Thermodynamic method for prediction of surfactant-modified oil droplet contact angle

Morton, S. A.; Keffer, David J.; Counce, Robert M.; DePaoli, David W.; Hu, Michael Z.

doi:10.1016/j.jcis.2003.08.006

Cited by 21 publications

(18 citation statements)

References 27 publications

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“…where K D is the MB partition coefficient (mol·mol −1 ), ΔH is adsorption enthalpy change (J·mol −1 ), T is temperature (K), ΔS is adsorption entropy change (J·K −1 ·mol −1 ), and ΔG is Gibbs free energy change (J·mol −1 ) [31][32][33].…”

Section: Adsorption Thermodynamicsmentioning

confidence: 99%

Adsorption of cationic dye from water using thermo-sensitive colloid composed of methylcellulose and sodium alginate

Jiang

Zhang

et al. 2015

Colloid Polym Sci

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The adsorption behaviors of methylene blue (MB) by a thermo-sensitive colloid composed of sodium alginate and methylcellulose (TSC-SA/MC) have been investigated. The results showed that the dosage of SA had an important effect on the adsorption capability of TSC-SA/MC. The maximum of adsorption capability appeared at m SA /m MC of 0.3:1, and among all the differences in adsorption capability between 30 and 60°C, 61 mg·g −1 was the maximum adsorption difference appeared at m SA /m MC of 0.3:1. The adsorption capability of TSC-SA/MC increased with pH from 2 to 11, decreased with temperature from 30 to 70°C. The adsorption data were not well fitted by Langmuir, Freundlich, Temkin, or DubininRadushkevich model, suggesting the adsorption of MB on TSC-SA/MC did not belong to a single adsorption style. The maximum adsorption capacity of adsorption isotherm data was 1098.5 mg·g −1 . The adsorption of MB by TSC-SA/MC fitted the pseudo-second-order model, and the main resistances for MB adsorption by TSC-SA/MC involved the external mass transfer, intraparticle mass transfer, and sorption on active site. The ΔH of MB adsorption by TSC-SA/MC was −48.26 kJ·mol −1 , and the ΔS was −143.00 J·K −1 ·mol −1 . The ΔG indicated that the adsorption could change from a spontaneous process to a nonspontaneous process with temperature increase. Both physical and chemical adsorption took place in the MB adsorption process. Fourier transform infrared spectroscopy (FTIR) spectra of filter cakes of TSC-SA/MC before and after adsorption of MB showed that the adsorption process for MB by TSC-SA/MC had a quite complicated mechanism, and the successful adsorption involved many chemical groups.

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Section: Adsorption Thermodynamicsmentioning

confidence: 99%

Adsorption of cationic dye from water using thermo-sensitive colloid composed of methylcellulose and sodium alginate

Jiang

Zhang

et al. 2015

Colloid Polym Sci

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“…The enthalpy is dependent on the volume of the adsorbed phase because initially the volume of the adsorbed phase is zero [24]. These approximations were applied to the adsorption from aqueous solutions of organic substances [8,15,[25][26][27][28].…”

Section: Thermodynamic Parametersmentioning

confidence: 99%

Characterization and adsorption properties of tetrabutylammonium montmorillonite (TBAM) clay: Thermodynamic and kinetic calculations

Akçay

2006

Journal of Colloid and Interface Science

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“…The enthalpy depends on the volume of the adsorbed phase because initially the volume of the adsorbed phase is zero [25]. These approximations were applied to the adsorption of organic substances [26][27][28][29] from aqueous solutions. Thus, we will approximate the differential or molar enthalpy in the solution ( h a ) as shown in the equation…”

Section: Thermodynamic Parametersmentioning

confidence: 99%

Removal of 2,4-dichlorophenoxyacetic acid from aqueous solutions by partially characterized organophilic sepiolite: thermodynamic and kinetic calculations

Akçay

Yurdakoç

2005

Journal of Colloid and Interface Science

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Thermodynamic method for prediction of surfactant-modified oil droplet contact angle

Cited by 21 publications

References 27 publications

Adsorption of cationic dye from water using thermo-sensitive colloid composed of methylcellulose and sodium alginate

Adsorption of cationic dye from water using thermo-sensitive colloid composed of methylcellulose and sodium alginate

Characterization and adsorption properties of tetrabutylammonium montmorillonite (TBAM) clay: Thermodynamic and kinetic calculations

Removal of 2,4-dichlorophenoxyacetic acid from aqueous solutions by partially characterized organophilic sepiolite: thermodynamic and kinetic calculations

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