Liquid-liquid equilibria of water + ethanol + castor oil and the effect of cellulose nanocrystal/Fe3O4 and lignin/Fe3O4 nanoparticles

Hasan, Mohammad Jahid; Yeganeh, Fariba; Ciric, Amy R.; Chen, Peng; Vasquez, Erick S.; Ureña-Benavides, Esteban E.

doi:10.1016/j.jct.2023.107007

Cited by 4 publications

(2 citation statements)

References 31 publications

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“…The Fe 3 O 4 nanoparticles were encapsulated with Kraft lignin solubilized in 1 wt% ammonium hydroxide to produce a 3:1 w:w ratio of lignin@Fe 3 O 4 nanoparticles. The detailed procedure to synthesize lignin@Fe 3 O 4 nanoparticles has been reported in our previous publications [33][34][35], and a summary of the procedure can be found in the supplementary materials.…”

Section: Methodsmentioning

confidence: 99%

Experimental Thermal Conductivity Studies of Agar-Based Aqueous Suspensions with Lignin Magnetic Nanocomposites

Gautam,

Nabat Al-Ajrash,

Hasan

et al. 2024

Magnetochemistry

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Nanoparticle additives increase the thermal conductivity of conventional heat transfer fluids at low concentrations, which leads to improved heat transfer fluids and processes. This study investigates lignin-coated magnetic nanocomposites (lignin@Fe3O4) as a novel bio-based magnetic nanoparticle additive to enhance the thermal conductivity of aqueous-based fluids. Kraft lignin was used to encapsulate the Fe3O4 nanoparticles to prevent agglomeration and oxidation of the magnetic nanoparticles. Lignin@Fe3O4 nanoparticles were prepared using a pH-driven co-precipitation method with a 3:1 lignin to magnetite ratio and characterized by X-ray diffraction, FT-IR, thermogravimetric analysis, and transmission electron microscopy. The magnetic properties were characterized using a vibrating sample magnetometer. Once fully characterized, lignin@Fe3O4 nanoparticles were dispersed in aqueous 0.1% w/v agar–water solutions at five different concentrations, from 0.001% w/v to 0.005% w/v. Thermal conductivity measurements were performed using the transient line heat source method at various temperatures. A maximum enhancement of 10% in thermal conductivity was achieved after adding 0.005% w/v lignin@Fe3O4 to the agar-based aqueous suspension at 45 °C. At room temperature (25 °C), the thermal conductivity of lignin@Fe3O4 and uncoated Fe3O4 agar-based suspensions was characterized at varying magnetic fields from 0 to 0.04 T, which were generated using a permanent magnet. For this analysis, the thermal conductivity of lignin magnetic nanosuspensions initially increased, showing a 5% maximum peak increase after applying a 0.02 T magnetic field, followed by a decreasing thermal conductivity at higher magnetic fields up to 0.04 T. This result is attributed to induced magnetic nanoparticle aggregation under external applied magnetic fields. Overall, this work demonstrates that lignin-coated Fe3O4 nanosuspension at low concentrations slightly increases the thermal conductivity of agar aqueous-based solutions, using a simple permanent magnet at room temperature or by adjusting temperature without any externally applied magnetic field.

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Section: Methodsmentioning

confidence: 99%

Experimental Thermal Conductivity Studies of Agar-Based Aqueous Suspensions with Lignin Magnetic Nanocomposites

Gautam,

Nabat Al-Ajrash,

Hasan

et al. 2024

Magnetochemistry

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“…Nanoparticle adsorption at liquid-liquid interfaces plays a pivotal role in stabilizing Pickering emulsions and foams, with applications in targeted drug delivery, oil recovery, dye degradation, magnetic nanouids, Pickering emulsions, and liquid-liquid extraction processes. [1][2][3][4][5][6][7][8][9][10] Recent advancements in synthetic chemistry for the development of multi-responsive nanoparticles allow on-demand responses including interfacial adsorption-desorption capabilities, making magnetic nanoparticles very useful in separation technologies. [11][12][13] For example, functionalized magnetic carbonyl iron particles allow the preparation of Pickering emulsions with controllable stability and on-off demulsication properties.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive properties and on-demand magnetic response of lignin@Fe₃O₄ nanoparticles at castor oil–water interfaces

et al. 2023

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Novel castor oil/water/ethanol Pickering emulsions stabilized by magnetic nanoparticles and magnetically controllable demulsification

Hasan,

Chen,

Dominick

et al. 2023

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Liquid-liquid equilibria of water + ethanol + castor oil and the effect of cellulose nanocrystal/Fe3O4 and lignin/Fe3O4 nanoparticles

Cited by 4 publications

References 31 publications

Experimental Thermal Conductivity Studies of Agar-Based Aqueous Suspensions with Lignin Magnetic Nanocomposites

Experimental Thermal Conductivity Studies of Agar-Based Aqueous Suspensions with Lignin Magnetic Nanocomposites

Adsorptive properties and on-demand magnetic response of lignin@Fe₃O₄ nanoparticles at castor oil–water interfaces

Novel castor oil/water/ethanol Pickering emulsions stabilized by magnetic nanoparticles and magnetically controllable demulsification

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Liquid-liquid equilibria of water + ethanol + castor oil and the effect of cellulose nanocrystal/Fe3O4 and lignin/Fe3O4 nanoparticles

Cited by 4 publications

References 31 publications

Experimental Thermal Conductivity Studies of Agar-Based Aqueous Suspensions with Lignin Magnetic Nanocomposites

Experimental Thermal Conductivity Studies of Agar-Based Aqueous Suspensions with Lignin Magnetic Nanocomposites

Adsorptive properties and on-demand magnetic response of lignin@Fe3O4 nanoparticles at castor oil–water interfaces

Novel castor oil/water/ethanol Pickering emulsions stabilized by magnetic nanoparticles and magnetically controllable demulsification

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Adsorptive properties and on-demand magnetic response of lignin@Fe₃O₄ nanoparticles at castor oil–water interfaces