsorption on Terrace, Step, and Corner Sites of the BaO Surface from DFT Calculations
(American Chemical Society, 2004-04)
The adsorption of NO and NO2 molecules at the BaO surface has been investigated by means of density functional theory (DFT) cluster model calculations. Regular adsorption sites at flat terraces have been compared with those ...
Ceramic papers containing Y zeolite for toluene removal
(Elsevier Science, 2011-11)
A papermaking technique with a dual polyelectrolyte retention system was used for the preparation of NaY zeolite-containing papers, which implied the use of cationic and anionic polymers. Two kinds of fibers were employed, ...
DFT study of ethanol adsorption on CaO(0 0 1) surface
(Elsevier Science, 2020-01-15)
Ethanol adsorption on CaO (0 0 1) surface at low coverage is studied using Density Functional Theory (DFT) calculations with van der Waals corrections. We investigated the CaO surface in its rock salt structure. The more ...
Influence of functionalization, surface area and charge distribution of SBA15-based adsorbents on CO (II) and NI (II) removal from aqueous solutions
(Elsevier, 2020-04)
Amino functionalized solids were obtained by anchoring ethoxysilane and ethylenediaminetetraacetic groups onto the surface of a mesostructured silica SBA-15. The materials were characterized by nitrogen adsorptiondesorption, ...