Investigation of the Oil-Products Solubility in Water: Qualitative Composition and Quantitative Limits of the Oil-Water Mixtures

An experimental investigation of adsorption of toluene from the aqueous phase on medicinal activated carbon revealed that the process runs by the mechanism of preactivated adsorption. Kinetics of the initial stages of adsorption can be adequately represented by the empirical Elovich adsorption model. An insufficient amount of the adsorbent can cause an unexpected jump in the toluene equilibrium concentration in water caused by transferring this substance from the toluene phase into water through the process of additional adsorption on the coal surface. Adsorption constants and "imaginary" adsorption values have been determined for a series of toluene contents.Résumé : Une étude expérimentale de l'adsorption de toluène à partir d'une phase aqueuse sur du charbon actif médicinal a montré que le processus se déroule selon le mécanisme d'adsorption préactivée. La cinétique des étapes initiales d'adsorption peut être convenablement représentée par le modèle empirique d'adsorption d'Elovich. Une quantité insuffisante d'adsorbant peut entraîner une augmentation rapide et inattendue de la concentration d'équilibre du toluène dans l'eau en raison du transfert de ce dernier de la phase toluénique vers la phase aqueuse par le processus d'adsorption supplémentaire sur la surface de charbon. Les valeurs de la constante d'adsorption et d'adsorption « virtuelle » ont été déterminées pour différentes concentrations de toluène. [Traduit par la Rédaction]

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“…The UV-photometry method 18,19 was used to determine toluene contents in the aqueous systems throughout the entire series of our experiments.…”

Section: Methodsmentioning

confidence: 99%

Adsorption of toluene from the mixed water−toluene system on medicinal activated carbon

Winkler

DiychukVolodymyr

2014

Can. J. Chem.

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“…The results of the nonlinear fitting of Langmuir, Freundlich, Temkin, and Azizian et al isotherms using the solver plugin in the Excel program are presented in Table 3. The saturated concentration (Cs) of Gasoli in water was considered to be 0.35 g.L -1 (Winkler 2009). The obtained corresponding correlation coefficients (R²) showed the process of Gasoil adsorption.…”

Section: Adsorption Isotherms and Thermodynamics Studiesmentioning

confidence: 99%

Synthesis, Application, and Efficiency of the Cellulose@Fe3o4@Zif-8 Carbon Aerogel Magnetic in the Removal of Gasoil from Aqueous Solutions

Tajari,

Bashiri

2023

Preprint

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Synthesis, Application, and Efficiency of the Cellulose@Fe3O4@ZIF-8 Carbon Aerogel Magnetic in the Removal of Gasoil from Aqueous Solutions

Tajari,

Bashiri

2024

Preprint

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Water pollution by Gasoil seriously threatens the environment and human health. Removing Gasoil from the aqueous solutions is critical to maintaining the safety and quality of the water source. This research looked at the feasibility of filtering Gasoil out of water. As a first step, we developed a new adsorbent from Prosopis farcta cellulose fibers by preparing a metal-organic magnetic framework (cellulose@Fe3O4@ZIF-8 carbon aerogel magnetic). The design of experiment method was utilized to explore how variations in pH, Gasoil concentration, and adsorbent dose influenced the elimination of Gasoil. Adsorbent has an adsorption capacity of 7 g.g− 1 and can adsorb 100% of the petroleum floating in water. Time studies demonstrated no time dependence in the Gasoil adsorption process by the adsorbent. Freundlich isotherm described the adsorption of petroleum onto the prepared magnetic carbon aerogel. The free energy, enthalpy, and entropy changes as a part of the Gibbs thermodynamic equation were determined. The proposed magnetic carbon aerogel was an effective adsorbent for extracting petroleum from the aqueous solutions because of its rapid separation and high stability. Even after eight times of use, this adsorbent maintained its relatively high adsorption capacity, and only a 10% drop in adsorption efficiency was observed.

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Investigation of the Oil-Products Solubility in Water: Qualitative Composition and Quantitative Limits of the Oil-Water Mixtures

Cited by 3 publications

References 6 publications

Adsorption of toluene from the mixed water−toluene system on medicinal activated carbon

Adsorption of toluene from the mixed water−toluene system on medicinal activated carbon

Synthesis, Application, and Efficiency of the Cellulose@Fe3o4@Zif-8 Carbon Aerogel Magnetic in the Removal of Gasoil from Aqueous Solutions

Synthesis, Application, and Efficiency of the Cellulose@Fe3O4@ZIF-8 Carbon Aerogel Magnetic in the Removal of Gasoil from Aqueous Solutions

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