Transport of ARS-labeled hydroxyapatite nanoparticles in saturated granular media is influenced by surface charge variability even in the presence of humic acid

Wang, Dengjun; Bradford, Scott A.; Harvey, Ronald W.; Hao, Xihong; Zhou, Dongmei

doi:10.1016/j.jhazmat.2012.05.089

Cited by 45 publications

(17 citation statements)

References 33 publications

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“…Aggregation (or agglomeration) is the most frequentlyreported process across all NP types followed by straining, blocking, ripening, size exclusion, reversible deposition, and irreversible deposition, respectively. Despite this, aggregation and size exclusion in porous media have been widely neglected in continuum modeling studies of NP transport [21,34], at least in comparison with straining [71,92,110,111,[122][123][124][125][126][127][128][129][130][131][132][133][134][135][136][137], blocking [71,102,123,124,127,128,130,131,135,138] and ripening [105-107, 110, 111] effects.…”

Section: Methodsmentioning

confidence: 99%

“…In addition to this criterion, another sign for identifying the straining is the shape of the retained colloid mass profile as function of distance from inlet (RCP). As such, a number of authors [109,110,122,129,172,[225][226][227][228] attributed the retention behavior to straining whenever they observed a hyper-exponential profile for the RCP; that is a marked decreasing rate of deposition with distance from inlet according to an inverse power law. This is in spite of the fact that hyperexponential behavior of the RCP can also be attributed to other factors and mechanisms such as surface roughness [62,92,229,230], concurrent aggregation [231][232][233][234], colloid population heterogeneity [194,235], variations in the pore-scale velocity [127,236,237], and chemical heterogeneity [220,238,239].…”

Section: Criteria and Manifestationmentioning

confidence: 99%

“…Despite extensive allusions to the reflection of transport and deposition mechanisms in the RCP shape among literature studies [e.g., 109,110,122,129,172,[225][226][227], there have been fewer attempts to evaluate the slope of the BTC plateau in regards to the underlying mechanisms of transport. In this paper, the information about various BTC plateau shapes including flat, ascending, and descending in both forms of limited duration of particle injection and continuous injection (experiments without post-flush of particle-free dispersion) were collected in Table 2.…”

Section: Accepted Manuscript 19mentioning

confidence: 99%

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Continuum-based models and concepts for the transport of nanoparticles in saturated porous media: A state-of-the-science review

Babakhani¹,

Bridge

Doong³

et al. 2017

Advances in Colloid and Interface Science

139

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Environmental applications of nanoparticles (NP) increasingly result in widespread NP distribution within porous media where they are subject to various concurrent transport mechanisms including irreversible deposition, attachment/detachment (equilibrium or kinetic), agglomeration, physical straining, site-blocking, ripening, and size exclusion. Fundamental research in NP transport is typically conducted at small scale, and theoretical mechanistic modeling of particle transport in porous media faces challenges when considering the simultaneous effects of transport mechanisms. Continuum modeling approaches, in contrast, are scalable across various scales ranging from column experiments to aquifer. They have also been able to successfully describe the simultaneous occurrence of various transport mechanisms of NP in porous media such as blocking/straining or agglomeration/deposition/detachment. However, the diversity of model equations developed by different authors and the lack of effective approaches for their validation present obstacles to the successful robust application of these models for describing or predicting NP transport phenomena. This review aims to describe consistently all the important NP transport mechanisms along with their representative mathematical continuum models as found in the current scientific literature. Detailed characterizations of each transport phenomenon in regards to their manifestation in the column experiment outcomes, i.e., breakthrough curve (BTC) and residual concentration profile (RCP), are presented to facilitate future interpretations of BTCs and RCPs. The review highlights two NP transport mechanisms, agglomeration and size exclusion, which are potentially of great importance in controlling the fate and transport of NP in the subsurface media yet have been widely neglected in many existing modeling studies. A critical limitation of the continuum modeling approach is the number of parameters used upon application to larger scales and when a series of transport mechanisms are involved. We investigate the use of simplifying assumptions, such as the equilibrium assumption, in modeling the attachment/detachment mechanisms within a continuum modelling framework. While acknowledging criticisms about the use of this assumption for NP deposition on a mechanistic (process) basis, we found that its use as a description of dynamic deposition behavior in a continuum model yields broadly similar results to those arising from a kinetic model. Furthermore, we show that in two dimensional (2-D) continuum models the modeling efficiency based on the Akaike information criterion (AIC) is enhanced for equilibrium vs kinetic with no significant reduction in model performance. This is because fewer parameters are needed for the equilibrium model compared to the kinetic model. Two major transport regimes are identified in the transport of NP within porous media. The first regime is characterized by higher particle-surface attachment affinity than particle-particle attachment affinity, and operat...

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Section: Methodsmentioning

confidence: 99%

Section: Criteria and Manifestationmentioning

confidence: 99%

Section: Accepted Manuscript 19mentioning

confidence: 99%

See 1 more Smart Citation

Continuum-based models and concepts for the transport of nanoparticles in saturated porous media: A state-of-the-science review

Babakhani¹,

Bridge

Doong³

et al. 2017

Advances in Colloid and Interface Science

139

View full text Add to dashboard Cite

show abstract

“…Hyper-exponential RPs have frequently been reported in the literature for colloids, microorganisms, and nanoparticles under unfavorable attachment conditions (Bradford and Bettahar, 2006;Bradford and Toride, 2007;Gargiulo et al, 2007Gargiulo et al, , 2008Wang et al, 2011;Wang et al, 2012a). A variety of reasons for hyper-exponential RPs have been identified, including: straining at grainegrain contacts and surface roughness locations (Shellenberger and Logan, 2001;Bradford et al, 2002Bradford et al, ,2003Yoon et al, 2006), particle aggregation Elimelech, 2006, 2007;Chatterjee and Gupta, 2009;Chatterjee et al, 2010), hydrodynamic factors (Li et al, 2005;Bradford et al, 2009;Wang et al, 2011), and chemical heterogeneity on the sand and colloid (Bolster et al, 1999;Li et al, 2004;Tufenkji and Elimelech, 2005;Tong and Johnson, 2006).…”

Section: Effect Of Grain Sizementioning

confidence: 95%

Transport and retention of multi-walled carbon nanotubes in saturated porous media: Effects of input concentration and grain size

et al. 2013

Self Cite

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“…The mechanisms that these factors influence the transport of nanoparticles through porous media have been well-documented [38,39]. The retention of nanoparticles in secondary energy minima on soil surfaces is enhanced at higher ionic strength because the secondary minimum depth increases with increasing ionic strength [40,41]. The heterogeneously charged soils usually carry patches of iron oxides on their surfaces, and they can enhance the retention of nanoparticles due to strong electrostatic attraction [42,43].…”

Section: Introductionmentioning

confidence: 99%

Mobility of Cellulose Nanocrystals in Porous Media: Effects of Ionic Strength, Iron Oxides, and Soil Colloids

Shen

Zhang

et al. 2020

Nanomaterials

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Understanding the dispersivity and migration of cellulose nanocrystals (CNCs) in porous media is important for exploring their potential for soil and water remediation. In this study, a series of saturated column experiments were conducted to investigate the coupled effects of ionic strength, iron oxides (hematite), and soil colloids on the transport of CNCs through quartz sand and natural soils (red earth and brown earth). Results showed that CNCs had high mobility in oxide-free sand and that iron oxide coating reduced the mobility of CNCs. An analysis of Derjaguin-Landau-Verwey-Overbeek interactions indicated that CNCs exhibited a deep primary minimum, nonexistent maximum repulsion and secondary minimum on hematite-coated sand, favorable for the attachment of CNCs. The maximum effluent percentage of CNCs was 96% in natural soils at 5 mM, but this value decreased to 4% at 50 mM. Soil colloids facilitated the transport of CNCs in brown earth with larger effect at higher ionic strength. The ionic strength effect was larger in natural soils than sand and in red earth than brown earth. The study showed that CNCs can travel 0.2 m to 72 m in porous media, depending on soil properties, solution chemistry, and soil colloids.

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Transport of ARS-labeled hydroxyapatite nanoparticles in saturated granular media is influenced by surface charge variability even in the presence of humic acid

Cited by 45 publications

References 33 publications

Continuum-based models and concepts for the transport of nanoparticles in saturated porous media: A state-of-the-science review

Continuum-based models and concepts for the transport of nanoparticles in saturated porous media: A state-of-the-science review

Transport and retention of multi-walled carbon nanotubes in saturated porous media: Effects of input concentration and grain size

Mobility of Cellulose Nanocrystals in Porous Media: Effects of Ionic Strength, Iron Oxides, and Soil Colloids

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