Dispersion Stability and Transport of Nanohybrids through Porous Media

Villamizar, Luis C.; Lohateeraparp, Prapas; Harwell, Jeffrey H.; Resasco, Daniel E.; Shiau, Bor-Jier

doi:10.1007/s11242-012-0073-2

Cited by 11 publications

(6 citation statements)

References 29 publications

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“…Over the past decade, the interest in exploiting nanotechnology for imaging and oil recovery in subsurface reservoirs has grown markedly. Various types of nanoparticles (NP) including silica, carbon nanotubes, iron, and iron oxide have been designed for enhanced oil recovery (EOR), − groundwater remediation, − reservoir imaging, − and CO 2 capture . Superparamagnetic iron oxide nanoparticles may be utilized as contrast agents for cross-well electromagnetic imaging to map fluid flow patterns in reservoirs to guide oil production .…”

Section: Introductionmentioning

confidence: 99%

“…Polymer desolvation at elevated temperatures becomes even more significant at the high salinities encountered in subsurface reservoirs. PVP and hydroxyethyl cellulose (HEC)-coated nanotubes were recently reported to be stable in high salinity brine at moderate temperatures but inevitably were dehydrated and precipitated at higher temperatures. , Weakly acidic polyelectrolytes such as poly(acrylic acid) (PAA) remain soluble in 1 M NaCl at elevated temperatures but precipitate in the presence of divalent cations that interact strongly with carboxylates. ,− In contrast, highly acidic sulfonated polyelectrolytes with low affinities toward divalent cations, such as polystyrenesulfonate (PSS) and 2-acrylamido-2-methylpropanesulfonate (PAMPS), are soluble at high salinities and temperatures. ,, When adsorbed or grafted onto NPs, the solvated polyelectrolyte chains remain extended and provide sufficient steric and electrosteric stabilization. ,, Moreover, zwitterionic sulfobetaine polymers, also known to be soluble and stable at high salinities and temperatures, , have been attached to magnetite by the “grafting through” approach and shown to stabilize NPs under these harsh conditions. , …”

Section: Introductionmentioning

confidence: 99%

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Low Adsorption of Magnetite Nanoparticles with Uniform Polyelectrolyte Coatings in Concentrated Brine on Model Silica and Sandstone

Ureña-Benavides

Lin

Foster

et al. 2016

Ind. Eng. Chem. Res.

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In subsurface imaging and oil recovery where temperatures and salinities are high, it is challenging to design polymer-coated nanoparticles with low retention (high mobility) in porous rock. Herein, the grafting of poly(2-acrylamido-2-methyl-1-propanesulfonic acid-co-acrylic acid) (poly(AMPS-co-AA)) on magnetic iron oxide nanoparticles was sufficiently uniform to achieve low adsorption on model colloidal silica and crushed Berea sandstone in highly concentrated API brine (8% NaCl and 2% CaCl2 by weight). The polymer shell was grafted via amide bonds to an aminosilica layer, which was grown on silica-coated magnetite nanoparticles. The particles were found to be stable against aggregation in American Petroleum Institute (API) brine at 90 °C for 24 h. For IO nanoparticles with ∼23% polymer content, Langmuir adsorption capacities on colloidal silica and crushed Berea Sandstone in batch experiments were extremely low at only 0.07 and 0.09 mg of IO/m2, respectively. Furthermore, upon injection of a 2.5 mg/mL IO suspension in API brine in a column packed with crushed Berea sandstone, the dynamic adsorption of IO nanoparticles was only 0.05 ± 0.01 mg/m2, which is consistent with the batch experiment results. The uniformity and high concentration of solvated poly(AMPS-co-AA) chains on the IO surfaces provided electrosteric stabilization of the nanoparticle dispersions and also weakened the interactions of the nanoparticles with negatively charged silica and sandstone surfaces despite the very large salinities.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Low Adsorption of Magnetite Nanoparticles with Uniform Polyelectrolyte Coatings in Concentrated Brine on Model Silica and Sandstone

Ureña-Benavides

Lin

Foster

et al. 2016

Ind. Eng. Chem. Res.

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“…By contrast, polymer-coated nanoparticles with a charged polymer coating (sPVA-OCB and C16-sPVA-OCB) remained dispersed in the aqueous phase over a range of salinities. As shown in Figures 4 c and d, these polymer-coated nanoparticles do not aggregate even at salinities as high as 16 wt % NaCl. The particles were surface active and stabilized the formation of Pickering macroemulsion phases, which did not break even after weeks at room temperature.…”

Section: Resultsmentioning

confidence: 82%

“…13,14 Harwell and coworkers demonstrated that surfactants could be used to disperse multi-walled carbon nanotubes in aqueous solution and transport them through porous media with little or no adsorption. 15,16 Cui et al found that nanoparticle/surfactant mixtures could be used to deform emulsion droplets into non-spherical shapes due to jamming of the nanoparticles at the oil-water interface. 17 Lead and coworkers reported polymer-coated nanoparticles that could be used to separate oil-water mixtures.…”

Section: Introductionmentioning

confidence: 99%

Segregation of Amphiphilic Polymer-Coated Nanoparticles to Bicontinuous Oil/Water Microemulsion Phases

ShamsiJazeyi

Ruan

et al. 2017

Energy Fuels

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Polymer-coated nanoparticles are interfacially active and have been shown to stabilize macroscopic emulsions of oil and water, also known as Pickering emulsions. However, prior work has not explored the phase behavior of amphiphilic nanoparticles in the presence of bicontinuous microemulsions. Here, we show that properly designed amphiphilic polymercoated nanoparticles spontaneously and preferentially segregate to the bicontinuous microemulsion phases of oil, water, and surfactant. Mixtures of hydrophilic and hydrophobic chains are covalently grafted onto the surface of oxidized carbon black nanoparticles. By sulfating hydrophilic chains, the polymer-coated nanoparticles are stable in the aqueous phase at salinities up to 15 wt % NaCl. These amphiphilic, negatively charged polymer-coated nanoparticles segregate to the bicontinuous microemulsion phases. We analyzed the equilibrium phase behavior of the nanoparticles, measured the interfacial tension, and quantified the domain spacing in the presence of nanoparticles. This work shows a novel route to the design of polymer-coated nanoparticles which are stable at high salinities and preferentially segregate to bicontinuous microemulsion phases.

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“…The nanoparticles reported in the literature as stabilizers are: SWCNTs (single-wall carbon nanotubes)/silica nanoparticles [107], MWCNTs (multi-walled carbon nanotubes)/silica nanoparticles [108] (Figure 19), hydrophilic SiO 2 or partially hydrophobic clay [104,109], spherical nanoparticles of cross-linked polystyrene [110], and zinc oxide (ZnO) or aluminum oxide (Al 2 O 3 ) [111]. Besides these stabilizers, the possibility of using surfactant along with the SWCNTs/silica nanohybrid was studied [107]. This system showed an improved dispersion stability at the expense of reducing the interfacial activity of the nanoparticles, causing them to stay in the aqueous phase ( Figure 20).…”

Section: Nanoemulsionsmentioning

confidence: 99%

Plenty of Room at the Bottom: Nanotechnology as Solution to an Old Issue in Enhanced Oil Recovery

2018

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During the past half-century, the prefix "nano" attached to several words, such as "technology", "motors", "device", and so on has denoted cutting-edge research fields and topics at the forefront of classical scientific disciplines. Possible application fields have been frequently evoked, even if real-life examples are still difficult to find. The present review analyzes how nanotechnology is utilized in enhanced oil recovery (EOR) processes so as to increase the efficiency of mature oilfields. Nanotechnology in EOR is classified into three categories: nanoparticles/nanofluids, nanoemulsions, and nanocatalysts. The advantages at the nanoscale are also described and discussed, including an overview of manufacturing methods as well as the concerns about their possible environmental impacts. Clearly, nanotechnology has the potential to boost EOR techniques, although there are still many questions and drawbacks to be tackled.

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Dispersion Stability and Transport of Nanohybrids through Porous Media

Cited by 11 publications

References 29 publications

Low Adsorption of Magnetite Nanoparticles with Uniform Polyelectrolyte Coatings in Concentrated Brine on Model Silica and Sandstone

Low Adsorption of Magnetite Nanoparticles with Uniform Polyelectrolyte Coatings in Concentrated Brine on Model Silica and Sandstone

Segregation of Amphiphilic Polymer-Coated Nanoparticles to Bicontinuous Oil/Water Microemulsion Phases

Plenty of Room at the Bottom: Nanotechnology as Solution to an Old Issue in Enhanced Oil Recovery

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