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Showing 1 to 9 of 9 for “"mass transfer kinetics"”.
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Comparison of Silica Polyamine Composites and Crosslinked Polystyrene Resins
… metal ion capacity, pH dependence of capacity, mass transfer kinetics, metal ion selectivity, and the efficiency of recovering the metal from the adsorbent. To further compare these ion exchange matrices, some new synthetic procedures for making analogs of existing polystyrene resins on the …
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Comparison of Silica Polyamine Composites and Crosslinked Polystyrene Resins
… metal ion capacity, pH dependence of capacity, mass transfer kinetics, metal ion selectivity, and the efficiency of recovering the metal from the adsorbent. To further compare these ion exchange matrices, some new synthetic procedures for making analogs of existing polystyrene resins on the …
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The Structure Function Relationship of Silica Polyamine Composites
… to the surface (free amines) allowed improved mass transfer kinetics and in some cases improvements in metal ion sorption capacities of the polymer modified materials. Further, MTCS is cheaper than CPTCS thus allowing a more economically sound synthesis. As a result of an increase in free …
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The Structure Function Relationship of Silica Polyamine Composites
… to the surface (free amines) allowed improved mass transfer kinetics and in some cases improvements in metal ion sorption capacities of the polymer modified materials. Further, MTCS is cheaper than CPTCS thus allowing a more economically sound synthesis. As a result of an increase in free …
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Development of sorption technology for the cleanup of pesticide contaminated wastewater
… conditions was likely the result of faster mass transfer kinetics caused by a more favorable pore size distribution in Ambersorb adsorbents. Ambersorb adsorbents are easily regenerable, with a slight loss of adsorptive capacity, using methanol. Thiol derivatized cellulose beads were …
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Molecular design of interfacial modifications to alter adsorption/desorption equilibria at fluid-adjoining interfaces
The thermodynamics and mass transfer kinetics of adsorption and desporption at interfaces play vital roles in chemical analysis, separation processes, and many natural phenomena. In this work, computer simulations were used to design interfacial modifications to alter the physical processes of …
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Heterogeneous nucleation of active pharmaceutical ingredients on polymers : applications in continuous pharmaceutical manufacturing
… and crystal growth in the absence of active mass transfer would have too small a throughput and too large a footprint to be useful. The main reasons were long average nucleation induction times and slow crystal growth in the absence of convection. A set of batch desupersaturation experiments …
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The Ferrous Regeneration Process for Use in Alternate Anode Reaction Technology in Copper Hydrometallurgy
… on the regeneration. A study of fundamental kinetics confirms that the regeneration reaction is mass transfer-controlled, requiring adsorption of reactants onto the catalyst surface for reaction. The reaction rate is limited by the diffusivity of Fe(III). Initial Fe(III) concentration and …
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Fate of polycyclic aromatic hydrocarbons associated with coal-tar pitch, asphalt, charcoal, and soot in urban lake sediments
… redistribution model was created incorporating mass transfer kinetics and thermodynamic equilibrium sorption. The model was fit with the results from the well-mixed laboratory experiments and apparent mass transfer coefficients for materials were determined. The modeling results were used to …