Academic literature on the topic 'Emulsion extraction'

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Journal articles on the topic "Emulsion extraction"

1

Arun, Varun, Samsnavith Segu Jalaludeen, Suryarajan Jayakumar, and Samdavid Swaminathan. "Effect of contacting pattern and various surfactants on phenol extraction efficiency using emulsion liquid membrane." International Journal of Chemical Reactor Engineering 19, no. 7 (2021): 739–47. http://dx.doi.org/10.1515/ijcre-2020-0156.

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Abstract Emulsions prepared using different surfactants, including Span-80, BKC and CTAB, are studied for their stability and phenol remsoval efficiency. The effect of contacting pattern on ELM extraction efficiency is compared in Beaker – Stirrer apparatus and Bubble Flow Recirculation column. The emulsion prepared using Span-80 is relatively more stable than emulsions prepared using other surfactants. The emulsion stability during the extraction process is relatively higher in the Bubble Flow Recirculation column (15 min) than in the Beaker – Stirrer apparatus (10 min). At optimized conditions, the phenol removal efficiency of the emulsion prepared using Span-80 in Beaker – Stirrer apparatus is 96% and in Bubble Flow Recirculation column is 78%. Kinetic studies reveal that the extraction follows zeroth-order kinetics with an average phenol effective diffusivity of 0.0004 s at an initial phenol concentration ranging from 100–500 PPM.
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2

V. Yefimov, Stanislav, and Pedro Gil. "One Step Extraction Method, Sample Preparation Procedure for HPLC/MS Analysis of Altrenogest Sesame Oil Solutions [Extraction of altrenogest from sesame oil with acetonitrile, HPLC/MS]." South Asian Research Journal of Pharmaceutical Sciences 4, no. 1 (2022): 17–21. http://dx.doi.org/10.36346/sarjps.2022.v04i01.003.

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The extraction of altrenogest with acetonitrile from sesame oil is not an easy task due to the formation of a stable emulsion. The problem of extracting more than 99% of altrenogest from sesame oil with acetonitrile was solved. The optimal ratio of extractant to extractor was established. This approach allowed for a quantitative analysis of altrenogest in sesame oil solutions by HPLC/MS. A generalization of the proposed approach to cases of altrenogest extraction from stable emulsions was discussed.
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3

Längauer, David, Yu-Ying Lin, Wei-Hsin Chen, Chao-Wen Wang, Michal Šafář, and Vladimír Čablík. "Simultaneous Extraction and Emulsification of Food Waste Liquefaction Bio-Oil." Energies 11, no. 11 (2018): 3031. http://dx.doi.org/10.3390/en11113031.

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Biomass-derived bio-oil is a sustainable and renewable energy resource, and liquefaction is a potential conversion way to produce bio-oil. Emulsification is a physical upgrading technology, which blends immiscible liquids into a homogeneous emulsion through the addition of an emulsifier. Liquefaction bio-oil from food waste is characterized by its high pour point when compared to diesel fuel. In order to partially replace diesel fuel by liquefaction bio-oil, this study aimed to develop a method to simultaneously extract and emulsify the bio-oil using a commercial surfactant (Atlox 4914, CRODA, Snaith, UK). The solubility and stability of the emulsions at various operating conditions such as the bio-oil-to-emulsifier ratio (B/E ratio), storage temperature and duration, and co-surfactant (methanol) addition were analyzed. The results demonstrate that higher amounts of bio-oil (7 g) and emulsifier (7 g) at a B/E ratio = 1 in an emulsion have a higher solubility (66.48 wt %). When the B/E ratio was decreased from 1 to 0.556, the bio-oil solubility was enhanced by 45.79%, even though the storage duration was up to 7 days. Compared to the emulsion stored at room temperature (25 °C), its storage at 100 °C presented a higher solubility, especially at higher B/E ratios. Moreover, when methanol was added as a co-surfactant during emulsification at higher B/E ratios (0.714 to 1), it rendered better solubility (58.83–70.96 wt %). Overall, the emulsified oil showed greater stability after the extraction-emulsification process.
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4

Nunez, Cristian, Ramin Dabirian, Ilias Gavrielatos, Ram Mohan, and Ovadia Shoham. "Methodology for Breaking Up Nanoparticle-Stabilized Oil/Water Emulsion." SPE Journal 25, no. 03 (2020): 1057–69. http://dx.doi.org/10.2118/199892-pa.

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Summary A state-of-the-art portable dispersion characterization rig (P-DCR) is applied to study emulsions with Exxsol™ mineral oil (ExxonMobil Chemical Company, Houston, Texas, USA), commercial distilled water, and hydrophobic silica nanoparticles (NPs) as emulsifiers. The emulsion is prepared in the P-DCR batch-separator vessel, whereby the separation kinetics are observed and recorded. In this study, emulsion breakup by the integration of oil extraction/water addition and a stirring process is investigated, which is formed with 25% water cut (WC) and 0.01% w/w hydrophobic NPs (dispersed in the oil phase). The experimental data are divided into three data sets: oil extraction only, oil-extraction/pure-water addition, and oil-extraction/water with hydrophilic NP addition. For oil extraction only (Data Set 1), the WC of the fluid mixture increases, and for a sufficient volume extraction, phase inversion occurs that results in a complete separation of the oil and water. The minimum final required NP concentration for a fast separation, defined as the minimum concentration of NP required to begin the phase separation of the emulsion, is approximately 0.0045%. The acquired data for oil-extraction/pure-water-addition (Data Set 2) result in a faster breakup of the emulsion, as compared with oil extraction only. The oil-extraction/pure-water-addition process increases the system WC faster, reaching the phase-inversion point sooner. For the oil-extraction/pure-water-addition, the final lowest WC and NP concentrations are approximately 37% and 0.006% w/w, respectively, for fast separation. Thus, it can be concluded that the NP concentration and the WC are related. Repetitive oil-extraction/pure-water-addition cycles enable determination of the combined effects of the WC and NP on the separation process. A relatively stable emulsion is reached after approximately 2 minutes from the beginning of each cycle, which enables determining whether a quick separation occurs at the current cycle. Data Set 3 (oil-extraction/water with hydrophilic NP addition) results reveal that dispersing hydrophilic NPs in water does not promote emulsion breakup. On the contrary, the NPs produce a slightly more stable emulsion. The separation process, however, does not differ significantly even for high hydrophilic NP concentrations, emphasizing the dominant role of the hydrophobic particles (dispersed in the base-case emulsion).
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5

Mitbumrung, Wiphada, Numphung Rungraung, Niramol Muangpracha, Ploypailin Akanitkul, and Thunnalin Winuprasith. "Approaches for Extracting Nanofibrillated Cellulose from Oat Bran and Its Emulsion Capacity and Stability." Polymers 14, no. 2 (2022): 327. http://dx.doi.org/10.3390/polym14020327.

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The pretreatment process is an essential step for nanofibrillated cellulose production as it enhances size reduction efficiency, reduces production cost, and decreases energy consumption. In this study, nanofibrillated cellulose (NFC) was prepared using various pretreatment processes, either chemical (i.e., acid, basic, and bleach) or hydrothermal (i.e., microwave and autoclave), followed by disintegration using high pressure homogenization from oat bran fibers. The obtained NFC were used as an emulsifier to prepare 10% oil-in-water emulsions. The emulsion containing chemically pretreated NFC exhibited the smallest oil droplet diameter (d32) at 3.76 μm, while those containing NFC using other pretreatments exhibited d32 values > 5 μm. The colors of the emulsions were mainly influenced by oil droplet size rather than the color of the fiber itself. Both NFC suspensions and NFC emulsions showed a storage modulus (G′) higher than the loss modulus (G″) without crossing over, indicating gel-like behavior. For emulsion stability, microwave pretreatment effectively minimized gravitational separation, and the creaming indices of all NFC-emulsions were lower than 6% for the entire storage period. In conclusion, chemical pretreatment was an effective method for nanofiber extraction with good emulsion capacity. However, the microwave with bleaching pretreatment was an alternative method for extracting nanofibers and needs further study to improve the efficiency.
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6

Kluge, Johannes, Lisa Joss, Sebastian Viereck, and Marco Mazzotti. "Emulsion crystallization of phenanthrene by supercritical fluid extraction of emulsions." Chemical Engineering Science 77 (July 2012): 249–58. http://dx.doi.org/10.1016/j.ces.2011.12.008.

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7

Linares-Devia, Natalia, Javier Arrieta-Escobar, Yolima Baena, Alvaro Orjuela, and Coralia Osorio. "Development and Characterization of Emulsions Containing Ground Seeds of Passiflora Species as Biobased Exfoliating Agents." Cosmetics 9, no. 1 (2022): 15. http://dx.doi.org/10.3390/cosmetics9010015.

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Ground seeds from three species of the genus Passiflora, P. ligularis, P. edulis Sims fo edulis, and P. mollissima, were obtained by extraction, drying, grinding, and sieving, and their physicochemical properties (morphology, hardness, and proximal analysis) were compared to those of commercial exfoliant seeds from passion fruit. Particle sizes between 0.5 and 1 mm were obtained, and their properties were similar to the commercial product except for the extractable material content that was higher. Subsequently, prototypes of an exfoliating cosmetic product were developed by using the ground seeds as the main active ingredient. Rheology characterization of samples enables to verify that the particles have minor effects on emulsion properties and that the emulsion is stable even after thermal treatment. In particular, the pH of the emulsion decreased when using the obtained ground seeds. This is consistent with the extraction and solvation of organic acids into the emulsion, in particular, alpha-hydroxy acids, which are present in high concentrations in Passiflora species. This indicates that the prepared emulsions could have a synergic chemical and physical exfoliating activity and could be used in cosmetic products.
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8

Ghetiu, Iuliana, Ioana Gabriela Stan, Casen Panaitescu, Cosmin Jinescu, and Alina Monica Mares. "Surfactants Efficiency in Oil Reserves Exploatation." Revista de Chimie 68, no. 2 (2017): 273–78. http://dx.doi.org/10.37358/rc.17.2.5435.

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The use of surfactants in the process of water separation from crude oil emulsions formed at extraction is an effective solution in the treatment of crude oil. But perfecting this technology to a higher degree of efficiency, in order to destabilize the emulsion formed, requires the determination of the parameters involved in the design and the correlation of the obtained results. This research also aims at finding optimal solutions that increase the degree of water separation from emulsions using surface-effective solutions to destabilize the emulsion layer. This research was basedon data from two wells that extract oil from Barc�u reservoir. To achieve this objective, the composition of crude oil was analyzed, the emulsion characteristics were established and the elected demulsifiers were tested. The study highlights the efficiency of destabilization up to 97.9 mass %.
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9

Kerimova, Z. K., and K. Y. Alieva. "Production of emulsion crème from the Izabella grape seeds and the study of its pharmacocosmetological properties." Reviews on Clinical Pharmacology and Drug Therapy 10, no. 3 (2012): 50–52. http://dx.doi.org/10.17816/rcf10350-52.

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Using the method of polyfraction extraction, the oil, spiritus and water extractions from the Izabella grape seeds were received by means of hexane taking out, the emulsion crème of the water/oil type on that base was developed. The treatment effect of emulsion crème on the thermic and chemical burnings was determined in the experiment. During the primary cosmetology trial the emulsion crème was effective for removal and prevention of wrincklies.
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10

Fouad, Elsayed Ali. "Optimizing Emulsion Liquid Membrane Process for Extraction of Nickel from Wastewater Using Taguchi Method." International Journal of Research in Science 3, no. 1 (2017): 1. http://dx.doi.org/10.24178/ijrs.2017.3.1.01.

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Abstract--The main objectives of this research were focused on extracting nickel ions from waste water using emulsion liquid membrane as well as determining the optimal conditions for the extraction process. Taguchi experimental design method was applied to determine the optimum extraction conditions. The controllable factors of the emulsion liquid membrane process were carrier; surfactant; and internal phase concentration, treating ratio, stirring time, and feed phase acidity were optimized. The contribution of each controllable factor was also explored. The results indicated the greatest effect of the carrier concentration in comparison to other parameters. The five other parameters slightly affected the extraction percentage of nickel. The optimum conditions for the extraction was found to be carrier concentration (M) of 0.25, surfactant concentration (v %) of 10, internal phase concentration (M) of 0.1, external / emulsion ratio (v/v) of 5, stirring time (min.) of 1, and feed phase pH of 0.5.
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