Buscar
Mostrando ítems 1-10 de 77
Effects of pH and ionic strength on the adsorption of phosphate and arsenate at the goethite-water interface
(Academic Press Inc Elsevier Science, 2005-05)
The surface properties of a well-crystallized synthetic goethite have been studied by acid-base potentiometric titrations, electrophoresis, and phosphate and arsenate adsorption isotherms at different pH and electrolyte ...
Arsenate adsorption at the sediment-water interface: Sorption experiments and modelling
(Springer, 2012-01)
Arsenate adsorption was studied in three clastic sediments, as a function of solution pH (4.0-9.0) and arsenate concentration. Using known mineral values, protolytic constants obtained from the literature and K ads values ...
Arsenate adsorption onto sediment-water interface: sorption experiments and modeling
(Springer, 2012-01)
Arsenate adsorption was studied in three clastic sediments, as a function of solution pH (4.0–9.0) and arsenate concentration. Using known mineral values, protolytic constants obtained from the literature and K ads values ...
Arsenic in porewaters of the unsaturated zone of an Argentinean watershed: Adsorption and competition with carbonate as important processes that regulate its concentration
(Springer, 2015-06)
The arsenic (As) concentration in porewaters of the unsaturated (vadose) zone of a watershed located in the Chaco-Pampean Plain of Argentina was investigated. A water displacement method using carbon tetrachloride was ...
Adsorção de arsênio(V) pelo compósito magnético hidrotalcita - óxido de ferro
(Química Nova, 2018)
Arsenate interaction with the surface of nanomagnetic particles. High adsorption or full release
(Elsevier Ltd, 2017-10)
The interaction of arsenate species in aqueous media with the surface of nanomagnetic particles with equivalent structure, magnetite (Fe3O4) and nickel ferrite (NiFe2O4), was investigated with adsorption isotherms at pH ...
Arsenate removal from aqueous solution by montmorillonite and organo-montmorillonite magnetic materials
(Academic Press Inc Elsevier Science, 2021-01)
Magnetic-clay (MtMag) and magnetic-organoclay (O100MtMag) nanocomposites were synthesized, characterized and evaluated for arsenic adsorption. Batch arsenic adsorption experiments were performed varying pH conditions and ...
Adsorption of arsenic onto films based on chitosan and chitosan/nano-iron oxide
(Elsevier Science, 2020-12)
Films made from neat chitosan and chitosan with magnetic nanoparticles (MNPs) were tested as adsorbents of arsenate ions. Sorption equilibrium and sorption kinetics studies are reported, including different models applied ...
Comparison of arsenate adsorption from neutral pH aqueous solutions using two different iron-trimesate porous solids: Kinetics, equilibrium isotherms, and synchrotron X-ray absorption experiments
(Springer, 2020-10-06)
We have explored the use of two different iron-based porous materials for arsenic uptake from neutral pH aqueous solutions. Both materials are reminiscent of a material known as MIL-100(Fe), a Metal Organic Framework (MOF) ...