Investigation of heat capacity and viscosity enhancements of binary carbonate salt mixture with SiO2 nanoparticles

Far, Baha El; Rizvi, Syed Muhammad Mujtaba; Nayfeh, Yousof; Shin, Donghyun

doi:10.1016/j.ijheatmasstransfer.2020.119789

Cited by 15 publications

(5 citation statements)

References 15 publications

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“…The presence of salt may microaggregate near the silica nanoparticle and crystallize on the nanoparticle surface. This crystallization of salts further grows and forms a dendritic structure . Besides, the EDXA results of the NF3-treated rough quartz substrate show a decrease in carbon content from 51.07 to 4.62% and an increase in sodium and silica concentration from 3.21 to 60.39%.…”

Section: Resultsmentioning

confidence: 95%

“…This crystallization of salts further grows and forms a dendritic structure. 30 Besides, the EDXA results of the NF3-treated rough quartz substrate show a decrease in carbon content from 51.07 to 4.62% and an increase in sodium and silica concentration from 3.21 to 60.39%. This decrease in carbon and increase in silica content signifies the wettability alteration of rough quartz surfaces by low-sal-silica nanofluid.…”

Section: Effect Of Ph On the Stability Of Low-sal-silicamentioning

confidence: 93%

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Silica Nanofluids in Low Salinity Water for Wettability Alteration of the Mineral Surface and the Effect of Surface Roughness

Seetharaman,

Sangwai

2024

Energy Fuels

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Surface roughness plays a crucial role in oil recovery operation. Wenzel's equation relates the contact angle of a liquid droplet on a rough surface to its intrinsic contact angle and surface roughness. Herein, we report the impact of surface roughness on the wettability of rough quartz surfaces using silica nanofluid in low-salinity (low-sal) water under different temperature and pressure conditions. We employed atomic microscopy to analyze the roughness of a quartz surface that shows varying degrees of roughness. The results of nanofluid stability reveal that one of the key factors enhancing the colloidal stability of silica nanoparticles is the electrolyte's pH. Increasing the surface roughness of the quartz substrate from 34.6 to 415 nm decreased the contact angle of crude oil from 63 to 30°. Furthermore, a decrease in contact angle with an increase in temperature is prominent for the nanofluid on highly rough surfaces. Likewise, a slight increase in surface roughness exaggerates the effect of pressure on the contact angle of the quartz surface. Scanning electron microscopy and energy-dispersive X-ray analyses confirm the dendritic structure of the low-sal-silica nanofluid on the rough surface. Our study strengthens the hypothesis that surface roughness together with surface chemistry is the key factor in determining quartz surface wettability.

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Section: Resultsmentioning

confidence: 95%

Section: Effect Of Ph On the Stability Of Low-sal-silicamentioning

confidence: 93%

Silica Nanofluids in Low Salinity Water for Wettability Alteration of the Mineral Surface and the Effect of Surface Roughness

Seetharaman,

Sangwai

2024

Energy Fuels

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“…The variations in viscosity that they found very much depended on the nanoparticle concentration, with merely a 6% increase for the nanofluid with MWCNT 1 wt.%, but up to 80% and 1080% for MWCNT 2 wt.% and MWCNT 5 wt.%, respectively. El Far et al [74] also worked with a K 2 CO 3 -Li 2 CO 3 based nanofluid, including silica nanoparticles and that same nanofluid with the addition of a small amount of NaOH to prevent a dendritic nanostructure from forming around nanoparticles, which is believed to enhance specific heat. The addition of SiO 2 nanoparticles brought about a 34% increase in nanofluid viscosity compared to the base fluid, and this increase was only 8% for the nanofluid with NaOH.…”

Section: Viscositymentioning

confidence: 99%

“…Moreover, the effect of adding NaOH to nanofluids to prevent these nanostructures from forming has also been studied in the works by Tiznobaik and Shin [96], El Far et al [74], Rizvi et al [92] and Rizvi and Shin [48]. In the works of Shin [63] and Shin and Banerjee [86], two different regions were observed in nanofluids, namely coarse and fine powder, and a later analysis of the composition of one of the samples determined that the molar ratio of K 2 CO 3 -Li 2 CO 3 had slightly changed.…”

Section: Specific Heatmentioning

confidence: 99%

K2CO3–Li2CO3 molten carbonate mixtures and their nanofluids for thermal energy storage: An overview of the literature

Navarrete

Nithiyanantham

Hernández

et al. 2022

Solar Energy Materials and Solar Cells

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“…The viscosity increase depends on several factors including particle size and shape, particle concentration and extent of particle aggregation, and the presence of surfactants/dispersants [27]. Far et al [28] observed the formation of a dendritic nanostructure when salt crystallizes on a nanoparticle surface. The formation of the nanostructures and the aggregation of nanoparticles are regarded as the primary reasons for the viscosity increase.…”

Section: Increased Viscositymentioning

confidence: 99%

Particle Technology in the Formulation and Fabrication of Thermal Energy Storage Materials

Zhu

Jin²,

Zhang

et al. 2022

Chemie Ingenieur Technik

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Ing. Joachim Werther on the occasion of his 80th birthdayThis article reviews the state of the art of the formulation and fabrication of sensible, latent, and thermochemical thermal energy storage (TES) materials with special focus on the role of particle technology in enhancing the performance of these materials. Molten salt-based sensible TES materials have been intensively studied, particularly the use of doped nanoparticles for enhancing specific heat capacity and thermal conductivity. For latent TES, the inclusion of property enhancers is among the most effective approaches to address the low thermal conductivity and supercooling issues of phase change materials (PCMs), whereas the encapsulation of PCMs and structurally stabilized composite PCMs are the favorable methods to address leakage and chemical incompatibility challenges. Thermochemical TES materials are often incorporated with an inert or an active host matrix for structural stabilization.

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Investigation of heat capacity and viscosity enhancements of binary carbonate salt mixture with SiO2 nanoparticles

Cited by 15 publications

References 15 publications

Silica Nanofluids in Low Salinity Water for Wettability Alteration of the Mineral Surface and the Effect of Surface Roughness

Silica Nanofluids in Low Salinity Water for Wettability Alteration of the Mineral Surface and the Effect of Surface Roughness

K2CO3–Li2CO3 molten carbonate mixtures and their nanofluids for thermal energy storage: An overview of the literature

Particle Technology in the Formulation and Fabrication of Thermal Energy Storage Materials

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