Natural and Engineered Nano and Colloidal Transport: Role of Zeta Potential in Prediction of Particle Deposition

Langmuir ◽  
2009 ◽  
Vol 25 (12) ◽  
pp. 6856-6862 ◽  
Author(s):  
Peng Wang ◽  
Arturo A. Keller
Keyword(s):  
Zeta Potential ◽  
Particle Deposition ◽  
Colloidal Transport

The Role of Colloids in Nuclear Waste Disposal

1983 ◽  
Vol 26 ◽  
Author(s):  
A. Avogadro ◽  
G.De Marsily
Keyword(s):  
Ground Water ◽  
Nuclear Waste ◽  
Waste Disposal ◽  
Column Experiments ◽  
Colloidal Transport ◽  
Container Material ◽  
Colloidal Fraction ◽  
Filtration Model

ABSTRACTAspects of formation and characterization of a radioactive colloidal fraction released by the waste form or produced by association with microcolloids naturally existing in ground water or produced either by corrosion of container material or by degradation of backfill material are discussed. A filtration model has been developed in order to describe colloidal transport under field conditions. Comparison between data obtained with laboratory column experiments and theoretical evaluations is presented.

Analysis of Buoyancy and Tube Rotation Relative to the Modified Chemical Vapor Deposition Process

1990 ◽  
Vol 112 (4) ◽  
pp. 1063-1069 ◽  
Author(s):  
M. Choi ◽  
Y. T. Lin ◽  
R. Greif
Keyword(s):  
Secondary Flow ◽  
Vapor Deposition ◽  
Particle Deposition ◽  
Three Dimensional ◽  
Chemical Vapor ◽  
Horizontal Tube ◽  
Deposition Process ◽  
Secondary Flows ◽  
Secondary Motion

The secondary flows resulting from buoyancy effects in respect to the MCVD process have been studied in a rotating horizontal tube using a perturbation analysis. The three-dimensional secondary flow fields have been determined at several axial locations in a tube whose temperature varies in both the axial and circumferential directions for different rotational speeds. For small rotational speeds, buoyancy and axial convection are dominant and the secondary flow patterns are different in the regions near and far from the torch. For moderate rotational speeds, the effects of buoyancy, axial and angular convection are all important in the region far from the torch where there is a spiraling secondary flow. For large rotational speeds, only buoyancy and angular convection effects are important and no spiraling secondary motion occurs far downstream. Compared with thermophoresis, the important role of buoyancy in determining particle trajectories in MCVD is presented. As the rotational speed increases, the importance of the secondary flow decreases and the thermophoretic contribution becomes more important. It is noted that thermophoresis is considered to be the main cause of particle deposition in the MCVD process.

The Role of Zeta Potential in Rh Agglutination

Vox Sanguinis ◽  
1973 ◽  
Vol 24 (3) ◽  
pp. 273-279 ◽  
Author(s):  
F. Stratton ◽  
Violet I. Rawlinson ◽  
P.K. Phillips
Keyword(s):  
Zeta Potential

Role of convection in particle deposition at solid surfaces

2000 ◽  
Vol 165 (1-3) ◽  
pp. 157-187 ◽  
Author(s):  
Zbigniew Adamczyk* ◽  
Piotr Warszyński ◽  
Lilianna Szyk-Warszyńska ◽  
Paweł Weroński
Keyword(s):  
Particle Deposition ◽  
Solid Surfaces

On the role of the lift force in turbulence simulations of particle deposition

1997 ◽  
Vol 23 (4) ◽  
pp. 749-763 ◽  
Author(s):  
Q. Wang ◽  
K.D. Squires ◽  
M. Chen ◽  
J.B. McLaughlin
Keyword(s):  
Lift Force ◽  
Particle Deposition

The role of controlling zeta potential for endotoxin removal in dialysis water preparation

2020 ◽  
Vol 208 ◽  
pp. 239-243
Author(s):  
Yasamen R. Humudat ◽  
Saadi K. Al-Naseri
Keyword(s):  
Zeta Potential ◽  
Dialysis Water

Triethanolamine as an Additive in the Electrophoretic Deposition of TiTe3O8 Thick Films

2012 ◽  
Vol 507 ◽  
pp. 27-34
Author(s):  
Xin Ming Su ◽  
Ai Ying Wu ◽  
Paula M. Vilarinho
Keyword(s):  
Zeta Potential ◽  
Electrophoretic Deposition ◽  
Uv Light ◽  
Thick Films ◽  
Solid State Reaction Method ◽  
Conventional Solid State Reaction ◽  
Si Substrates ◽  
Improved Stability ◽  
The Stability

A successful electrophoretic deposition (EPD) markedly depends on the stability of the suspension. In this study the role of Triethanolamine (TEA) as a stabilizer in EPD of thick films of TiTe3O8 is presented. TiTe3O8 powders were synthesized via a conventional solid-state-reaction method and dispersed in acetone with and without TEA. The stability of the suspensions was addressed by zeta-potential, UV light and FTIR measurements. The specific adsorption of TEA to TiTe3O8 particles results in a high zeta potential and improved stability of the suspensions, allowing the preparation of high quality TiTe3O8 thick films on Pt coated Si substrates. TiTe3O8 films sintered at 700 °C are dense and homogeneous.

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