Adsorption of oleic acid from sunflower oil on Amberlyst A26 (OH)

İlgen, Oğuzhan

doi:10.1016/j.fuproc.2013.08.012

Cited by 22 publications

(30 citation statements)

References 22 publications

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“…2, it is possible to observe that the kinetic model of pseudo-second order presented the best fit of the data, with R² values equal or higher than 0.995 for all sorbates tested, whereas the R² obtained for the pseudo-first-order model ranged between 0.032 and 0.862, indicating a very poor fitting. Other kinetic studies also indicated that a pseudosecond-order fitting generally gives the best fitting overall, such as Ilgen (2014), who reported the pseudo-second-order as the kinetic model in the sorption of oleic acid by amberlyst A26 (OH); Sokker et al (2011), who studied the sorption kinetics of crude oil by a chitosan/polyacrylamide-based hydrogel; Ahmad et al (2005), who studied the sorption of palm oil residues by rubber powder, and Peng et al (2013), who used cellulase-treated corn stalk in the sorption of oil. Research, Society and Development, v. 10, n. 14, e554101422671, 2021 (CC BY 4.0) The pseudo-first and pseudo-second-order kinetics are generally related to the underlying adsorption mechanism of the system; however, recent analyses cast doubt on the real applicability of using the kinetic models to determine the absorption mechanism (Simonin, 2016).…”

Section: Sorption Kineticsmentioning

confidence: 99%

Sorption of oils by a commercial non-woven polypropylene sorbent

Zaro

Silvestre

Fedrigo

et al. 2021

RSD

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Non-woven polypropylene (PP) sorbents are materials that can be used in oil recovery following spills, which are interesting alternatives to remediate contaminated areas. This work aimed to characterize a non-woven sorbent made of PP. The physicochemical characteristics of the material, sorption capacity, kinetics, and adsorption isotherms were evaluated. The physicochemical study included the determination of thickness, density, thermal and chemical properties of the sorbent, and fiber morphology. Sorption tests were performed according to the standard method ASTM 726-12. The kinetic models of pseudo-first and pseudo-second order were tested. The fit of the experimental data to the adsorption isotherms of Langmuir, Freundlich, and Temkin was also carried out. The sorbates used in the tests were diesel, petroleum, and lubricant oil. The sorption capacity of the PP nonwoven blanket relative to diesel, petroleum, and lubricant oil in long-term tests was 5.3, 12.3, and 18.7 g∙g-¹, with increasing values when sorbates were more viscous. The results of the short and long-term tests did not show a statistical difference in the sorption capacity of the blanket. The kinetic study showed that the sorption of the three sorbates followed pseudo-second-order kinetics. The diesel oil presented a better fit to the Langmuir isotherm (R² = 0.998), whereas the petroleum presented an excellent fit to all three isotherms (R² = 0.996-0.999). Regarding sorbent reusability, the sorption capacity stabilized after the second cycle, and the samples whose sorbate removal was carried out by centrifugation have presented and maintained the highest sorption capacities.

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Section: Sorption Kineticsmentioning

confidence: 99%

Sorption of oils by a commercial non-woven polypropylene sorbent

Zaro

Silvestre

Fedrigo

et al. 2021

RSD

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“…For example, the maximum adsorption of oleic acid was found 233.01 g.kg -1 , 312.25 g.kg -1 , and 360.20 g.kg -1 from heptane on Indion 790, Indion 860, and R-Ag + resin, respectively. Literature reports adsorptive separation of fatty acids using various adsorbents such as zeolites, 18 strong anion exchange resin, 19,20 weak base anion exchange resins, 21 iron oxide, 22 activated carbon, 23 mixed bed ion-exchange resins, 24 rice hull ash, [25][26][27] and clay. [28][29][30]42 The summary of previous work on adsorption of fatty acid is given in Table 5 with relevant details.…”

Section: Adsorption Of Oleic Acid 311 Screening Of Adsorbentmentioning

confidence: 99%

“…Adsorption is an attractive method for separation of fatty acids owing to its simple design, operation, cost-effectiveness, and energy efficiency. Literature reports adsorptive separation of fatty acids using various adsorbents such as zeolites, 18 strong anion exchange resin, 19,20 weak base anion exchange resins, 21 iron oxide, 22 activated carbon, 23 mixed bed ion-exchange resins, 24 rice hull ash, [25][26][27] and clay. [28][29][30] These investigations primarily report adsorption equilibrium data and thermodynamic parameters.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive Removal of Unsaturated Fatty Acids Using Ion Exchange Resins

Chavan

Khedkar²,

Satpute

et al. 2020

J. Chem. Eng. Data

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The main aim of the present investigation was to elucidate the efficacy of silver ion chromatography for selective separation of unsaturated (oleic, linoleic, and linolenic) fatty acids on a preparative scale. Accordingly, the present work was predominantly divided into two parts. In the first part, adsorption of oleic acid was carried out using commercially available ion exchange resins and silver-ion-loaded resins (R-Ag+) prepared in the laboratory from nonpolar and polar solvents in a batch mode. The maximum adsorption of oleic acid was found on R-Ag+ (454.55 g·kg–1) compared with other commercially available ion exchange resins from heptane at ambient temperature (303 K). The effect of temperature on the adsorption of oleic acid on R-Ag+ from heptane was investigated at 303, 313, and 323 K. The adsorption of oleic acid was favored at 303 K and decreased with a further increase in temperature. Experimental batch equilibrium data were modeled using the Langmuir and Freundlich isotherms. Further, thermodynamic parameters viz., ΔGads 0, ΔHads 0, and ΔSads 0, were estimated. The negative values of ΔGads 0 and ΔHads 0 show that the adsorption of oleic acid on R-Ag+ was spontaneous and exothermic in nature. Based on the results obtained in the first part, the R-Ag+ resin was subjected to adsorption of fatty acids from industrial fatty acids mixture using heptane as a solvent at 303 K. A multicomponent Freundlich isotherm was used to model experimental batch equilibrium data. Linolenic acid and linoleic acid were preferentially adsorbed over oleic acid with selectivities of 1.40 and 1.16, respectively, from industrial fatty acids mixture.

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“…In fact, the use of Amberlyst A26 OH resin in the deacidification of refined sunflower oil acidified with oleic acid without the presence of solvent (Ilgen, 2014), of degummed soybean oil containing natural acidity in isopropanol (Deboni et al., 2013) and of bleached palm oil dissolved in n‐propanol (Cuevas et al., 2013) was successfully carried out, reducing the acid content from 11.0% to 0.2%, 2.19% to 0.04%, and 3.35% to 0.11%, respectively. In addition, Cuevas et al.…”

Section: Introductionmentioning

confidence: 99%

Preservation of minor components and deacidification of rice bran oil using strong anionic resin

Cuevas

Capellini

Rodrigues

et al. 2020

J Food Process Preserv

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Rice bran oil presents high levels of tocopherols/tocotrienols and gamma‐oryzanol, which are recognized for their nutraceutical effects. However, these minor compounds can be sensitive to the traditional refining processes, which necessarily include a deacidification step. Therefore, alternative processes are required to preserve these nutraceuticals in the deacidified oil. This study aimed to investigate an alternative deacidification process based on strongly basic anion exchange resin. Aiming to evaluate the adsorption process efficiencies, breakthrough curves were obtained for systems containing Amberlyst A26 OH and a miscella composed of 50% by mass of degummed rice bran oil, with natural acidity (9.74% by mass), and n‐propanol. The resin showed a high capacity for removing free fatty acids (90%–99% removal efficiency), and the adsorption process yielded deacidified rice bran oil with a reduced phosphorus content (2.2 mg/kg), preserving 83% of the gamma‐oryzanol and 100% of the tocopherols/tocotrienols. Practical applications A softer deacidification process than traditional methods is proposed in this study. It permits to remove free fatty acids, preserving minor compounds of interest, notably nutraceutical compounds in the deacidified oil. The use of anion exchange resins in this step of refining process minimizes the effluent generation when compared to chemical refining, besides could be accomplished under milder conditions of pressure and temperature than physical refining.

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Adsorption of oleic acid from sunflower oil on Amberlyst A26 (OH)

Cited by 22 publications

References 22 publications

Sorption of oils by a commercial non-woven polypropylene sorbent

Sorption of oils by a commercial non-woven polypropylene sorbent

Adsorptive Removal of Unsaturated Fatty Acids Using Ion Exchange Resins

Preservation of minor components and deacidification of rice bran oil using strong anionic resin

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