Mechanistic Model for Nanoparticle Retention in Porous Media
详细信息 查看全文
- 作者：Tiantian Zhang ; Michael Murphy ; Haiyang Yu ; Chun Huh…
- 关键词：Colloid filtration ; Langmuir adsorption ; Attachment ; Detachment ; Retention ; Single ; phase flow
- 刊名：Transport in Porous Media
- 出版年：2016
- 出版时间：November 2016
- 年：2016
- 卷：115
- 期：2
- 页码：387-406
- 全文大小：1,162 KB
- 刊物类别：Earth and Environmental Science
- 刊物主题：Earth sciences
Geotechnical Engineering
Industrial Chemistry and Chemical Engineering
Civil Engineering
Hydrogeology
Mechanics, Fluids and Thermodynamics - 出版者：Springer Netherlands
- ISSN：1573-1634
- 卷排序：115
文摘
With sizes larger than molecules but smaller than colloidal particles, nanoparticles exhibit unique transport properties in porous media. They can easily pass through typical pore throats in reservoir formations with micron diameters, but may get retained by physicochemical interaction with the pore walls. Based on detailed analysis of nanoparticle retention data from an extensive series of transport experiments, we examine the limitations of classical models of transport and interaction with a stationary phase. Some features of nanoparticle transport and retention are similar to those of adsorbing/desorbing solutes, while others are similar to those of depositing colloids. But neither solute sorption nor colloid filtration alone can explain all nanoparticle retention features, and of particular importance for subsurface applications, neither model can predict the effect of changing flow conditions on nanoparticle retention. The model that accounts for most observations is an independent two-site model which postulates physically independent sites of fixed capacity: one for reversible attachment and the other for irreversible attachment. We validate the model against five distinctly different groups of experimental data from the literature, through a rigorous approach of obtaining the model parameters from one experiment and blind testing against data from other experiments when experimental conditions vary.