Bibliografías temáticas / Liquid extraction purification

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Literatura académica sobre el tema "Liquid extraction purification"

Autor: Grafiati
Publicado: 11 de enero de 2025

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Artículos de revistas sobre el tema "Liquid extraction purification"

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Huseynov, H. D. "IONIC LIQUID EXTRACTION CLEANING OF PETROLEUM FRACTIONS". Chemical Problems 20, n.º 3 (2022): 197–212. http://dx.doi.org/10.32737/2221-8688-2022-3-197-212.

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The extraction purification process is currently being intensively studied and has a great future as an alternative method of purification of petroleum fractions. The point is that the development of technology and rise in the consumption of fuels and oils calls for tightening of requirements to their quality characteristics. At the same time, special attention is paid to the content of aromatic hydrocarbons, sulfur-containing and resinous compounds in their composition. The present review considers the results of studies of extractive purification of various oil fractions using both traditional and "green" solvents - ionic liquids as an extractant providing for the effectiveness of ion-liquid extraction purification. The article also describes studies on combining the process of ion-liquid extraction with an oxidative purification method. The results of studies carried out at the Institute of Petrochemical Processes of the National Academy of Sciences of Azerbaijan on ion-liquid extraction purification of petroleum distillates for various purposes, in particular, transformer oil distillate, catalytic cracking and reforming gasoline, AMG-10 hydraulic fluid, Naftalan oil, diesel fuel, as well as oil distillates fractions with different viscosity values, are shown in the article. Also, the possibility getting petroleum products when used as a selective solvent of ionic liquids (morpholformate, anilinformate, N-methylpyrrolidone acetate, etc.) differing in cationic-anionic combination is substantiated.
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Ibragimova, M. J., S. A. Seidova, S. G. Alieva, H. J. Huseynov, Kh A. Abdullaeva y F. Yu Yusifzade. "IONIC LIQUIDS AS EXTRAGENTS OF COMPOUNDS NEGATIVELY AFFECTING THE ENVIRONMENTAL PROPERTIES OF DIESEL FUEL". Azerbaijan Chemical Journal, n.º 3 (21 de agosto de 2024): 20–28. http://dx.doi.org/10.32737/0005-2531-2024-3-20-28.

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The results of scientific research in the field of liquid-liquid extraction purification of diesel distillates differing in the content of undesirable aromatic and sulfur compounds using various ionic liquids as a selective, environmentally friendly solvent are presented. Different extracting ability of ionic liquids (dipropylammonium, dibutylammonium and N-methylpyrrolidinium acetate, morpholinium formate) in relation to the extracted components of diesel distillate is shown. In particular, a high degree of purification of the hydrotreated diesel fraction was established when using N-methylpyrrolidinium acetate ionic liquid in the extraction process. The influence of the staged process of extraction purifica-tion of mixed diesel distillate based on straight-run diesel fraction (70% vol.) and secondary oil processing products - light gas oil coking and light gas oil catalytic cracking (30% vol.) on the degree of dearomatization and desulfurization of the fuel has been determined. A relatively high yield and degree of purification of diesel fuel were revealed when carrying out the process of extraction purification of the mixed diesel distillate with N-methylpyrrolidinium acetate ionic liquid in three stages. The extraction purification process was studied using IR and UV spectral analysis methods and the possibility of purifying three- and fourcyclic aromatic hydrocarbons from the mixture of straight-run diesel fraction and secondary petroleum products was established when carrying out the extraction process with N-methylpyrrolidinium acetate ionic liquid
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Blaga, Alexandra Cristina, Alexandra Tucaliuc y Lenuta Kloetzer. "Applications of Ionic Liquids in Carboxylic Acids Separation". Membranes 12, n.º 8 (9 de agosto de 2022): 771. http://dx.doi.org/10.3390/membranes12080771.

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Ionic liquids (ILs) are considered a green viable organic solvent substitute for use in the extraction and purification of biosynthetic products (derived from biomass—solid/liquid extraction, or obtained through fermentation—liquid/liquid extraction). In this review, we analyzed the ionic liquids (greener alternative for volatile organic media in chemical separation processes) as solvents for extraction (physical and reactive) and pertraction (extraction and transport through liquid membranes) in the downstream part of organic acids production, focusing on current advances and future trends of ILs in the fields of promoting environmentally friendly products separation.
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Evstaf’ev, Sergei N. y Cuong Q. Hoang. "PURIFICATION OF 1-BUTYL-3-METHYLIMIDAZOLIUM CHLORIDE AFTER DISSOLUTION OF WHEAT STRAW". IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 61, n.º 3 (27 de febrero de 2018): 83. http://dx.doi.org/10.6060/tcct.20186103.5615.

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The existing technologies for the extraction of polysaccharides and lignin from lignocellulosic materials from an ecological and economic point of view are imperfect. The solution of this actual problem at present day is possible by heat treatment of lignocellulosic materials at the atmospheric pressure and relatively low temperature in the environment of ionic liquids. The use of ionic liquids for the fractionation of lignocellulosic raw materials isn't found industrial application because of their relatively high cost and sensitivity to contamination, despite the unique set of physico-chemical properties for dissolving cellulose. The solution of the problem is possible by reusing ionic liquid in the technological process without losing their effectiveness, which requires purification from impurities. The purpose of thе work was the comparative research of the efficiency of purification of 1-butyl-3-methylimidazolium chloride by adsorption on activated carbon, liquid extraction by organic solvents (benzene, dioxane, tetrahydrofuran) and supercritical CO2 extraction. It has been established that the methods of liquid extraction, supercritical CO2 extraction and adsorption on activated carbon can be used to purify 1-butyl-3-methylimidazolium chloride from extractives of wheat straw. For the purpose of comparison of efficiency of purification with above-mentioned methods the GC-MS, IR- and 1H NMR spectroscopy were used. It was revealed that extraction of impurities by organic solvents, such as benzene, dioxane and tetrahydrofuran, allows to reduce significantly their content in ionic liquid while supercritical CO2-extraction and adsorption on activated carbon almost completely remove impurities. Considering the substantial losses of the ionic liquid when using adsorption to purify 1-butyl-3-methylimidazolium chloride from the extractives of wheat straw, a supercritical CO2 extraction method can be recommended for use.Forcitation:Evstaf’ev S.N., Hoang C.Q. Purification of 1-butyl-3-methylimidazolium chloride after dissolution of wheat straw. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 3. P. 83-87
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Chaturvedi, Tanmay, Laura Sini Sofia Hulkko, Malthe Fredsgaard y Mette Hedegaard Thomsen. "Extraction, Isolation, and Purification of Value-Added Chemicals from Lignocellulosic Biomass". Processes 10, n.º 9 (2 de septiembre de 2022): 1752. http://dx.doi.org/10.3390/pr10091752.

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This review covers the operating conditions for extracting top value-added chemicals, such as levulinic acid, lactic acid, succinic acid, vanillic acid, 3-hydroxypropionic acid, xylitol, 2,5-furandicarboxylic acid, 5-hydroxymethyl furfural, chitosan, 2,3-butanediol, and xylo-oligosaccharides, from common lignocellulosic biomass. Operating principles of novel extraction methods, beyond pretreatments, such as Soxhlet extraction, ultrasound-assisted extraction, and enzymatic extraction, are also presented and reviewed. Post extraction, high-value biochemicals need to be isolated, which is achieved through a combination of one or more isolation and purification steps. The operating principles, as well as a review of isolation methods, such as membrane filtration and liquid–liquid extraction and purification using preparative chromatography, are also discussed.
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Seidova, Sabina A. "EXTRACTION METHODS OF CLEANING OF MOTOR FUEL". IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 62, n.º 10 (29 de octubre de 2019): 30–39. http://dx.doi.org/10.6060/ivkkt.20196210.5941.

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In paper the results of the carried out analysis of literary data on preparation of motor fuels of high quality by extraction method of purification of the corresponding oil distillates with use of compounds of various class as a selective solvent have been presented. In particular, the results of comparative analysis of existing methods of the extraction purification of distillates of motor fuels from unnecessary components – aromatic hydrocarbons, sulphur-containing compounds and resinous substances with use of organic solvents and ion-liquid compositions as a selective solvent have been presented. The advantage of the extraction method of purification of motor fuels determined by possibility of the process at low temperature and pressure, by absence of necessity of application of the expensive catalysts, by possibility of regeneration and reuse of solvent, etc. in comparison with widely used hydrogenation method has been shown. The lacks of the organic solvents used as an extractant have been also listed and due to the ecological problems the use of non-volatile, thermally stable ion-liquid compositions as a selective solvent in the processes of purification of the distillates, intended for preparation a high quality target products, such as diesel fuel, gasoline, base oils for various purposes has been substantiated. In paper the results of systematic investigations carried out at the Institute of Petrochemical Processes of Azerbaijan National Academy of Sciences with the participation of the authors themselves, concerning the selective purification of the oil fractions of various composition and viscosity with use of ionic liquids synthesized on the basis of formic and acetic acids composition have been also presented. By carried out analysis it has been shown the perspectivity of application of the ion-liquid compositions as an extractant in the processes of the selective purification of the oil distillates.
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Niu, Rui Xia, Bo Lin Li y Biao Long. "Purification and Fractionation of Natural Petroleum Sulfonates by Liquid-Liquid & Soxhlet Extraction". Advanced Materials Research 455-456 (enero de 2012): 496–502. http://dx.doi.org/10.4028/www.scientific.net/amr.455-456.496.

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Natural petroleum sulfonates (PS) was separated, purified and divided into several fractions by a new method liquid-liquid & soxhlet extraction. The effects of heating time, volume ratio of extractants (isopropanol aqueous solution-50/50 (by volume) : n-pentane), gradient solvent types, extracting time & times on the separation efficiency are discussed, respectively. And the extracted mineral oil was anlalyzed by IR spectra, the average equivalent weight of each extracted PS fraction was measured by ESI-MS. The experimental results show that the volatiles in natural plant-manufactured PS can evaporate thoroughly in 3.5h at 130°C, and when the volume ratio of stated extractants is 3:1, after several times extraction & anti-extraction, the extracted mineral oil is PS-free, and the purified PS is successfully separated from inorganic salt, meanwhile the purified PS was divided into four fractions, whose average equivalent weight are (toluene extract) 595.03, (dichloromethane extract) 486.00, (isopropanol extract) 474.85 and (alcohol extract) 384.5g/mol, respectively. The proposed method is superior to the traditional liquid-liquid extraction for simplified steps and bifunction with PS purifying & fraction dividing, can separate efficiently industrial PS and other similar mixtures.
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Curran, Dennis P, Reena Bajpai y Elizabeth Sanger. "Purification of Fluorous Mitsunobu Reactions by Liquid-Liquid Extraction". Advanced Synthesis & Catalysis 348, n.º 12-13 (agosto de 2006): 1621–24. http://dx.doi.org/10.1002/adsc.200606187.

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Bendada, A., A. H. Meniai y L. M. Bencheikh. "Modeling of Phosphoric Acid Purification by Liquid-Liquid Extraction". Chemical Engineering & Technology 24, n.º 12 (diciembre de 2001): 1273–80. http://dx.doi.org/10.1002/1521-4125(200112)24:12<1273::aid-ceat1273>3.0.co;2-j.

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Mansel, Alexander y Karsten Franke. "Production of no-carrier-added 89Zr at an 18 MeV cyclotron, its purification and use in investigations in solvent extraction". Journal of Radioanalytical and Nuclear Chemistry 328, n.º 1 (11 de marzo de 2021): 419–23. http://dx.doi.org/10.1007/s10967-021-07634-x.

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AbstractThe chemical separation of zirconium from lanthanides by liquid–liquid extraction is challenging but critical for medical and technological applications. Using the example of 89Zr, we optimize the liquid–liquid-extraction process by means of the radiotracer technique. We produced 89Zr by proton irradiation of a metallic yttrium target at a cyclotron. The purification of the radionuclide was performed by a UTEVA resin. 89Zr was separated in no-carrier-added form in a sulfuric acid solution. 89Zr was successfully used in solvent extraction tests with calixarenes for the separation of zirconium from lanthanides. This reaction is suitable for the efficient extraction and purification of lanthanides.
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Tesis sobre el tema "Liquid extraction purification"

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Pinheiro, Regiane Silva. "Study of liquid-liquid extraction for methyl biodiesel purification process". Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=14103.

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CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior
In the process of purification of biodiesel is of extreme importance washing methyl or ethyl ester rich- phase, since in conventional processes there is a great amount of water. During the washing is extracted primarily excess alcohol. Composition data for the washing process of biodiesel is still scarce in the literature and the study of liquid-liquid equilibrium provides the means to develop equipment and to optimize the extraction processes. Thus the main goal of this work is to determine equilibrium data for three different ternary systems: water - methanol - soybean biodiesel; corn biodiesel â methanol â water; methanol - coconut biodiesel - water at 20 Â C and 40 Â C. The experiments were carried out in equilibrium cells where the temperature was kept constant by thermostat control. The experimental determination was made by the method of densimetry. The consistency of data obtained for the tie lines was verified by correlations. It was verified by the ternary graphs, little influence of temperature on the systems studied. The equilibrium data were correlated liquid-liquid models for the activity coefficient NRTL, UNIQUAC and UNIFAC and proved quite satisfactory.
No processo de purificaÃÃo do biodiesel, a lavagem da fase rica em metil ou etil Ãster à de extrema importÃncia, visto que nos processos convencionais hà um grande gasto de Ãgua. Durante a lavagem à extraÃdo principalmente Ãlcool em excesso. Dados de composiÃÃes para a lavagem de biodiesel ainda sÃo escassos na literatura e o estudo do equilÃbrio lÃquido-lÃquido pode fornecer meios para o desenvolvimento de equipamentos e otimizaÃÃo dos processos de extraÃÃo. Dessa forma, o principal objetivo dessa dissertaÃÃo foi determinar dados de equilÃbrio lÃquido- lÃquido para os sistemas ternÃrios contendo biodiesel de soja + metanol + Ãgua, biodiesel de milho + metanol e Ãgua e biodiesel de coco + metanol + Ãgua, a 20 ÂC e 40 ÂC. Os experimentos foram feitos em cÃlulas de equilÃbrio mantendo a temperatura constante. A determinaÃÃo experimental das misturas ternÃrias foi feita pelos mÃtodos de titulaÃÃo e densimetria. A consistÃncia dos dados das linhas de amarraÃÃo foi verificada pelas correlaÃÃes de Othmer-Tobias e Hand. Verificou-se por meio de grÃficos ternÃrios, pouca influÃncia da temperatura sobre os sistemas estudados. Os dados de equilÃbrio lÃquido-lÃquido foram correlacionados pelos modelos para coeficiente de atividade NRTL, UNIQUAC e UNIFAC e mostraram-se bastante satisfatÃrios.
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2

Hewitson, Peter. "Intermittent counter-current extraction : a new continuous dynamic liquid-liquid extraction methodology". Thesis, Brunel University, 2014. http://bura.brunel.ac.uk/handle/2438/13900.

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For the pharmaceutical industry, the manufacture of high value pharmaceuticals from natural products, chemical synthetic routes or fermentation processes all require intensive downstream processing steps to produce a pure final product. A small footprint liquid-liquid processing method would help to reduce the capital cost and process development time of this downstream processing. In this thesis, it is hypothesised that continuous liquid-liquid extraction can be achieved using a standard hydrodynamic counter-current chromatography (CCC) instrument by switching the flow of the liquid phases between normal phase and reversed phase intermittently, so separating a feed stream into two eluant flows. A model of the process was derived and tested on three scales of instrument, from the semipreparative to the pilot scale. The method developed, Intermittent Counter-current Extraction (ICcE) was compared to dual-flow counter-current chromatography (DFCCC), the classical method of applying continuous extraction using a counter-current chromatograph. ICcE was found to be advantaged due to the more stable phase volume ratio achievable in the columns and the ability to operate the procedure on standard commercial twin-column CCC instruments which operate at high g-field. The robustness of the ICcE method was successfully demonstrated across a range of phase system polarities and at high throughput (1kg/day on a preparative instrument) with model mixtures of pharmaceutical compounds. The effectiveness of this new processing method was confirmed on three industrially relevant case studies. Firstly a polar extract from natural senna pods to extract important sennosides, secondly an intermediate polarity highly complex active pharmaceutical ingredient waste stream to recover the main active component and thirdly a non-polar natural product extract to recover macrocarpal compounds. In summary, the ICcE method now offers another tool in the range of liquid-liquid separation methods available to the pharmaceutical and other high value industries.
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Campos, Assunção Mariana. "Etude physicochimique et formulation d'un nouveau solvant d'extraction pour la purification de l'acide phosphorique". Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066045/document.

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Cette thèse avait pour objectif de développer de nouveaux systèmes d’extraction liquide-liquide compatibles avec le procédé Prayon pour la purification de l’acide phosphorique produit par voie humide. Une étude bibliographique complète des solvants d’extraction étudiés dans la littérature pour l’extraction liquide-liquide de l’acide phosphorique nous a permis d’identifier des candidats potentiellement intéressants. Une étude approfondie des propriétés d’extraction de ces systèmes et de leur sélectivité vis-à-vis des espèces métalliques nous a finalement permis de nous focaliser par la suite sur trois solvants d’extraction : le dibutyl éther (DBE), le diisobutyl carbinol (DiBC) dilué dans le diisopropyl éther (DiPE) et la Fentamine T0810 (ATS) dilué dans le DiPE. La formulation de ces mélanges a ensuite été optimisée en veillant à étudier le comportement de ces systèmes à chaque étape du procédé d’extraction liquide-liquide, c’est à dire l’extraction, la désextraction et le lavage. Cette étude a également permis de fixer les conditions opératoires optimales, notamment le rapport des volumes des phases. Au cours de cette étude, des phénomènes complexes de transitions de phases réversibles de la phase organique de monophasique vers biphasique (formation de troisième phase) et biphasique vers monophasique (retour à une phase organique unique) ont été mis en évidences expérimentalement. Pour finir, un modèle physicochimique d’extraction fondé sur des bilans de masse a été développé. Ce modèle s’avère très utile pour décrire l’extraction de l’acide phosphorique et de l’eau et la variation des volumes des phases au cours de l’extraction
This PhD thesis was focused on the development of new extraction systems to purify phosphoric acid from wet phosphoric acid (WPA). The new system should be respectful of the current Prayon’s process flowsheet designed for the use of the mixture tri-n-butyl phosphate(TBP) and diisopropyl ether (DiPE) as extraction solvent. Firstly, extractants exhibiting different structures and functional groups were screened in order to assess their efficiency and selectivity towards phosphoric acid. Three new promising extraction systems were identified: diisobutyl ether (DBE), diisocarbinol (DiBC) in DiPE, and Fentamine T0810 (ATS) in DiPE. Secondly, our effort was directed to the comprehension of the physico-chemical phenomena involved in the extraction of phosphoric acid by the mixture TBP/DiPE at first, and enriched to describe the other systems studied later. Finally, a simulation model describing the solvent extraction of phosphoric acid by the solvent currently employed by Prayon is presented. This model accounts for the significant volume variation during the extraction of phosphoric acid and allows performing optimizations of extraction parameters even at very high phosphoric acid concentrations (6-14M)
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Alenazi, Mohrah. "Extraction and Purification of Biologically Active Metabolites from Rhodococcus sp. MTM3W5.2". Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etd/3507.

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Rhodococcushas been recognized as a potential antibiotic producer. Recently, a strain of Rhodococcussp. MTM3W5.2 was isolated from a soil sample collected in Morristown, Tennessee and was found to produce an inhibitory compound which is active against other related species. The purpose of this research is to extract, purify and analyze the active metabolite. The compound was extracted from RM broth cultures and purified by preliminary fractionation of crude extract through a Sephadex LH-20 column. Further purification was completed using semi-preparative reversed phase column chromatography. Final purification was obtained using multiple rounds of an analytical C18 HPLC column. Based on the results achieved in the UV-Vis spectroscopy and high-resolution mass spectroscopy, the two desired compounds at a retention time of at 57 and 72 min could be polyketides with the molecular formulas C52H78O13 and C19H32O1N1/C13H34O1N1, respectively.
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5

Gilbert, Christopher Donald. "Non-Newtonian conversion of emulsion liquid membranes in the extraction of lead and zinc from simulated wastewater". Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/10911.

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Lane, Marshalle. "Dispersive liquid-liquid micro-extraction coupled with gas chromatography for the detection of trihalomethanes in different water sources in the Western Cape, South Africa". Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2852.

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Thesis (MTech (Chemistry))--Cape Peninsula University of Technology, 2018.
Trihalomethanes (THMs) are a group of four compounds that are formed, along with other disinfected by-products. This happens when chloride or other disinfectants are used to control microbial contamination in drinking water, which then reacts with natural organic or inorganic substances in water. Trihalomethanes are better known by their common names such as chloroform, bromodichloromethane, chlorodibromomethane and bromoform. These four compounds are known to be classified as cancer group B carcinogens (shown to cause cancer in laboratory animals). Trihalomethane levels tend to increase with pH, temperature, time and the level of “precursors" present. Precursors are known to be organic substances which react with chloride to form THMs. One significant way of reducing the amount of THMs in water is to eliminate or reduce chlorination before filtrations and reduce precursors. There are guideline limits for THMs in the SANS 241:2015 document, but they are not continuously monitored and their levels in natural water are not known. The aim of this study is to develop a rapid, fast and reliable liquid-liquid microextraction technique, to determine the presence of THMs in natural water sources. This study particularly focuses on different water sources e.g. river, underground, borehole and chlorinated water. Chlorinated water is the water that has been presumably treated for bacteria and fungus growth. The results that were obtained for chlorinated water are as follow, 10.120 μg/L − 11.654 μg/L for chloroform, 2.214 μg/L - 2.666 μg/L for bromodichloromethane, 0.819 μg/L − 0.895 μg/L chlorodibromomethane and 0.103 μg/L - 0.135 μg/L for bromoform from validation data. All these THMs concentrations have been found to be below the SANS 241:2015 limits. Natural water shows a very high affinity for chloroform. This is what is expected under normal conditions as chloroform is the most abundant THM of all THMs present in natural water. The liquid-liquid microextraction technique that was optimized and used for the determination of THMs in this study is a rapid, simple and inexpensive technique that provides low limits of detection (LOD) e.g. 0.1999 μg/L chlorodibromomethane and 0.2056 μg/L bromoform and wide dynamic range (LOQ) of 0.6664 μg/L chlorodibromomethane and 0.6854 μg/L bromoform for the determination of THMs.
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Manikindi, Pushpavathi Reddyvari. "Extraction, Purification and Characterization of an Antibiotic-like Compound Produced by Rhodococcus sp. MTM3W5.2". Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etd/3116.

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The bacterium Rhodococcus is a potential source for novel antimicrobial metabolites. Recently, the Rhodococcus strain MTM3W5.2 was isolated from a soil sample collected from Morristown, East Tennessee and was found to produce an inhibitor molecule that is active against similar Rhodococcus species. The aim of this research is to extract, purify, and characterize the active compound. The compound was obtained from both agar and broth cultures of strain MTM3W5.2 and purified by primary fractionation of crude extract on a Sephadex LH-20 column, followed by semi-preparative reversed phase column chromatography. Final purification was achieved using multiple rounds of an analytical C18 HPLC column. Based on the results obtained from UV-Vis, FT-IR, and HR-MS, the molecule is a polyketide with a molecular formula of C52H78O13 and an exact mass of 911.5490 amu. The partial structure of this compound has been determined using 1D and 2D NMR spectroscopy.
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Pereira, Matheus Mendonça. "Ionic-liquid-based aqueous biphasic systems as concentration and purification platforms of cancer biomarkers". Doctoral thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/21532.

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Doutoramento em Engenharia Química
Cancer is worldwide a major cause of death, with ca. 14 million new diagnosed cases each year. Therefore, the search for more efficient early-stage diagnosis methods is crucial aiming at increasing the treatment rate and survival of patients, as well as to decrease the expenses associated to advanced treatment. Prostate specific antigen (PSA) and lactate dehydrogenase (LDH) are proteins commonly found in human fluids (urine and serum), and have been considered as cancer biomarkers and in the monitoring of cancer treatment. However, due to their low concentration and the complexity of biological matrices with a large amount of other metabolites present (proteins, DNA, RNA), the pretreatment of samples for their concentration and purification is usually applied. In this work, alternative pretreatment techniques based on aqueous biphasic systems (ABS) composed of ionic liquids (ILs) have been studied to extract, concentrate and purify proteins that can be used as cancer biomarkers, such as PSA and LDH. To this end, several preliminary works were performed to identify the most promising phase-forming components and conditions to create ABS that could be used for the extraction of proteins. These works comprise studies on the extraction of amino acids and model proteins in ABS, followed by investigations on their use with more complex matrices. Finally, ABS were investigated for the extraction and concentration of tumor biomarkers, namely PSA and LDH. In summary, the versatility of ILs allows the tailoring of the ABS extraction and concentration capacity, selectivity, and/or induced precipitation of cancer biomarkers from human fluids. The systems here developed are a viable and efficient alternative for the pretreatment of biological samples (serum and urine), thus contributing to the development of early-stage methods of cancer diagnosis.
O cancro é mundialmente uma das principais causas de morte, com cerca de 14 milhões de novos casos diagnosticados por ano. Neste sentido, o desenvolvimento de métodos de diagnóstico mais eficientes em estágio inicial da doença é crucial para auxiliar o tratamento e aumentar a taxa de sobrevida dos pacientes, além de diminuir as despesas associadas aos tratamentos avançados. O antígeno específico da próstata (PSA) e a lactato desidrogenase (LDH) são proteínas comumente encontradas nos fluidos humanos (urina e soro) e têm sido alvo de atenção como biomarcadores do cancro e na monitorização do seu tratamento. No entanto, devido à sua baixa concentração e à complexidade das matrizes biológicas com uma grande quantidade de outros metabólitos presentes (proteínas, DNA, RNA), é geralmente aplicado um ou mais passos de pré-tratamento de amostras. Neste trabalho, foram estudadas técnicas alternativas de pré-tratamento baseadas em sistemas aquosos bifásicos (SAB) constituídos por líquidos iónicos (LIs) para extrair, concentrar e purificar proteínas que podem ser usadas como biomarcadores de cancro, como a PSA e LDH. Para este fim, foram realizados vários trabalhos preliminares para identificar os componentes e condições de formação mais promissores para criar SAB que possam ser utilizados para a extração de proteínas. Estes trabalhos contemplam a utilização de SAB para a extração de aminoácidos e proteínas modelo, assim como a utilização de SAB em matrizes mais complexas. Finalmente, os SAB foram aplicados para a extração e concentração de biomarcadores tumorais, nomeadamente PSA e LDH. Em suma, com este trabalho verificou-se que a versatilidade dos LIs permite adaptar a capacidade de extração e concentração, seletividade, e/ou precipitação induzida de biomarcadores de cancro a partir de fluidos humanos. Os sistemas aqui desenvolvidos são uma alternativa viável e eficiente para o pré-tratamento de amostras biológicas (soro e urina), contribuindo assim para o desenvolvimento de métodos de diagnóstico de cancro precoces.
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Duran, Renan Ravetti. "Procédés d’extraction et de purification de molécules à haute valeur ajoutée issues de la biomasse bois". Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0325.

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Les sous-produits qui proviennent de l’industrie du bois, particulièrement les nœuds, contiennent différents types de molécules qui peuvent être valorisées comme source de composants bioactifs pouvant répondre à des besoins thérapeutiques. C’est sur cette idée que le projet "Le Bois Santé" a été conçu. Grâce à la collaboration de plusieurs partenaires, le présent travail vise dans un premier temps à développer des procédés d’extraction "verts" (solide-liquide et supercritique) pour obtenir un extrait riche en lignanes à partir d’un mélange de nœuds d’épicéa commun et de sapin pectiné. Les effets des conditions opératoires sur le rendement d’extraction de chaque composé cible et sur l’activité anti-oxydante des extraits ont été déterminés. Afin d’étudier le procédé complet, le projet vise à étudier l’impact des procédés de concentration et de séchage de l’extrait à partir de l’évaporation sous vide et de la lyophilisation. De plus, la séparation et la purification des composés ont été développées et optimisées par simulation grâce à la technique de chromatographie frontale
By-products from wood industry, particularly knots, contain different types of molecules that can be valued as a source of bioactive components meeting therapeutic needs. It is on this idea that the project "Le Bois Santé" was designed. Through the collaboration of several partnerships, the present work aims initially to develop a "green" extraction processes (solid-liquid and supercritical) to obtain an extract rich in lignans from a mixture of norway spruce and silver fir knots. The effects of operating conditions on the extraction yield of each target compound and the antioxidant activity of the extracts were determined. To understand the entire process, the project aims to investigate the impact of concentration and drying processes using vacuum evaporation and lyophilisation. Moreover, the separation and purification of the compounds have been developed and optimized using frontal chromatography technique
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Gomes, Joana Margarida Mota. "Purification of IgY using aqueous biphasic systems composed of good’s buffers ionic liquids". Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/15391.

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Mestrado em Bioquímica - Métodos Biomoleculares
The increased inefficiency of antibiotics observed in the past few years, derived from the growing number of drug-resistant organisms and the appearance of individuals with impaired immune system, led to a significant research on antibodies for use in passive immunotherapy. Antibodies obtained from the egg yolk of immunized hens, immunoglobulin Y (IgY), are a promising alternative to mammalian antibodies. They can be obtained in higher titres and by less invasive techniques, thus opening the door for a new kind of more economic biopharmaceuticals. However, the available techniques for the IgY extraction and purification are time-consuming, labor intensive, low yielding, provide low-purification levels, are of high cost and cannot easily be scaled-up for industrial applications. In this work, ABS composed of C6H5K3O7 and ILs synthetized by the combination of anions with buffer capacity (Good’s buffers), with the tetrabutylphosphonium ([P4444]+) and tetrabutylammonium ([N4444]+) cations, were investigated. The use of different ILs allowed the study of the cation and anion nature on the phase diagrams behaviour and thus on their ability to form ABS. Further, the ability of these systems as an alternative purification platform for IgY, by a selective extraction, was studied. The complete extraction and purification of IgY was not achieved in a single with the investigated ABS. However, the study of the proteins profile of the coexisting phases allowed to conclude that all proteins migrate for the top phase during the partitioning process, and that a complex between the ILs and the different proteins present in the water-soluble fraction of proteins from egg yolk was formed. Still, the results obtained reveal that the system composed of 20.1 wt % [N4444][CHES] + 16.9 wt % C6H5K3O7 is the most promising ABS for the IgY extraction.
Recentemente, a utilização de anticorpos para imunoterapia passiva tornou-se uma área de investigação atrativa. Tal facto deve-se à diminuição da eficiência dos antibióticos pelo aumento do número de organismos resistentes. Os anticorpos obtidos a partir da gema do ovo de galinhas imunizadas, imunoglobulinas Y (IgY), são uma alternativa viável e promissora aos anticorpos de mamíferos. Estes apresentam inúmeras vantagens, dado que podem ser obtidos em maior quantidade e serem recolhidos por técnicas menos invasivas. Apesar das vantagens apresentadas, as técnicas disponíveis para a extração e purificação de IgY são demoradas, trabalhosas, apresentam baixo rendimento, levam a baixos fatores de pureza, apresentam custos elevados e não são facilmente aplicáveis a nível industrial. Assim, o principal objetivo deste trabalho consistiu no desenvolvimento de uma plataforma de purificação alternativa para a extração e purificação de IgY, utilizando sistemas aquosos bifásicos (SAB) constituídos por líquidos iónicos com capacidade tampão. Neste trabalho foram estudados SAB constituídos por C6H5K3O7 e líquidos iónicos, sendo os últimos sintetizados pela combinação de aniões com capacidade tampão (Good’s buffers), com os catiões tetrabutilamónio ([N4444]+) e tetrabutilfosfónio ([P4444]+). Os líquidos iónicos utilizados permitiram o estudo da influência do anião e do catião nos diagramas de fase, ou seja sob a capacidade dos diferentes líquidos iónicos para formar SAB. De seguida, foi testada a capacidade destes sistemas como uma plataforma alternativa para a extração seletiva, e posterior purificação, de IgY. A purificação de IgY não foi conseguida num único passo de extração com os sistemas estudados. No entanto, o estudo do perfil proteico de ambas as fases dos sistemas permitiu concluir que, durante a partição, todas as proteínas migraram para a fase superior e que houve formação de um complexo entre o IL e algumas das proteínas constituintes da fração aquosa proteica da gema do ovo. Os resultados obtidos revelaram que, entre os vários SAB estudados, o mais promissor para a extração de IgY, é aquele constituído por 20.1 (m/m) % [N4444][CHES] + 16.9 (m/m) % C6H5K3O7.
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Libros sobre el tema "Liquid extraction purification"

1

Schoepfer, Matthieu. Evaluation of liquid-liquid extraction as a wastewater purification process. Manchester: UMIST, 1996.

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Hiler, G. V. Liquid-liquid extraction of trace level pesticides from process streams. Research Triangle Park, NC: U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory, 1985.

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Hiler, G. V. Liquid-liquid extraction of trace level pesticides from process streams. Research Triangle Park, NC: U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory, 1985.

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Hiler, G. V. Liquid-liquid extraction of trace level pesticides from process streams. Research Triangle Park, NC: U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory, 1985.

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Hiler, G. V. Liquid-liquid extraction of trace level pesticides from process streams. Research Triangle Park, NC: U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory, 1985.

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Hiler, G. V. Liquid-liquid extraction of trace level pesticides from process streams. Research Triangle Park, NC: U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory, 1985.

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Farrell, Egerton S. Development of quantitative procedures for thermospray liquid-liquid extraction of organic compounds and evaluation of reagents for the determination of bromate ion in water. 1996.

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Capítulos de libros sobre el tema "Liquid extraction purification"

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Zhang, Jianguo y Bo Hu. "Liquid-Liquid Extraction (LLE)". En Separation and Purification Technologies in Biorefineries, 61–78. Chichester, UK: John Wiley & Sons, Ltd, 2013. http://dx.doi.org/10.1002/9781118493441.ch3.

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Kelley, Brian D. y T. Alan Hatton. "Protein Purification by Liquid-Liquid Extraction". En Biotechnology, 593–616. Weinheim, Germany: Wiley-VCH Verlag GmbH, 2008. http://dx.doi.org/10.1002/9783527620845.ch22.

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Vahan Kilikian, Beatriz, Telma Teixeira Franco, Jane S. R. Coimbra, Antonio J. A. Meirelles, Adalberto Pessoa y Adamu Muhammad Alhaji. "Liquid–Liquid Extraction in Aqueous Two-Phase Systems". En Purification of Biotechnological Products, 155–80. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781032726823-7.

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Abidin, Zurina Zainal, Dayang Radiah Awang Biak, Hamdan Mohamed y Mohd Yusof Harun. "Solid-Liquid Extraction in Biorefinery". En Separation and Purification Technologies in Biorefineries, 351–74. Chichester, UK: John Wiley & Sons, Ltd, 2013. http://dx.doi.org/10.1002/9781118493441.ch13.

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Carneiro-Da-Cunha, M. G., E. P. Melo, M. J. Sebastião, M. R. Aires-Barros y J. M. S. Cabral. "Separation and Purification of Lipases by Liquid-Liquid Extraction Processes". En Engineering of/with Lipases, 551–76. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1671-5_35.

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Samar, Mohammed, Dominique Pareau, Gérard Durand y André Chesné. "Purification of waste waters containing heavy metals; by surfactant liquid membrane extraction". En Hydrometallurgy ’94, 635–54. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1214-7_42.

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Marrucho, Isabel M. y Mara G. Freire. "Aqueous Biphasic Systems Based on Ionic Liquids for Extraction, Concentration and Purification Approaches". En Green Chemistry and Sustainable Technology, 91–119. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-48520-0_5.

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Kubek, Dennis J. "Liquid-Liquid Extraction". En Protein Purification Process Engineering, 87–114. Routledge, 2019. http://dx.doi.org/10.1201/9780203741733-5.

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Harrison, Roger G., Paul W. Todd, Scott R. Rudge y Demetri P. Petrides. "Extraction". En Bioseparations Science and Engineering. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780195391817.003.0009.

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Extraction is a process in which two phases come into contact with the objective of transferring a solute or particle from one phase to the other. For the separation and purification of biological products, the phases are most commonly immiscible liquids, and the solute is in soluble form. In certain instances, however, one phase is a liquid and the other phase is a solid; the extraction of caffeine from coffee beans is one example. Although most extractions in biotechnology involve the transfer of soluble bioproducts, organelles and cells have at times been transferred between phases. An organic solvent is often used as the extracting liquid when the solute to be extracted is stable in the organic solvent, typical examples being low molecular weight antibiotics. It is usually not feasible to extract proteins with organic solvents, since proteins are often denatured or degraded as a result of contact with the organic solvent. Proteins can often be successfully extracted by means of two immiscible liquid phases that consist of solutions of two water-soluble but incompatible polymers, or one polymer plus a high concentration of certain salts. Extraction usually comes early in the purification process for a bioproduct and typically would precede a high-resolution step such as chromatography. Extraction is often advantageous because it can bring about a significant reduction in volume and/or can separate the desired product from cells or cell debris. It is desirable to reduce the volume as soon as possible in the process, since large volumes typically lead to large costs. The extractions of interest in the purification of biotechnological and pharmaceutical products are mainly liquid-to-liquid, and this is the emphasis in this chapter. The basic definitions and principles of extraction are developed first, followed by an explanation of scale-up and design procedures for the extractors most commonly used for bioproducts. After completing this chapter, the reader should be able to do the following: • Define and use key constants such as the partition coefficient, solvent-to-feed ratio, and extraction factor. • Explain the factors that affect the partitioning of biomolecules.
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Cox, Michael. "Liquid-Liquid Extraction in Hydrometallurgy". En Science and Practice of Liquid-Liquid Extraction, 1–101. Oxford University PressOxford, 1996. http://dx.doi.org/10.1093/oso/9780198562375.003.0001.

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Abstract Hydrometallurgy involves a series of interlinked unit processes for the recovery and purification of elements using aqueous solutions. One of the essential features of present flow sheets is the inclusion of a solution treatment step to purify and concentrate the desired element before recovery. Several alternative techniques are available but liquid-liquid extraction has the greatest versatility for the separation of elements and also the range of solution concentrations which can be treated. This process is therefore now seen as the preferred technique for the treatment of all except the most dilute leach liquors, such as in gold and some uranium operations where resin ion exchange and carbon adsorption processes offer distinct advantages (Streat and Naden 1987). Although a detailed discussion of hydrometallurgy is outside the remit of this chapter, it is appropriate to consider the demands made by such a flow sheet (Fig. I. I) as these will influence the choice and operation of the liquid-liquid extraction system.
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Actas de conferencias sobre el tema "Liquid extraction purification"

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He, Fei y Qiang Wan. "Study on Purification of U Scraps in Continuous Countercurrent Extractor". En 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-66336.

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In this paper, the feasibility of continuous countercurrent extractor (CCE) applied in extraction of U scraps rather than mixer-settler was studied. Effects of rotation Reynolds number, residence time on extraction and reverse extraction efficiency were investigated respectively. During the process, impurity content in raw material had a slight effect on extraction. Under the optimum conditions of O/A phase ratio of 1.2 and rotation Reynolds number of 13824, extraction degree of scrap pellet solution and alkalescence dreg lixivium were good with the residence time of 19 min and 26 min respectively. Under the best reverse extraction conditions of A/O phase ratio of 1.2, rotation Reynolds number of 23128 and residence time of 19 min, two kinds of raw material liquid mentioned as above could get better reverse extraction efficiency, while uranium concentration of raffinate phase and impurity content of reverse extract phase satisfied the technological requirement. This study verified the feasibility of CCE developed for purification of U scraps, identified the operation parameter, and provided an experimental basis for industrial expansion in the future.
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Jingru, Shen y Xu Yong. "Separation and Purification of Bovine Serum Albumin by Non-Organic Solvent Liquid-Solid Extraction System". En 2007 1st International Conference on Bioinformatics and Biomedical Engineering. IEEE, 2007. http://dx.doi.org/10.1109/icbbe.2007.22.

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Morales, Mercedes C. y Jeffrey D. Zahn. "Development of a Diffusion Limited Microfluidic Module for DNA Purification via Phenol Extraction". En ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68086.

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Purification of Deoxyribonucleic acid (DNA) by organic-aqueous liquid extraction, also called phenol extraction, is a standard technique commonly utilized in biology laboratories. In order to minimize interaction energies, membrane components and proteins naturally partition to the organic (phenol) phase while the DNA stays in the aqueous phase, where it can be easily removed. In recent years, microfluidics has become a driving force toward more efficient and autonomous platforms for fluid based diagnostics, chemical reaction chambers, separation and preparation of biological materials. In this work, fabrication, and performance of a long microfluidic device for DNA extraction are presented. The devices were fabricated using soft lithography to transfer lithographically defined features into a PDMS structure via replica molding. Stratified-flow experiments using a rhodamine dye conjugated bovine serum albumin protein (BSA) in an aqueous phase were conducted to demonstrate the ability to remove proteins from the aqueous phase into the phenol phase. Additionally, the study of BSA partitioning and DNA isolation in a two-phase system under stratified flow condition were presented, separately and conjunctly. Finally, protein partitioning and DNA recovery obtained with this device could be compared with other types of mixing and extraction such as mixing by droplet formation and electrohydrodynamic (EHD) instability.
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Abdurrosyid, Imam, Fajar Muhammad Ramadhan, Muhammad Afton Muhandis, Intan Nurhimawati, Muhammad Ilham Bayquni, Anas Fahmi Imron, Nuradam Effendy, Nadia Tina Aisyah y Zeni Ulma. "The effect of HNO3 molarity and TBP concentration to the purification of rare earth metals by liquid-liquid extraction method using TBP:Kerosene". En INTERNATIONAL CONFERENCE ON NUCLEAR SCIENCE, TECHNOLOGY, AND APPLICATIONS – ICONSTA 2022. AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0194127.

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Mao, Xiaole, Sung Yang y Jeffrey D. Zahn. "Experimental Demonstration and Numerical Simulation of Organic-Aqueous Liquid Extraction Enhanced by Droplet Formation in a Microfluidic Channel". En ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-16084.

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Organic-aqueous (phenol) liquid extraction is one of the commonly used DNA purification methods. Effective mass transfer of biological material between the discrete fluid phases is key to achieving efficient extraction when designing microfluidic devices based on this technique. In the microscale regime, mass transfer is often diffusion limited. However, mass transfer can be enhanced through the formation of discrete droplets within a microchannel, which leads to a recirculation flow pattern within the droplet. This recirculation increases the mass transfer rate of material to the organic-aqueous interface. In this study, an experimental and computational examination of sample extraction between the organic and aqueous phases through droplet formation is presented. The experiment is conducted within a converging dual inlet microfluidic channel fabricated in PDMS. By controlling the capillary number of the flow, different flow patterns are created in the channel. The flow patterns are examined using a computational fluid dynamics (CFD) simulation. The CFD model successfully simulates the flow behavior under a variety of flow conditions and provides a closer examination of the internal recirculation pattern within the droplet. The experimental sample extraction utilizes a fluorescent dye localization technique and shows that the droplet flow offers a significant improvement in the speed of sample extraction over diffusional mixing. A preliminary test demonstrates the feasibility of using the droplet formation for fast extraction with biological samples.
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Ilin, V., Yu Karlin, A. Laurson, Eu Volkov y S. Dmitriev. "Possible Approach to Cleaning “Problematic” LRW With Large Contents of Suspended Particles, Oils and Other Organic Substances". En The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7146.

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A general structural scheme for cleaning “problematic” liquid radioactive wastes (LRW) containing a large amount of suspended particles, oils and other organic substances has been proposed. The technological scheme includes two main stages: 1) separation of suspended particles, oil product emulsions and the larger part of colloidal particles from LRW by filtration, 2) purification of radioactive waters from radionuclides by membrane-sorption to the levels of radiation safety norms applied. The filtration stage is considered as a three-step process of “problematic” LRW treatment including: 1) “problematic” LRW extraction from storage tanks with a robot type device intended for washing out the bottom sediment (slurry), 2) separation of suspended particles, oil product emulsions and larger part of colloidal particles from LRW by filtration through porous or gauze diaphragms of 0.1 to 10 μm pores (cells) in size, 3) concentration of separated slurry up to 100–200 g/l. Two main options of the membrane-sorption technologies, AQUA-EXPRESS and Reverse Osmosis, for LRW purification have been considered. Two possible options of porous or gauze diaphragms productivity and lifetime increase between their surface regenerations have been shown: 1) possibility of an oxidizer introduction into initial LRW, 2) possibility to rotate a filtering element (disk or cylinder type).
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Bousbaa, Hamza, Khatir NAIMA, Medjahed Lamia, Mohammed Benramdane, Dhinesh Balasubramanian y Anish Jafrin Thilak Johnson. "Physicochemical Characterization and Potential Applications of Biodiesel Produced from Industrial Fish Waste". En Automotive Technical Papers. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2024. http://dx.doi.org/10.4271/2024-01-5106.

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<div class="section abstract"><div class="htmlview paragraph">Biofuels are gaining significant global attention as renewable and alternative energy sources, produced from various materials through different extraction methods and conversion processes. Food industry generates not only substantial organic waste, presenting economic and ecological challenges but also potential opportunities for valorization. This study focuses on recovering industrial fish waste from the manufacture of canned tuna, specifically targeting non-food and abundant fish co-products such as heads, bones, skin, and viscera, which constitute nearly 50% of the fish body. The process involves several steps: oil extraction using Soxhlet extraction, purification, and conversion into biodiesel via transesterification, followed by physicochemical analysis. The experiments revealed that 32.41% of fish waste was in the liquid phase (a mixture of hexane and oil), and the extracted oil accounted for 26.56% of the total fish waste weight (from 1.012 kg of waste, approximately 268.78 g of oil was extracted, equivalent to 280.36 mL). The fatty acid composition influenced the cetane number of the biodiesel. Two types of biodiesel (methyl and ethyl esters) were produced from the extracted fish oil through transesterification with methanol or ethanol and sulfuric acid (H<sub>2</sub>SO<sub>4</sub>). The analysis showed that the produced biodiesels possess properties similar to conventional diesel, indicating their suitability for use in diesel engines. This research highlights the potential of fish waste valorization to reduce fossil fuel consumption and promote sustainable energy solutions.</div></div>
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Kinaci, Emre, John Chea, Kirti Yenkie y Kylie Howard. "Converting Birch Bark Extracts into Bio-based Thermosets". En 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/wcih1760.

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Birch tree barks are regarded as waste in the pulp and papermaking industry and used as fuel. However, this material presents a source that contains many bio-based chemicals suitable for applications ranging from pharmaceuticals, plastics and composites, coatings, and antifeedants. Among the mixture of bio-derived chemicals in birch barks, triterpenoids, such as betulin, betulinic acid, and lupeol, can be present up to 30% weight of dry bark mass. They are highly valued for their anti-tumor, HIV, and inflammatory responses. In our presented work, triterpenoid mixtures were extracted through a Soxhlet extractor using the barks from locally sourced river birch trees (Betula nigra) with an average yield of 10.6% (dry bark mass). The extracted materials were characterized using the Nuclear Magnetic Resonance (NMR), Advanced Polymer Chromatography (APC), High-Performance Liquid Chromatography (HPLC), and hydroxyl number titration to assess the identity, average molecular weight, triterpenoid content, and the number of reactive sites, respectively. The extracts have been used to synthesize bio-based polymers with promising thermal and mechanical properties using minimal processing steps. Birch bark extract naturally contains many potential reactive sites and thus making it advantageous for synthesizing polymers without requiring multiple purification steps. We demonstrate the potentials for increasing the utility of birch bark, contributing to sustainability challenges in materials science and engineering.
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