Results 221 to 230 of about 32,792 (241)

Competitive Adsorption of Phosphate and Arsenate on Goethite

Environmental Science & Technology, 2001
The competitive adsorption of phosphate and arsenate on goethite was investigated to better understand the bonding mechanisms for the two ions. The anions were added both simultaneously and sequentially. When added simultaneously, the two ions were adsorbed about equally, with the total surface coverage being slightly greater than for either ion alone.
Hongshao, Z., Stanforth, R.
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Competitive adsorption of phosphate and phosphonates onto goethite

Water Research, 2006
Phosphate and phosphonates are both strongly adsorbed onto mineral surfaces and their removal during wastewater treatment is mainly due to adsorptive processes. We have conducted experiments to study the mutual influence of phosphate and six different phosphonates on each other in buffered medium at pH 7.2.
Bernd, Nowack, Alan T, Stone
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Competitive Adsorption on Wollastonite:  An Atomistic Simulation Approach

The Journal of Physical Chemistry B, 2005
Atomistic simulation techniques are used to simulate surface structure and adsorption behavior of scarcely floatable wollastonite mineral in the presence of molecular and dissociated water, methanoic acid, and methylamine. The latter two additives represent the two widely used collector head-group molecules. The static energy minimization code METADISE
T K, Kundu, K Hanumantha, Rao, S C, Parker   +2 more
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Frontal analysis method to determine competitive adsorption isotherms

Journal of Chromatography A, 2001
In order to design and to optimise preparative separations, the knowledge of the underlying thermodynamic functions, i.e., the adsorption isotherms, is the most essential information. Usually these functions cannot be predicted and various methods have been suggested to determine them experimentally.
Lisec, O., Hugo, P., Seidel-Morgenstern, A.   +2 more
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Competitive adsorption of plasma proteins onto polymer surfaces

Thrombosis Research, 1974
Abstract Competitive adsorption of plasma proteins onto polymer surfaces has been investigated by using I-125 radiolabelled proteins to determine the rate and adsorbed concentration of each protein from a mixture of albumin, γ-globulin and fibrinogen in a phosphate buffered saline solution.
R G, Lee, C, Adamson, S W, Kim
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A mathematical model for competitive adsorptions

Separation and Purification Technology, 2015
Abstract Adsorption is widely applied in separation and purification of gas mixtures and liquids. A competitive multicomponent multilayer kinetic model is derived for adsorption on solid surfaces, without an artificial distinction between chemisorption and physisorption. The adsorption isotherm was derived based on the kinetic model.
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Carbonate adsorption on goethite in competition with phosphate

Journal of Colloid and Interface Science, 2007
Competitive interaction of carbonate and phosphate on goethite has been studied quantitatively. Both anions are omnipresent in soils, sediments, and other natural systems. The PO4-CO3 interaction has been studied in binary goethite systems containing 0-0.5 M (bi)carbonate, showing the change in the phosphate concentration as a function of pH, goethite ...
Rahnemaie, R., Hiemstra, T., van Riemsdijk, W.H.   +2 more
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New thermodynamically consistent competitive adsorption isotherm in RPLC

Journal of Colloid and Interface Science, 2003
A new equation of competitive isotherms was derived in the framework of the ideal adsorbed solution (IAS) that predicts multisolute adsorption isotherms from single-solute isotherms. The IAS theory makes this new isotherm thermodynamically consistent, whatever the saturation capacities of these single-component isotherms.
Fabrice, Gritti, Georges, Guiochon
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Adsorption of sticky hard spheres: relevance to protein competitive adsorption

Journal of the Chemical Society, Faraday Transactions, 1992
The sticky hard sphere model provides a simple analytic theory of competitive adsorption which may be relevant to the modelling of protein competitive adsorption. Equilibrium monolayer compositions are calculated here for binary mixtures of equal sized molecules as a function of adsorbate concentration and difference in ‘stickiness’ at the adsorbent ...
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Competitive adsorption of surfactants at air/water interfaces

Journal of Colloid and Interface Science, 2003
The zeta potential of an air bubble suspended in an aqueous solution of mixed fluorocarbon and hydrocarbon anionic surfactants is studied over a wide range of concentrations and mixture compositions. The zeta potential is related to surfactant ion adsorption.
Graciaa, Alain, Creux, Patrice, Lachaise, Jean, Schechter, Robert   +3 more
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