The Migration and Deposition Behaviors of Montmorillonite and Kaolinite Particles in a Two-Dimensional Micromodel
The pick-up, migration, deposition, and clogging behaviors of fine particles are ubiquitous in many engineering applications, including contaminant remediation. Deposition and clogging are detrimental to the efficiency of environmental remediation, and their mechanisms are yet to be elucidated. Two-...
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MDPI AG
2022-01-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/3/855 |
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| author | Bate Bate Chao Chen Pengfei Liu Chen Zhou Xiao Chen Shaokai Nie Kexin Chen Yunmin Chen Shuai Zhang |
| author_facet | Bate Bate Chao Chen Pengfei Liu Chen Zhou Xiao Chen Shaokai Nie Kexin Chen Yunmin Chen Shuai Zhang |
| author_sort | Bate Bate |
| collection | DOAJ |
| description | The pick-up, migration, deposition, and clogging behaviors of fine particles are ubiquitous in many engineering applications, including contaminant remediation. Deposition and clogging are detrimental to the efficiency of environmental remediation, and their mechanisms are yet to be elucidated. Two-dimensional microfluidic models were developed to simulate the pore structure of porous media with unified particle sizes in this study. Kaolin and bentonite suspensions were introduced to microfluidic chips to observe their particle deposition and clogging behaviors. Interactions between interparticle forces and particle velocity profiles were investigated via computational fluid dynamics and discrete element method simulations. The results showed that (1) only the velocity vector toward the micropillars and drag forces in the reverse direction were prone to deposition; (2) due to the negligible weight of particles, the Stokes number implied that inertia was not the controlling factor causing deposition; and (3) the salinity of the carrying fluid increased the bentonite deposition because of the shrinkage of the diffused electrical double layer and an increase in aggregation force, whereas it had little effect on kaolin deposition. |
| first_indexed | 2024-03-09T23:36:40Z |
| format | Article |
| id | doaj.art-0c6fbef81a0e435884d0a329674d8163 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T23:36:40Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-0c6fbef81a0e435884d0a329674d81632023-11-23T16:58:15ZengMDPI AGMaterials1996-19442022-01-0115385510.3390/ma15030855The Migration and Deposition Behaviors of Montmorillonite and Kaolinite Particles in a Two-Dimensional MicromodelBate Bate0Chao Chen1Pengfei Liu2Chen Zhou3Xiao Chen4Shaokai Nie5Kexin Chen6Yunmin Chen7Shuai Zhang8MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Institute of Geotechnical Engineering, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaMOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Institute of Geotechnical Engineering, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaMOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Institute of Geotechnical Engineering, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaMOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Institute of Geotechnical Engineering, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaMOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Institute of Geotechnical Engineering, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaMOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Institute of Geotechnical Engineering, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaMOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Institute of Geotechnical Engineering, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaMOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Institute of Geotechnical Engineering, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaMOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Institute of Geotechnical Engineering, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaThe pick-up, migration, deposition, and clogging behaviors of fine particles are ubiquitous in many engineering applications, including contaminant remediation. Deposition and clogging are detrimental to the efficiency of environmental remediation, and their mechanisms are yet to be elucidated. Two-dimensional microfluidic models were developed to simulate the pore structure of porous media with unified particle sizes in this study. Kaolin and bentonite suspensions were introduced to microfluidic chips to observe their particle deposition and clogging behaviors. Interactions between interparticle forces and particle velocity profiles were investigated via computational fluid dynamics and discrete element method simulations. The results showed that (1) only the velocity vector toward the micropillars and drag forces in the reverse direction were prone to deposition; (2) due to the negligible weight of particles, the Stokes number implied that inertia was not the controlling factor causing deposition; and (3) the salinity of the carrying fluid increased the bentonite deposition because of the shrinkage of the diffused electrical double layer and an increase in aggregation force, whereas it had little effect on kaolin deposition.https://www.mdpi.com/1996-1944/15/3/855microfluidic modelbentonite aggregateskaolinite aggregatescloggingspatial distributionsalinity |
| spellingShingle | Bate Bate Chao Chen Pengfei Liu Chen Zhou Xiao Chen Shaokai Nie Kexin Chen Yunmin Chen Shuai Zhang The Migration and Deposition Behaviors of Montmorillonite and Kaolinite Particles in a Two-Dimensional Micromodel Materials microfluidic model bentonite aggregates kaolinite aggregates clogging spatial distribution salinity |
| title | The Migration and Deposition Behaviors of Montmorillonite and Kaolinite Particles in a Two-Dimensional Micromodel |
| title_full | The Migration and Deposition Behaviors of Montmorillonite and Kaolinite Particles in a Two-Dimensional Micromodel |
| title_fullStr | The Migration and Deposition Behaviors of Montmorillonite and Kaolinite Particles in a Two-Dimensional Micromodel |
| title_full_unstemmed | The Migration and Deposition Behaviors of Montmorillonite and Kaolinite Particles in a Two-Dimensional Micromodel |
| title_short | The Migration and Deposition Behaviors of Montmorillonite and Kaolinite Particles in a Two-Dimensional Micromodel |
| title_sort | migration and deposition behaviors of montmorillonite and kaolinite particles in a two dimensional micromodel |
| topic | microfluidic model bentonite aggregates kaolinite aggregates clogging spatial distribution salinity |
| url | https://www.mdpi.com/1996-1944/15/3/855 |
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