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Showing 1 to 20 of 54 for “"Adsorption Kinetics"”.
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Adsorption Kinetics and Phase Behavior of Particles Adsorbed at an Interface
<p>The ability to predict the adsorption dynamic, phase behavior, and surface pressure of a monolayer of adsorbed particles in two-dimensional systems are key aspects of many current research areas. Examples include phase transitions in amphiphilic monolayers, emulsion stability due to particle …
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Development of novel methodologies to analyze the adsorption kinetics of nonionic surfactants
… underlying physical phenomena involved in the kinetics of surfactant adsorption will help to: (i) understand the observed Dynamic Surface Tension (DST) behavior of surfactants, and (ii) design optimal surfactant formulations for applications in which the surfactant adsorption kinetics plays a …
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Adsorption kinetics for the removal of soluble manganese by oxide- coated filter media
This study was conducted to examine the kinetics of manganese sorption on oxide-coated filter media. Initial experimentation confirmed the findings of other investigators, the Mn²⁺ sorption capacity of oxide-coated media increases as solution pH increases. Further study revealed that uptake rate …
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The Role of Pore Size Distribution in Competitive Adsorption on Activated Carbon
Based on these competitive adsorption mechanisms it was proposed that in order to minimize the impact of NOM on micropollutant adsorption capacity and adsorption kinetics, the adsorbent must have a wide range of micropore sizes, including pores of similar size to the target compound.
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Design and synthesis of chemically-modified biosorbents for the removal of anionic metals and dye: kinetic and thermodynamic studies
… protection works need to solve. <br/>Biological adsorption as a new method of heavy metal and dyes removal and recovery, it has the advantages of wide source of raw materials, high adsorption efficiency, environmental friendliness, no secondary pollution and so on, showing a good application …
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Transformation of Trichloromethanes in Iron(ii)-Containing Environments
… nontronite (NG-1), in aqueous suspension. The adsorption rate of RCCl3 in clay minerals showed a strong correlation with the iron(II) content of the clay (r2 = 0.94). The clay surface behaves as a Bronsted base and promotes RCCl3 dehydrochlorination (elimination). The adsorption kinetics at the …
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Organic-inorganic hybrid materials for arsenic adsorption : surface complexation and intraparticle diffusion
… AT AUTHOR'S REQUEST.] Arsenic removal through adsorption is one of the most widely applied techniques for arsenic removal from drinking water. Among the numerous arsenic adsorbents that have been developed, organic-inorganic hybrid materials are promising candidates due to the merits of their …
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Design of Heterogeneous Surfaces for Polymer Adsorption
The study of adsorption of a globular protein with intrinsic chemical heterogeneity was performed to highlight the role of the nature of adsorbates. On a chemically homogeneous surface, unlike flexible homopolymers, the adsorption kinetics of protein were strongly affected by the chemical …
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Measurements, Modeling and Analysis of High Pressure Gas Sorption in Shale and Coal for Unconventional Gas Recovery and Carbon Sequestration
… of gases (methane and carbon dioxide) and their adsorption behavior in shale and coal. This dissertation therefore analyzes adsorption isotherms, thermodynamics, and kinetics properties of methane and carbon dioxide in shale and coal based on experimental results to provide preliminary answers to …
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Adsorption of Iodine and Water on Silver-Exchanged Mordenite
… shown the outstanding performance of Ag0Z for adsorption of both molecular iodine and organic iodide. However, the detailed adsorption kinetics of I2 on Ag0Z was never reported. Therefore, this study included determining the adsorption dynamics of I2 adsorption on Ag0Z through continuous -flow …
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Treatment of natural rubber wastewater using oil palm empty fruit bunch, kaolin and zeolite as composite adsorbent
… natural rubber wastewater. Batch and fixedbed adsorption techniques were used in this study. The combination ratio of zeolite, EFB and kaolin as a composite was optimised using D-optimal mixture design (DMD) while the characterization of composite adsorbents was done using Fourier Transform …
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Localized Surface Plasmon Resonance: Nanoscale Sensing for Processes at Interfaces
… interfaces, with an emphasis on deciphering kinetics and pathways of dynamic adsorption processes. LSPR-based biosensor exploits the high sensitivity of the plasmon frequency to refractive index changes confined to 5-30 nanometers around the metal nanoparticles deposited on the sensor surface …
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Synthesis of Acid Leached Diatomaceous Earth/ Amine-Functionalized Activated Carbon Composite and its Potential Application in Oily Wastewater Treatment
… was used as a chemical agent to enhance the adsorption efficiency on the surface of the activated carbon and the amine-functionalized activated carbon was used in the removal of oil from oily wastewater. Lastly, a composite was prepared using both the synthesized acid leached diatomaceous …
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Study of Chemical States, Composition and Adsorption Behavior of Iron Coated Granular Activated Carbon (Fe-GAC) for Selenate Removal and Feasible Adsorbent Modifications
… structures using spectroscopic techniques. Adsorption kinetics and equilibrium experiments with initial selenium concentration of 1 mg/L were conducted under three different ionic strengths to study selenate adsorption behavior. Selenate adsorption reached equilibrium within 48 hours with …
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Dynamic and equilibrium adsorption behaviour of ß-lactoglobulin at the solution/tetradecane interface: Effect of solution concentration, pH and ionic strength
… additional consideration of depletion due to BLG adsorption at the interface at low protein bulk concentrations. This fact makes experiments more efficient when oil drops are studied in the aqueous protein solutions rather than solution drops formed in oil. On the basis of obtained experimental …
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Investigation of Asphaltene Adsorption at Liquid-Liquid and Liquid-Solid Interfaces
… to understand the mechanism of asphaltenes adsorption at the water-oil interface and their deposition onto the solid surfaces, and investigations are reported here on both these adsorption and deposition phenomena.</p> <p>Defined by their solubility (soluble in aromatic solvents but …
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Effect of pH on adsorption and desorption equilibria and kinetics of 2-nitrophenol and phenol onto two activated carbons.
… was to investigate the impact of pH on the adsorption equilibria, adsorption kinetics, desorption equilibria and desorption kinetics. A study was conducted by using 2-nitrophenol (2NP) and phenol as organic pollutants and F-400 and WV-B carbons as adsorbents. The batch adsorption isotherms …
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The post-dehydration processing and the effects on the structural modifications and functionalities of milk protein powders
… the rehydration abilities, flowability and water adsorption are investigated. MPI agglomerated by FB had the more irregular shapes and porous structures. However, densely packed structures of HS granules caused the higher bulk density and lower porosity. Their shapes were more like spheres with …
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Validation of Low Resistance Filters for Gas/Vapour Sampling.
… model was found to satisfactorily predict the adsorption kinetics of the 3M charcoal filter media at different loading values of hydrocarbons. It was therefore concluded that the model can be applied to determine the suitable amount of 3M charcoal filter media prior to sampling for a given …
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Effect of Dispersion on Rheology and 3D Printing of Chitosan-Graphene-Titanium Dioxide Composites
… that enhance surface area and particle-particle adsorption kinetics for water remediation applications. However, DIW of particle-filled systems faces challenges, particularly nozzle clogging. This paper explores the relationship between dispersion of aggregate size, torsional rheology, and the …
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