Pore-scale visualization of colloid straining and filtration in saturated porous media using micromodels
نویسندگان
چکیده
منابع مشابه
Modeling colloid attachment, straining, and exclusion in saturated porous media.
A conceptual model for colloid transport is developed that accounts for colloid attachment straining, and exclusion. Colloid attachment and detachment is modeled using first-order rate expressions, whereas straining is described using an irreversible first-order straining term that is depth dependent. Exclusion is modeled by adjusting transport parameters for colloid-accessible pore space. Fitt...
متن کاملCoupling of physical and chemical mechanisms of colloid straining in saturated porous media.
Filtration theory does not include the potential influence of pore structure on colloid removal by straining. Conversely, previous research on straining has not considered the possible influence of chemical interactions. Experimental and theoretical studies were therefore undertaken to explore the coupling of physical and chemical mechanisms of colloid straining under unfavorable attachment con...
متن کاملModelling microscale flow and colloid transport in saturated porous media
International Journal of Computational Fluid Dynamics Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t713455064 Modelling microscale flow and colloid transport in saturated porous media Hui Gao a; Jie Han b; Yan Jin b; Lian-Ping Wang a a Department of Mechanical Engineering, University of Delaware, Newark, DE,...
متن کاملQuantifying colloid retention in partially saturated porous media
[1] The transport of colloid-contaminant complexes and colloid-sized pathogens through soil to groundwater is of concern. Visualization and quantification of pore-scale colloid behavior will enable better description and simulation of retention mechanisms at individual surfaces, in contrast to breakthrough curves which only provide an integrated signal. We tested two procedures for quantifying ...
متن کاملInvestigation of pore-scale random porous media using lattice boltzmann method
The permeability and tortuosity of pore-scale two and three-dimensional random porous media were calculated using the Lattice Boltzmann method (LBM). Effects of geometrical parameters of medium on permeability and tortuosity were investigated as well. Two major models of random porous media were reconstructed by computerized tomography method: Randomly distributed rectangular obstacles in a uni...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Water Resources Research
سال: 2006
ISSN: 0043-1397
DOI: 10.1029/2005wr004639