Kinetic sorption in the transport of species in a cement based composite

2019 ◽  
Author(s):  
Igor Medveď ◽  
Ladislav Kalvoda ◽  
Eva Vejmelková ◽  
Stanislav Vratislav ◽  
Robert Černý
Keyword(s):  
Kinetic Sorption

Sorption of Bisphenol A in Aqueous Solutions on Irradiated and as-Grown Multiwalled Carbon Nanotubes

2018 ◽  
Vol 69 (5) ◽  
pp. 1233-1239
Author(s):  
Raluca Madalina Senin ◽  
Ion Ion ◽  
Ovidiu Oprea ◽  
Rusandica Stoica ◽  
Rodica Ganea ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Bisphenol A ◽  
Aqueous Solutions ◽  
Adsorption Capacity ◽  
Multiwalled Carbon Nanotubes ◽  
Adsorption Process ◽  
Sorption Process ◽  
Multiwalled Carbon ◽  
Before And After ◽  
Kinetic Sorption

In this study, non-irradiated and weathered multiwalled carbon nanotubes (MWCNTs) obtained through irradiation, were studied as adsorbents for BPA, both nanomaterials being characterized before and after the adsorption process. The objectives of our investigation were to compare the characteristics of non-irradiated and irradiated MWCNTs, to evaluate the adsorption capacity of BPA by pristine and irradiated MWCNTs and to determine the variation of the kinetic, sorption and thermodynamic parameters during sorption process using both sorbents.

KINETIC SORPTION OF CONTAMINANTS OF EMERGING CONCERN BY A PALYGORSKITE-MONTMORILLONITE FILTER MEDIUM

2016 ◽  
Author(s):  
Jonathan Levy ◽  
◽  
Tedros Berhane ◽  
Mark P.S. Krekeler ◽  
Neil Danielson
Keyword(s):  
Filter Medium ◽  
Contaminants Of Emerging Concern ◽  
Kinetic Sorption

New method for determination of equilibrium/kinetic sorption parameters

2009 ◽  
Vol 9 (6) ◽  
pp. 1323-1325 ◽  
Author(s):  
Soon-Jae Lee ◽  
Seung-Gun Chung ◽  
Dong-Ju Kim ◽  
Cheol Eui Lee ◽  
Jae-Woo Choi
Keyword(s):  
New Method ◽  
Kinetic Sorption ◽  
Sorption Parameters

scholarly journals Delineating the Specific Influence of Virus Isoelectric Point and Size on Virus Adsorption and Transport through Sandy Soils

1998 ◽  
Vol 64 (2) ◽  
pp. 405-410 ◽  
Author(s):  
Scot E. Dowd ◽  
Suresh D. Pillai ◽  
Sookyun Wang ◽  
M. Yavuz Corapcioglu
Keyword(s):  
Isoelectric Point ◽  
Transport Model ◽  
Virus Particles ◽  
Transport Studies ◽  
Viral Transport ◽  
Virus Adsorption ◽  
Isoelectric Points ◽  
Kinetic Sorption ◽  
Viral Adsorption ◽  
Specific Influence

ABSTRACT Many of the factors controlling viral transport and survival within the subsurface are still poorly understood. In order to identify the precise influence of viral isoelectric point on viral adsorption onto aquifer sediment material, we employed five different spherical bacteriophages (MS2, PRD1, Qβ, φX174, and PM2) having differing isoelectric points (pI 3.9, 4.2, 5.3, 6.6, and 7.3 respectively) in laboratory viral transport studies. We employed conventional batch flowthrough columns, as well as a novel continuously recirculating column, in these studies. In a 0.78-m batch flowthrough column, the smaller phages (MS2, φX174, and Qβ), which had similar diameters, exhibited maximum effluent concentration/initial concentration values that correlated exactly with their isoelectric points. In the continuously recirculating column, viral adsorption was negatively correlated with the isoelectric points of the viruses. A model of virus migration in the soil columns was created by using a one-dimensional transport model in which kinetic sorption was used. The data suggest that the isoelectric point of a virus is the predetermining factor controlling viral adsorption within aquifers. The data also suggest that when virus particles are more than 60 nm in diameter, viral dimensions become the overriding factor.

Influence of kinetic sorption and diffusion on pesticide movement through aggregated soils

Chemosphere ◽  
2004 ◽  
Vol 57 (6) ◽  
pp. 481-490 ◽  
Author(s):  
Sabine Beulke ◽  
Colin D. Brown ◽  
Christopher J. Fryer ◽  
Wendy van Beinum
Keyword(s):  
Kinetic Sorption ◽  
And Diffusion

Modelling multiseasonal preferential transport of dissolved organic carbon in a shallow forest soil: Equilibrium versus kinetic sorption

2019 ◽  
Vol 33 (22) ◽  
pp. 2898-2917 ◽  
Author(s):  
Jaromir Dusek ◽  
Michal Dohnal ◽  
Tomas Vogel ◽  
Anne Marx ◽  
Johannes A.C. Barth
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Forest Soil ◽  
Preferential Transport ◽  
Kinetic Sorption

COMPARISON OF INSTANTANEOUS EQUILIBRIUM AND EQUILIBRIUM-KINETIC SORPTION MODELS FOR SIMULATING SIMULTANEOUS LEACHING AND RUNOFF OF PESTICIDES1

Soil Science ◽  
1996 ◽  
Vol 161 (10) ◽  
pp. 646-655 ◽  
Author(s):  
Q. L. Ma ◽  
L. R. Ahuja ◽  
R. D. Wauchope ◽  
J. G. Benjamin ◽  
B. Burgoa
Keyword(s):  
Kinetic Sorption

scholarly journals Transient solute transport with sorption in Poiseuille flow

2017 ◽  
Vol 828 ◽  
pp. 733-752 ◽  
Author(s):  
Li Zhang ◽  
Marc A. Hesse ◽  
Moran Wang
Keyword(s):  
Partition Coefficient ◽  
Solute Transport ◽  
Poiseuille Flow ◽  
Reaction Rates ◽  
Late Time ◽  
Sorption Model ◽  
Transport Velocity ◽  
Transport Behaviour ◽  
Kinetic Sorption ◽  
Limiting Case

Previous work on solute transport with sorption in Poiseuille flow has reached contradictory conclusions. Some have concluded that sorption increases mean solute transport velocity and decreases dispersion relative to a tracer, while others have concluded the opposite. Here we resolve this contradiction by deriving a series solution for the transient evolution that recovers previous results in the appropriate limits. This solution shows a transition in solute transport behaviour from early to late time that is captured by the first- and zeroth-order terms. Mean solute transport velocity is increased at early times and reduced at late times, while solute dispersion is initially reduced, but shows a complex dependence on the partition coefficient $k$ at late times. In the equilibrium sorption model, the time scale of the early regime and the duration of the transition to the late regime both increase with $\ln k$ for large $k$. The early regime is pronounced in strongly sorbing systems ($k\gg 1$). The kinetic sorption model shows a similar transition from the early to the late transport regime and recovers the equilibrium results when adsorption and desorption rates are large. As the reaction rates slow down, the duration of the early regime increases, but the changes in transport velocity and dispersion relative to a tracer diminish. In general, if the partition coefficient $k$ is large, the early regime is well developed and the behaviour is well characterized by the analysis of the limiting case without desorption.

Sign in / Sign up

Export Citation Format

Share Document