Bibliografías temáticas / Microfiltration

Literatura académica sobre el tema "Microfiltration"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 7 de julio de 2024

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Artículos de revistas sobre el tema "Microfiltration"

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Chechenikhina, Olga y Vladimir Lazarev. "Microbiological, physicochemical and biotechnological properties of dairy raw materials under intensive technologies". E3S Web of Conferences 537 (2024): 10008. http://dx.doi.org/10.1051/e3sconf/202453710008.

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The purpose of the article is to analyze the microbiological, physico-chemical and biotechnological properties of raw milk obtained under intensive technologies using the Lely Astronaut A4 robotic milking system in comparison with milking operations using milking pipeline machines DA-2M Maiga, subjected to baromembrane sterilization through ceramic microfiltration membranes. It has been established that the use of intensive robotic technologies – the LelyAstronautA4 robotic milking system – can increase milk yield by an average of 12% compared to milking in a milk line using ceramic microfiltration elements (CMFE); reduce bacterial contamination of milk to a content of less than 500 thousand bacteria per 1 ml and decrease titratable acidity by 0.17°T. Research has shown that the optimal process for sterilizing raw milk is microfiltration. Microfiltrational sterilization through CMFE membranes removes 99.9% of bacteria and spores from milk. To normalize the fat content of milk after baromembrane sterilization, the required amount of cream, sterilized by the classical heat method, is added.
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Ben Aim, R. "Microfiltration tangentielle". La Houille Blanche, n.º 7-8 (noviembre de 1986): 547–58. http://dx.doi.org/10.1051/lhb/1986052.

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Fagnani, Rafael, Marisa Marroni Mexia, Ana Amélia Nunes Puppio y Ana Paula Pavão Battaglini. "Sanitary aspects and technological challenges of whole milk microfiltration at low temperatures". Pesquisa Agropecuária Brasileira 51, n.º 8 (agosto de 2016): 990–97. http://dx.doi.org/10.1590/s0100-204x2016000800011.

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Abstract: The objective of this work was to evaluate the effects of whole milk microfiltration at low temperatures on bacterial counts and on its shelf life. The microfiltration process was evaluated at two temperatures (30 and 50ºC) and compared with the slow pasteurization process. Both slow pasteurization and microfiltration reduced the initial counts of aerobic mesophilic and psychrotrophic bacteria, as well as total coliforms in whole milk. Microfiltration at 50ºC was as effective as the pasteurization process, since it reduced the initial count of aerobic mesophilic bacteria in 4.4 log cycles; increased the product's shelf life, which reached 30 days without exceeding 1,000 CFU mL-1; and eliminated coliform counts at the temperatures of 35 and 45ºC, established by the Brazilian legislation. Microfiltration at 30°C reduced the aerobic mesophilic bacteria counts by 2.2 log cycles; however, Escherichia coli was found in the product, which exhibited a shelf life of less than five days. Therefore, microfiltration at 30ºC can be associated with thermal treatments, but, when applied alone, it shows unsatisfactory results.
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Sabo, Štefan, Tomáš Bakalár, Milan Búgel y Henrieta Pavolová. "Hybrid Sorption and Microfiltration Characteristics of Zeolite". Solid State Phenomena 244 (octubre de 2015): 252–57. http://dx.doi.org/10.4028/www.scientific.net/ssp.244.252.

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Industrial wastewater treatment and reuse is one of the principal tasks of present. For this purpose several physical, chemical and combined methods have been used. This paper deals with the study of sorption behaviour of natural zeolite with respect to Zn (II) and Cu (II) followed by cross-flow membrane microfiltration. The experiments realised were aimed at verification of effectiveness of ion exchange of selected metals from wastewater using zeolite – with main component clinoptilolite. The experimental data obtained were fitted using Langmuir and Freundlich isotherms. The sorption capacity was studied for zinc and copper uptake, followed by a study of microfiltration of zeolite suspension using a cross-flow microfiltration device with tubular ceramic membrane. According to experimental results the basic parameters of microfiltration process were evaluated. In comparison with other processes, the hybrid membrane microfiltration offers more effective way of water treatment.
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Schiffer, Simon, Bello Teslim Adekunle, Andreas Matyssek, Martin Hartinger y Ulrich Kulozik. "Effect of Pre-Heating Prior to Low Temperature 0.1 µm-Microfiltration of Milk on Casein–Whey Protein Fractionation". Foods 10, n.º 5 (14 de mayo de 2021): 1090. http://dx.doi.org/10.3390/foods10051090.

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During skim milk microfiltration (nominal pore size of 0.1 µm) at 10 °C, the whey protein purity in the permeate is reduced by an enhanced serum casein permeation, primarily of β-casein. To decrease casein permeation, the possibility of a pre-heating step under pasteurization conditions before the filtration step was investigated, so as to shift the equilibrium from soluble serum casein monomers to impermeable micellar casein. Immediately after the pre-heating step, low temperature microfiltration at 10 °C was conducted before the casein monomers could diffuse into the serum. The hypothesis was that the dissociation of β-casein into the serum as a result of a decreasing temperature takes more time than the duration of the microfiltration process. It was found that pre-heating reduced the β-casein permeation during microfiltration without significantly affecting the flux and whey protein permeation, compared with a microfiltration at 10 °C without the pre-heating step. Furthermore, the addition of calcium (5 and 10 mM) not only reduced the casein permeation and thus increased the permeate purity, defined as a high whey protein-to-casein (g L−1/g L−1) ratio, but also decreased the filtration performance, possibly due to the structural alteration of the deposited casein micelle layer, rendering the deposit more compact and more retentive. Therefore, the possible combination of the addition of calcium and pre-heating prior to microfiltration was also investigated in order to evidence the potential increase of whey protein (WP) purity in the permeate in the case of Ca2+ addition prior to microfiltration. This study shows that pre-heating very close to low temperature microfiltration results in an increased purity of the whey protein fraction obtained in the permeate.
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Hu, Xue Bing, Jian Er Zhou, Yan Xiang Wang, Yong Qing Wang, Xiao Zheng Zhang, Andre Larbot y Michel Persin. "Effect of SnO2 Modification on Permeate Flux of Α-Al2O3 Microfiltration Membrane for Treating Fe(OH)2 Suspensions". Advanced Materials Research 189-193 (febrero de 2011): 489–93. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.489.

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To improve the permeate flux of ceramic membrane, commercial α-Al2O3 microfiltration membrane of 0.2 μm pore diameter was modified with SnO2 nano grains by in situ synthesis method. The permeate fluxes of the membrane for pure water and treating Fe(OH)2 suspensions were studied mainly in the paper. The results showed that the pure water stable permeate fluxes of unmodified and SnO2 modified microfiltration membranes were 0.61 m3h-1m-2 and 1.87 m3h-1m-2, respectively. When treating 1L 0.01 mol∙L-1 Fe(OH)2 suspensions, the permeate fluxes of SnO2 modified membrane was higher than that of unmodified membrane all the time and the clarified permeate was obtained. The results indicated that in situ synthesis method can be successfully used to modify α-Al2O3 microfiltration membrane with SnO2 nano grains for permeate flux increase, and the microfiltration membrane has excellent treatment effect on Fe(OH)2 suspensions. Furthermore, the enhancement mechanism of permeate flux of SnO2 modification microfiltration membrane was discussed initially.
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Laurell, Panu, Heikki Poutanen, Mehrdad Hesampour, Tanja Tuutijärvi y Riku Vahala. "Feasibility and Environmental Impact of NOM Reduction by Microfiltration at a Finnish Surface Water Treatment Plant". Water 15, n.º 10 (10 de mayo de 2023): 1822. http://dx.doi.org/10.3390/w15101822.

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Low-pressure membranes (including microfiltration and ultrafiltration) for natural organic matter removal in drinking water treatment have gained increasing interest in the Nordic countries. Microfiltration can produce stable water quality and requires less space than conventional treatment. Hollow fibre microfiltration coupled with chemical coagulation was tested at a Finnish surface water treatment plant to study its feasibility and environmental impact compared to clarification, rapid sand filtration and ozonation. Microfiltration improved both physical and chemical water quality, while natural organic matter removal was similar to that of conventional treatment. Membrane treatment would increase operational costs by 2.5–3.5 euro cents per m3. Most of the costs derive from chemicals used in membrane cleaning. Membrane treatment is an energy-intensive process, but energy production in the Nordic countries has a low emission factor. Greenhouse gas emissions from operating microfiltration are estimated at 16 g CO2-eq./m3 of permeate. Lowering chemical consumption and using renewable energy in production could decrease total emissions.
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Markovic, Tijana, Predrag Vukosavljevic, Goran Vladisavljevic y Branka Bukvic. "Investigations of hydrodynamic permeability ceramic membranes for microfiltration". Journal of Agricultural Sciences, Belgrade 51, n.º 2 (2006): 151–64. http://dx.doi.org/10.2298/jas0602151m.

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This paper introduces the results of experimental investigations on the influence of operating parameters, such as feed flow rate, temperature, pressure difference in the microfiltration through the ceramic Kerasep membrane. The results confirmed earlier work on the same laboratory device for microfiltration. and they are the main condition for determination of kinetics juice clarification. Apart from investigations on the influence of operating parameters, the influence of membrane moisture on microfiltration was observed.
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Oesterholt, F. I. H. M. y B. A. Bult. "Improving Municipal Waste Water Quality by Effluent Polishing: A Pilot Scale Experiment at Winterswijk, The Netherlands". Water Science and Technology 27, n.º 5-6 (1 de marzo de 1993): 277–86. http://dx.doi.org/10.2166/wst.1993.0507.

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Over a period of three months two filtration methods, i.e. cross flow microfiltration and continuous sand filtrations were tested for their capacity to improve the quality of the effluent from a waste water treatment plant. The removal capacity of both methods was explored for suspended solids, COD, Kjeldahl nitrogen phosphorus, copper and zinc with and without iron flocculation. Without iron flocculation only the suspended solids can be removed. Iron has to be added prior to removal so that suspended solids and phosphorus can be removed in sufficient quantities. In that case, total P can be removed for 70% by means of continuous sand filtration, and for 90 % when microfiltration is being applied. The removal of COD, nitrogen Kjeldahl, copper and zinc is confined to 10 or 20%. From a technical point of view, microfiltration is preferred because of its high removal efficiency for all the components. On the other hand, from a financial point of view, microfiltration is not feasible. Treatment costs for sand filtration and microfiltration are calculated at f 0.15 and f 2.07 respectively per m3 water treated.
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Jokić, Aleksandar, Ivana Pajčin, Jovana Grahovac, Nataša Lukić, Bojana Ikonić, Nevenka Nikolić y Vanja Vlajkov. "Dynamic Modeling Using Artificial Neural Network of Bacillus Velezensis Broth Cross-Flow Microfiltration Enhanced by Air-Sparging and Turbulence Promoter". Membranes 10, n.º 12 (27 de noviembre de 2020): 372. http://dx.doi.org/10.3390/membranes10120372.

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Cross-flow microfiltration is a broadly accepted technique for separation of microbial biomass after the cultivation process. However, membrane fouling emerges as the main problem affecting permeate flux decline and separation process efficiency. Hydrodynamic methods, such as turbulence promoters and air sparging, were tested to improve permeate flux during microfiltration. In this study, a non-recurrent feed-forward artificial neural network (ANN) with one hidden layer was examined as a tool for microfiltration modeling using Bacillus velezensis cultivation broth as the feed mixture, while the Kenics static mixer and two-phase flow, as well as their combination, were used to improve permeate flux in microfiltration experiments. The results of this study have confirmed successful application of the ANN model for prediction of permeate flux during microfiltration of Bacillus velezensis cultivation broth with a coefficient of determination of 99.23% and absolute relative error less than 20% for over 95% of the predicted data. The optimal ANN topology was 5-13-1, trained by the Levenberg–Marquardt training algorithm and with hyperbolic sigmoid transfer function between the input and the hidden layer.
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Tesis sobre el tema "Microfiltration"

1

Till, Steven W. "Crossflow microfiltration of sewage effluents". Thesis, Cranfield University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267216.

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Silva, Claudio Mudado. "Flux prediction in high-shear microfiltration". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0010/NQ59095.pdf.

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Bromley, Alan J. "Slotted and circular pore surface microfiltration". Thesis, Loughborough University, 2002. https://dspace.lboro.ac.uk/2134/13634.

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The work described by this thesis is a comparison of pore opening geometry for true surface microfilters. True surface microfilters can be thought of as very fine sieves, with pore sizes less than 10 microns. All other types of so-called microfiltration membranes do not rely on sieving, but obtain their pore retention rating by particle collection mechanisms similar to depth filters. Particle deposition within such microfilters results in permeate flow rate dechne, for a fixed pressure filtration, or pressure drop rise, for a fixed rate filtration. The true surface microfilter pore geometnes considered were circular and slotted, and microfilters with filtering dimension of less than 10 microns were used. The slotted pore microfilters are not commercially available and had to be made in the laboratory as part of this study. The technique used was to plate nickel onto an existing substrate, thereby reducing the pore dimension until It was within the microfiltration range. The plating was by electroless nickel solution and not by galvanic means. Significant development of the electroless platmg technique led ultimately to the successful manufacture of process scale slotted surface microfilters.
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Tarleton, E. S. "A study of electrically assisted microfiltration". Thesis, University of Exeter, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374950.

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Rjimati, El Arbi. "Microfiltration tangentielle de suspensions particulaires : modélisation". Montpellier 2, 1990. http://www.theses.fr/1990MON20029.

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La caracterisation physique, par microscopie electronique, des membranes minerales microporeuses permet de calculer une permeabilite theorique du milieu filtrant et de mettre en evidence, le cas echeant, une structure composite. La comparaison des valeurs theoriques aux valeurs experimentales, mesurees par permeametrie a l'eau, permet de quantifier cet effet composite ainsi que les interactions possibles entre le permeat et la surface membranaire. La filtration d'une suspension de microparticules de bentonite provoque la mise en place quasi-instantanee d'un depot particulaire tres fin mais homogene sur la surface membranaire. Ce depot joue le role de membrane dynamique, sa resistance a l'ecoulement est preponderante devant celle de la membrane originale. Si la valeur de cette resistance depend peu de la permeabilite de la membrane choisie ou des conditions de circulation du retentat, elle est une fonction croissante de la pression operatoire choisie et de la concentration particulaire de la suspension a filtrer. Une representation parametrique de la variation de la resistance du depot en fonction des parametres operatoires testes est proposee. Enfin, si dans les conditions testees, l'application d'un champ electrique a peu d'effet sur les flux de permeat obtenus, une circulation de grosses particules (promoteurs de turbulence) dans le retentat permet une intensification importante du processus, le flux de filtrat obtenu est multiplie par un facteur 6
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Xu-Jiang, Yazhen. "Contribution a l'étude de la microfiltration". Vandoeuvre-les-Nancy, INPL, 1994. http://www.theses.fr/1994INPL050N.

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Ce mémoire est une contribution à l'étude de la microfiltration et de son application à la clarification de la bière. Il porte sur les deux techniques de microfiltration sur la membrane, frontale et tangentielle. Une première partie bibliographique fait un bilan des connaissances sur ces techniques dans le cas général et pour l'application bière. La deuxième partie, expérimentale, précise les paramètres importants (vitesse tangentielle, pression transmembranaire, mode de démarrage, nature de la membrane et de la bière) et leur incidence sur deux caractéristiques fondamentales de la filtration (flux et turbidité). Elle met aussi l'accent sur la réduction protéique en filtration tangentielle. La troisième partie concerne l'étude des phénomènes à l'interface suspension-membrane. La méthode expérimentale met en œuvre une technique originale de double filtration frontale appliquée d'abord au colmatage de membranes par la solution d'albumine de sérum bovin (BSA), puis transposée à la bière. Elle se termine par l'étude en filtration frontale et tangentielle du dépôt, dont on évalue la résistance spécifique, la compressibilité et la granulométrie. La quatrième partie propose trois axes de développement théorique. Le premier concerne l'évolution des modèles de filtration frontale au cours du temps. Le deuxième est une évaluation théorique des performances d'un lavage périodique à contre-courant applicable en filtration frontale et transposable dans ses conclusions à la filtration tangentielle. Le troisième est une analyse théorique de la microfiltration tangentielle prenant en compte la non-uniformité de l'écoulement et la formation d'un dépôt dans le canal amont
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Rabergeau, Gilles. "Concentration de suspensions bactériennes par microfiltration". Grenoble INPG, 1988. http://www.theses.fr/1988INPG0100.

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Rabergeau, Gilles. "Concentration de suspensions bactériennes par microfiltration". Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37617785d.

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Marchant, Justin Quinton. "The crossflow microfiltration of concentrated titania dispersions". Thesis, Loughborough University, 1999. https://dspace.lboro.ac.uk/2134/27411.

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This work is the subject of an EPSRC-Tioxide Industrial CASE Award, the principal area of study being factors affecting the achievable steady state permeate flux during the crossflow microfiltration of concentrated titania dispersions. The performance of this continuous thickening process is of particular interest to Tioxide as a potential alternative to current batch filtration processes, which delay the manufacturing process.
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Henderson, J. S. "Combined microfiltration and membrane-based affinity separation". Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325959.

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Libros sobre el tema "Microfiltration"

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Munir, Cheryan, ed. Ultrafiltration and microfiltration handbook. Lancaster, Pa: Technomic Pub. Co., 1998.

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1959-, Lindsey Karen, Crull Anna W y Business Communications Co, eds. Membrane microfiltration: Materials, markets & opportunities. Norwalk, Conn., U.S.A: Business Communications Co., 1988.

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Beverage microfiltration: A comprehensive guide. Ames, Iowa: Wiley-Blackwell, 2008.

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United States. Environmental Protection Agency, ed. Microfiltration technology: EPOC Water, Inc. [Washington, D.C.]: U.S. Environmental Protection Agency, [1993], 1993.

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Wang, Zhan, ed. Modelling of the Microfiltration Process. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0471-6.

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1958-, Zydney Andrew L., ed. Microfiltration and ultrafiltration: Principles and applications. New York: M. Dekker, 1996.

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Association, American Water Works, ed. Microfiltration and ultrafiltration membranes for drinking water. Denver, CO: American Water Works Association, 2016.

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Risk Reduction Engineering Laboratory (U.S.), ed. DuPont/Oberlin microfiltration technology: Applications analysis report. Cincinnati, Ohio: Risk Reduction Engineering Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 1991.

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Samer, Adham, ed. Development of a microfiltration and ultrafiltration knowledge base. Denver, CO: AWWA Research Foundation and American Water Works Association, 2005.

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United States. Environmental Protection Agency. Office of Research and Development y Superfund Innovative Technology Evaluation Program (U.S.), eds. EPOC Water Inc. microfiltration technology: Applications analysis report. Cincinnati, OH: National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 1995.

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Capítulos de libros sobre el tema "Microfiltration"

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Porter, Mark C. "Microfiltration". En Synthetic Membranes: Science, Engineering and Applications, 225–47. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4712-2_9.

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Mishra, Munmaya y Biao Duan. "Microfiltration". En The Essential Handbook of Polymer Terms and Attributes, 108–9. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781003161318-107.

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Ismail, A. F. y P. S. Goh. "Microfiltration Membrane". En Encyclopedia of Polymeric Nanomaterials, 1–7. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-36199-9_159-1.

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Selvamuthukumaran, M. "Microfiltration Techniques". En Applications of Membrane Technology for Food Processing Industries, 155–66. First edition. | Boca Raton : CRC Press, 2020.: CRC Press, 2020. http://dx.doi.org/10.1201/9780429276408-6.

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Portugal, Carla A. M. "Milk Microfiltration". En Encyclopedia of Membranes, 1–2. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-40872-4_1534-1.

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Madaeni, Sayed S. "Microfiltration (MF)". En Encyclopedia of Membranes, 1–3. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-40872-4_2208-1.

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Madaeni, Sayed S. "Microfiltration Membrane". En Encyclopedia of Membranes, 1–4. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-40872-4_2209-1.

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Ismail, A. F. y P. S. Goh. "Microfiltration Membrane". En Encyclopedia of Polymeric Nanomaterials, 1250–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-29648-2_159.

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Jaffrin, M. Y. "Dynamic Membrane Microfiltration". En Encyclopedia of Membranes, 1–4. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-40872-4_957-2.

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Jaffrin, Michel. "Dynamic Membrane Microfiltration". En Encyclopedia of Membranes, 616–19. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-44324-8_957.

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Actas de conferencias sobre el tema "Microfiltration"

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Gramms, L. C., J. R. Gimbel, R. W. Bowman y R. R. Craycraft. "Oil and Solids Handling With Ceramic Microfiltration". En International Thermal Operations and Heavy Oil Symposium. Society of Petroleum Engineers, 1997. http://dx.doi.org/10.2118/37527-ms.

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Meliyanti, Meliyanti, Samuel P. Kusumocahyo, Eneng Maryani y Hernawan Hernawan. "Ceramic membrane development and characterization for microfiltration". En SolarPACES 2017: International Conference on Concentrating Solar Power and Chemical Energy Systems. Author(s), 2018. http://dx.doi.org/10.1063/1.5064344.

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AHN, BYUNG HUN, DONG JU MOON, BYOUNG SUNG AHN y CHIA CHI HO. "STUDIES ON MICROFILTRATION OF BINARY PROTEIN MIXTURES". En Proceedings of the 4th International Conference. WORLD SCIENTIFIC, 2004. http://dx.doi.org/10.1142/9789812702623_0117.

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Zhang, Xiaolong, Xiaolin Chen y Hua Tan. "A Numerical Study on Highly Viscous Compound Cancer Cell Microfiltration". En ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66953.

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Cancer is a leading cause of death worldwide. There has been extensive research on cancer in recent decades, with many studies focusing on Circulating Tumor Cells (CTCs), i.e., cancer cells shed into the circulating bloodstream from a primary tumor site. CTCs are mainly responsible for initiating metastases, and can be used as an indicator for early cancer detection. Investigating CTCs and the related detection methods such as microfiltration is of great importance. CTCs as well as other cells are normally composed of highly viscous nucleus and cytoplasm which are encapsulated by the outermost layer of cortical membrane. In order to account for the effects of viscous nucleus and cytoplasm on the microfiltration process and study the dynamic characteristics comprehensively, a realistic model is preferred. In this research, we employ the compound droplet model consisting of three layers, the layer of cell membrane, cytoplasm and nucleus, to capture the full range of CTCs behavior during the microfiltration process. The compound cell deformation and pressure signature during microfiltration are studied numerically. Also discussed are the effects of nucleus-cytoplasm ratio (N/C ratio), their viscosity as well as surface tension on the cell behavior when it squeezing through the filter channel. Our results can gain insight into the physics behind the filtering process and provide some guidance to the design and optimization of such devices.
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Xiao, Guangyi, Huan Zhang, Xiaoli Xie, Shengli Chang y Jingyue Fang. "Fabrication of spectral differential four channel microfiltration array". En Seventh Symposium on Novel Photoelectronic Detection Technology and Application 2020, editado por Junhao Chu, Qifeng Yu, Huilin Jiang y Junhong Su. SPIE, 2021. http://dx.doi.org/10.1117/12.2586298.

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Zhang, Zhifeng, Jie Xu y Xiaolin Chen. "Compound Droplet Modelling of Circulating Tumor Cell Microfiltration". En ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-51957.

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The Circulating Tumor Cell (CTC) is the cancer cell that has shed into the circulation system (i.e. cancer cell in the bloodstream). These CTCs are potential indicators for early cancer detection, which is critical for the whole process in cancer treatment. Among all new techniques, early detection of cancer from a single blood drop sample using the mechanical method by CTC microfiltration is promising for its simplicity, low cost, and ease of use. In the microfiltration of circulating tumor cells, the problem of a single CTC passing through a microfilter at a constant flow rate is a basic model for further device design and optimization. In our present paper, we developed a compound droplet model for the CTC passing through a microfilter. Numerically, we used the Volume of Fraction (VOF), three phase flow method. In this model, we take the blood, CTC cytoplasm and CTC nucleus as three individual fluids/phases. To build a more realistic model, the CTC cytoplasm and nucleus are taken as two fluids with their own surface tension coefficients and viscosities; the viscosity of the cytoplasm is considered as twice that of the bloodstream; the stiffness of the nucleus is set as four times that of the cytoplasm. Through the pressure signature and CTC deformation, the interaction between the compound droplet CTC, bloodstream, as well as the channel wall are studied numerically. As demonstrated in the previous Newtonian single droplet model, this critical passing pressure can be predicted by Young-Laplace equation. However, for the compound droplet model, no equation description is available. Through our study, the critical passing pressure, as well as the dynamic process of CTC passing pressure signature, is provided together with corresponding CTC deformation in each key stage. The pressure signature and deformation difference between the simple droplet model and compound droplet model are also compared. Additionally, the biological parameter, like the radius of cancer nucleus, is also an important parameter in the early cancer detection device design. In the following part of our study, we introduced a clinical parameter called N/C ratio, or nucleus/ cytoplasm ratio, which is a key parameter to discriminate between the healthy cell and tumor cell. By bringing this parameter into our study, the interaction among the nucleus, cytoplasm, bloodstream, as well as the wall of microfilter are studied for soft, medium and hard CTCs. In the end, the drawback of our method is also provided with advice for improvement.
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Haneda, Renata Natsumi y Se´rgio Rodriques Fontes. "Investigation Into the Crossflow Microfiltration Process Utilizing Ceramic Membrane Applied to Bacteria Reduction and Clarifying of Ac¸ai Juice". En ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66121.

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This paper reports the results of the crossflow microfiltration process applied to the reduction of bacteria and retention of particles in suspension of ac¸ai (Euterpe oleracea Mart.) juice. A commercial membrane of α-alumina (Al2O3) in the form of a tube with 1.2μm of average pore size was utilized to investigate the reduction of the bacteria of ac¸ai juice without using high temperatures (pasteurization). This pore size of the ceramic structure was utilized in an attempt to reduce the polarization phenomenon and improve the permeate flux without utilizing the usual enzymatic treatment made in the microfiltration processes that utilize polymeric membrane (Cianci et al., 2005 and Ushikubo et al., 2006). An anthocyanin concentration was also observed during the microfiltration process followed by suspended particles retention as an indicator of ac¸ai juice clarifying. The Scanning Electronic Microscopy (SEM) was utilized as an essential tool to characterize the morphology of the ceramic micro porous structure and to evaluate the formation of a polarization layer on the membrane surface, while the Optical Microscopy was used to analyze the difference in the characteristics between samples of concentrate and permeate.
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Gao, Yong y Shengli Luo. "Membrane Fouling in Coagulation - Microfiltration Treatment Wastewater Containing Silver". En 2010 International Conference on E-Product E-Service and E-Entertainment (ICEEE 2010). IEEE, 2010. http://dx.doi.org/10.1109/iceee.2010.5660936.

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Casadei, Lucia, Patricia Sarchet, Adarsh Choudhury, Shaurya Prakash y Raphael Pollock. "Abstract 475: Improving liposarcoma diagnosis through cross-flow microfiltration". En Proceedings: AACR Annual Meeting 2021; April 10-15, 2021 and May 17-21, 2021; Philadelphia, PA. American Association for Cancer Research, 2021. http://dx.doi.org/10.1158/1538-7445.am2021-475.

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Sutanto, Heri, Jaslin Ikhsan, Endang Widjajanti LFX y Erfan Priyambodo. "Chrome Cation Removal Using Microfiltration Ceramic Membrane From Kaolinite". En 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020). Paris, France: Atlantis Press, 2021. http://dx.doi.org/10.2991/assehr.k.210305.022.

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Informes sobre el tema "Microfiltration"

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Giddings, T. M. y B. A. Farnand. Microfiltration of nickel powder in kerosene. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/304566.

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Farnand, B. y H. Sawatzky. Microfiltration for the dewatering of deoiled tailings pond sludge. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1988. http://dx.doi.org/10.4095/304395.

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Farnand, B. A. y H. Sawatzky. Preliminary investigation of the microfiltration of oil sands tailings pond sludge. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1987. http://dx.doi.org/10.4095/304368.

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HUBER HJ. EVALUATION OF SUPPLEMENTAL PRE-TREATMENT DEVELOPMENT REQUIREMENTS TO MEET TRL 6 ROTARY MICROFILTRATION. Office of Scientific and Technical Information (OSTI), octubre de 2011. http://dx.doi.org/10.2172/1033112.

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HUBER HJ. COMPENDIUM OF COMPLETED TESTING IN SUPPORT OF ROTARY MICROFILTRATION AT SAVANNAH RIVER SITE AND HANFORD. Office of Scientific and Technical Information (OSTI), mayo de 2011. http://dx.doi.org/10.2172/1033110.

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Martinez, Melissa. Lab Basics: Mini Centrifuges. ConductScience, junio de 2022. http://dx.doi.org/10.55157/cs20220601.

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Mini centrifuges are compact benchtop centrifuges designed to meet the centrifugation needs of laboratories with limited space. Primarily used for quick spin-downs, they are particularly suitable for microfuge and PCR tubes. Operating on the principle of sedimentation, mini centrifuges separate molecular lab samples based on density. They find applications in various fields like environmental, chemical, molecular biology, and biomedical research, including mixing PCR master mix and microfiltration. Despite their advantages of space efficiency and ease of use, they are not well-suited for high-output labs due to their small to medium output yield.
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Ilias, S. Treatment of FGD plant wastewater by enhancing microfiltration fluxes. Final report, September 1, 1992--December 31, 1993. Office of Scientific and Technical Information (OSTI), marzo de 1994. http://dx.doi.org/10.2172/10160777.

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De-ashing of coal liquids with ceramic membrane microfiltration and diafiltration. Office of Scientific and Technical Information (OSTI), enero de 1992. http://dx.doi.org/10.2172/6865555.

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Deashing of coal liquids with ceramic membrane microfiltration and diafiltration. Final technical report, August 4, 1992--September 30, 1995. Office of Scientific and Technical Information (OSTI), marzo de 1996. http://dx.doi.org/10.2172/206977.

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Deashing of coal liquids with ceramic membrane microfiltration and diafiltration. Final quarterly technical progress report, October 1--December 31, 1993. Office of Scientific and Technical Information (OSTI), diciembre de 1993. http://dx.doi.org/10.2172/10145760.

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