Insight into particle detachment in clogging of porous media; a pore scale study using lattice Boltzmann method

Parvan, Amin; Jafari, Saeed; Rahnama, Mohammad; Norouzi-Apourvari, Saeid; Raoof, Amir

doi:10.1016/j.advwatres.2021.103888

Cited by 20 publications

(5 citation statements)

References 69 publications

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“…The calculation of fine particle migration and clogging in larger‐scale soil, such as the representative volumetric element scale, often neglects the influence of pore morphology. The intricate pore structure in porous media results in a complex flow field, causing clogging to be more stochastic (Dincau et al., 2023; Parvan et al., 2021). Therefore, certain assumptions are requisite prior to the extended application of Equation for calculating clogging‐erosion in porous media.…”

Section: Discussionmentioning

confidence: 99%

“…At the initial moment, fluid pressure acts at the boundaries and varies along the flow direction according to Darcy's law. The permeability coefficients of each grid are calculated based on the Kozeny‐Carman equation (Carrier, 2003; Parvan et al., 2021). It is assumed that fluid pressure at the inflow boundaries of individual grids decreases along the flow direction, resulting in a pressure drop ∆ p g between the inflow and outflow boundaries.…”

Section: Discussionmentioning

confidence: 99%

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Clogging and Unclogging of Fine Particles in Porous Media: Micromechanical Insights From an Analog Pore System

Yin,

Cui,

Jing

2024

Water Resources Research

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Pore clogging and unclogging in porous media are ubiquitous in subsurface hydrologic processes, which have been studied extensively at various scales ranging from a single pore to porous‐medium samples. However, it remains unclear how fluid flow, particle rearrangement, and the arching effect typical of cone‐shaped pore geometry interact and how they are captured by a pressure drop model at the macroscopic scale. Here, we investigate the pore‐scale feedback mechanisms between fluid flow and pore clogging and unclogging using a fully resolved fluid‐particle coupling approach (lattice Boltzmann method‐discrete element method). We first propose to use a truncated‐cone pore to represent realistic pore geometries revealed by X‐ray images of prepared sand packing. Then, our simulations indicate that the pore cone angle significantly influences the pressure drop associated with the clogging process by enhancing particle contacts due to arching. A modified Ergun equation is developed to consider this geometric effect. At the microscale, clogging can be explained by the interparticle force statistics; a few particles in an arch (or a dome) take the majority of hydrodynamic pressure. The maximum interparticle force is positively proportional to the particle Reynolds number and negatively associated with the tangent of the pore cone angle. Finally, a formula is established utilizing fluid characteristics and pore cone angle to compute the maximal interparticle force. Our findings, especially a modified pressure drop model that accounts for pore geometry resistance, provide guidance for applying pore‐scale models of clogging and unclogging to large‐scale subsurface fines transportation issues, including seepage‐induced landslides, stream bank failure, and groundwater recharge.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Clogging and Unclogging of Fine Particles in Porous Media: Micromechanical Insights From an Analog Pore System

Yin,

Cui,

Jing

2024

Water Resources Research

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“…Therefore, despite complete retention occurring for the Mt-nZVI heteroaggregates at IS ≥ 0.1 M, a large fraction of attached colloid can be re-entrained into the pore solution during transient in solution chemistry. Recent microscopic observations [61][62][63][64] showed that such continuous capture and release could cause the very long-distance travel of colloids in porous media.…”

Section: Particle Release In Sand Porous Mediamentioning

confidence: 99%

Significant Mobility of Novel Heteroaggregates of Montmorillonite Microparticles with Nanoscale Zerovalent Irons in Saturated Porous Media

Shen

Teng

Zheng

et al. 2022

Toxics

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This study conducted laboratory column experiments to systematically examine the transport of novel heteroaggregates of montmorillonite (Mt) microparticles with nanoscale zerovalent irons (nZVIs) in saturated sand at solution ionic strengths (ISs) ranging from 0.001 to 0.2 M. Spherical nZVIs were synthesized using the liquid phase reduction method and were attached on the plate-shaped Mt surfaces in monolayer. While complete deposition occurred for nZVIs in sand, significant transport was observed for Mt-nZVI heteroaggregates at IS ≤ 0.01 M despite the transport decrease with an increasing loading concentration of nZVIs on Mt. The increased mobility of Mt-nZVI heteroaggregates was because the attractions between nZVIs and sand collectors were reduced by the electrostatic repulsions between the Mt and the collector surfaces, which led to a decreased deposition in the sand columns. Complete deposition occurred for the Mt-nZVI heteroaggregates at IS ≥ 0.1 M due to a favorable deposition at Derjaguin–Landau–Verwey–Overbeek (DLVO) primary energy minima. Interestingly, a large fraction of the deposited heteroaggregates was released by reducing IS because of a monotonic decrease of interaction energy with separation distance for the heteroaggregates at low ISs (resulting in repulsive forces), in contrast to the irreversible deposition of nZVIs. Therefore, the fabricated heteroaggregates could also have high mobility in subsurfaces with saline pore water through continuous capture and release using multiple injections of water with low ISs. Our study was the first to examine the transport of heteroaggregates of a plate-like particle with spherical nanoparticles in porous media; the results have important implications in the use of nanoscale zerovalent iron for in situ soil and groundwater remediation.

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“…But [ 7 , 42 ], did not take into account the migration of colloids and fines. Only a few theoretical [ 78 , 79 ] and experimental [ 80 , 81 ] works discuss the influence of load and colloids on permeability of porous media while these phenomena are studied separately in sufficient detail [ 6 , 64 , [82] , [83] , [84] , [85] , [86] , [87] , [88] , [89] , [90] , [91] , [92] , [93] , [94] , [95] , [96] , [97] , [98] , [99] , [100] , [101] , [102] , [103] , [104] ]. The novelty and purpose of this work is to develop a methodology and evaluate the effect of colloids on porous media's transport properties during cyclic loading.…”

Section: Introductionmentioning

confidence: 99%

Cyclic confining pressure and rock permeability: Mechanical compaction or fines migration

Kozhevnikov,

Turbakov,

Riabokon

et al. 2023

Heliyon

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Insight into particle detachment in clogging of porous media; a pore scale study using lattice Boltzmann method

Cited by 20 publications

References 69 publications

Clogging and Unclogging of Fine Particles in Porous Media: Micromechanical Insights From an Analog Pore System

Clogging and Unclogging of Fine Particles in Porous Media: Micromechanical Insights From an Analog Pore System

Significant Mobility of Novel Heteroaggregates of Montmorillonite Microparticles with Nanoscale Zerovalent Irons in Saturated Porous Media

Cyclic confining pressure and rock permeability: Mechanical compaction or fines migration

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