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Showing 1 to 20 of 206 for “"Ultrafiltration"”.
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Designing Magnetically Responsive Ultrafiltration Membranes
<p>Ultrafiltration (UF) membranes developed out of a need for protein separation processes. Currently, they are used in a variety of industries ranging from food manufacturing to pharmaceuticals for two main purposes: concentration, separation, and buffer exchange. UF membrane processes in product …
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Evaluating Winemaking Applications of Ultrafiltration
Ultrafiltration (UF) is a membrane-based technology that separates liquid feed by a molecular size principle, producing permeate with smaller molecules and retentate with larger molecules. Widely used in water treatment, it finds application in the food and beverage industries for processes such as …
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The ultrafiltration of biological macromolecules.
Thesis. 1976. Ph.D.--Massachusetts Institute of Technology. Dept. of Chemical Engineering.
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Assessing Biofiltration Pretreatment for Ultrafiltration Membrane Processes
… coagulation-clarification and upstream of an ultrafiltration (UF) membrane process was assessed for its treatment effectiveness. The impact of biofiltration pretreatment on UF membrane performance was evaluated holistically by investigating the native source water chemistry and extending the …
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Novel internally-staged ultrafiltration for protein purification
A new ultrafiltration technique based on a multimembrane stack has been developed to fractionate proteins closer in molecular weight than conventionally possible. The technique is illustrated here by obtaining a pure protein product from a binary protein mixture. By employing membranes in series …
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Hollow Fiber Ultrafiltration of Water Extracts of Soybeans
Made available in DSpace on 2014-12-13T19:47:44Z (GMT). No. of bitstreams: 1 7915408.pdf: 7836603 bytes, checksum: 26a67ea0454cc7053c8be0304b6ebba6 (MD5) Previous issue date: 1979
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Resistance-in-series modeling in high-shear rotary ultrafiltration
… working (MW) industry. In high-shear rotary ultrafiltration (HSR-UF), disk membranes are rotated at speeds up to 1,750 rpm to generate hydraulic turbulence, which scours the membrane surface. Thus, the pump is required only to provide transmernbrane pressure and a small amount of …
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Dextran Polymer Fractionation by Production Scale Chromatography and Ultrafiltration
… of gel permeation chromatography (GPC) and of ultrafiltration (UF) theory have been made. The aims of the project were to fractionate dextran, a polyglucose, on an existing chromatograph to achieve more optimum conditions of operation and to eliminate the silica dissolved from the …
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Ultrafiltration in renal glomerular capillaries : theoretical effects of ultrastructure
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1994.
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Vertically-aligned carbon nanotube membranes for water desalination and ultrafiltration
Even though the earth is 70% covered with water, there is a severe shortage of fresh water. Modern water filtration techniques includes Reverse Osmosis (RO), Forward Osmosis (FO), and Solar Distillation etc. Due to its high separation performance and comparatively low prices, membrane technology is …
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Characterisation of feed and membrane properties for industrial ultrafiltration management
The effective industrial management of ultrafiltration (UF) membranes requires an assessment of the impact of feed and membrane characteristics on fouling behaviour in complex feed scenarios. However, this assessment is limited by current understanding of (a) the utility of common foulant …
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Lipoprotein Lipase Inhibitor Removal During Ultrafiltration of Renal Failure Patients
… but subsequent treatment with an isolated ultrafiltration technique did appear to remove an inhibitory substance as evidenced by a 22-66% inhibition of lipolytic activity by the ultrafiltrate. It is proposed that the triglyceride-lowering effect observed by others subsequent to …
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Process Engineering Characteristics of the Hollow Fiber Ultrafiltration of Skimmilk
… and mass-transfer characteristics of the ultrafiltration of skimmilk was studied using a pilot-scale hollow fiber membrane unit. The independent variables were transmembrane pressure, flow rate, temperature and feed concentration and the major measured variable was permeate flux (J). …
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A Study of the Mechanism of Fouling of Ultrafiltration Membranes
Made available in DSpace on 2014-12-13T19:47:45Z (GMT). No. of bitstreams: 1 8009106.pdf: 5690737 bytes, checksum: 450415028d3964cabfb0765d026ad7b3 (MD5) Previous issue date: 1979
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Bestimmung des Ausmaßes der Proteinbindung von Arzneistoffen mittels automatisierter kontinuierlicher Ultrafiltration
… Gleichgewichtsdialyse werden vor allem Ultrafiltrationstechniken angewendet. Neuere Verfahren stellen verschiedenste kapillarelektrophoretische Methoden dar. Allen Verfahren ist gemein, dass es sich um In-vitro-Methoden handelt. Als einzige In-vivo-Methode hat sich die Mikrodialyse …
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The fractionation of dextran polymer by ultrafiltration to yield clinical products
A review of ultrafiltration (UF) theory and equipment has been made. Dextran is fractionated industrially by ethanol precipitation, which is a high energy intensive process. The aims of this work were to investigate the fractionation of dextran using UF and to compare the efficiency and costs of UF …
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Enzymatic Modification of Soy Proteins in an Ultrafiltration - Enzyme Reactor System
Enzymatic modification offers a safe, mild, and efficient means of improving functional properties of proteins. Current methods for producing enzyme hydrolyzates have several problems, among them (a) the high cost of the enzyme which can be used only once in the traditional batch process, (b) the …
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Mechanisms of MS2 bacteriophage removal by ultrafiltration membrane with different foulants
An ultrafiltration unit with a polyvinylidene fluoride (PVDF) membrane of 40 nm nominal pore size was used to study bacteriophage MS2 removal under different membrane conditions. The membrane conditions were subject to fouling of soluble microbial products (SMP), which was extracted from membrane …
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Color and TOC removal from pulp and paper wastes by ultrafiltration
Ultrafiltration studies were conducted to determine a treatment approach to remove color and organic carbon from the pulp and paper wastewaters at the Union Camp Corporation, Franklin, VA. Analysis of data collected during this research indicate that ultrafiltration can produce an effluent with …
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