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Friday, November 20, 2020 | History

2 edition of Separation of finely dispersed liquid-liquid suspensions by flow through fibrous media. found in the catalog.

Separation of finely dispersed liquid-liquid suspensions by flow through fibrous media.

Lloyd Allen Spielman

Separation of finely dispersed liquid-liquid suspensions by flow through fibrous media.

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Published by University Microfilms in Ann Arbor(Mich.) .
Written in English


Edition Notes

Xerox copy of dissertation submitted in partial satisfaction of the requirements for the degree of Ph.D. in Chemical Engineering, University of Calfornia, Berkeley, 1968.

ID Numbers
Open LibraryOL21392754M

A method and apparatus for clarifying liquids contaminated with suspended materials that do not readily separate by gravity, is disclosed. A flowing stream of the contaminated liquid is initially passed to a mixing zone at a predetermined flow velocity and intimately mixed with a gas stream to form a multiphase liquid-contaminant-gas stream. The multiphase stream is next dispersed into a novelty designed flotation tank means having a U-shaped quiescent vessel of increased volume flow area maintained at a reduced pressure whereby the dissolved gas is caused to break out of solution in the form of finely dispersed gravity density reducing microscopic bubbles which, along with the. Description of the particles to be separated in the suspension and the separation strategy No matter, which kind of production of recycling paper will be the application of a separation process for inorganic and organic fines, the mixture is a composition of fibres, fibre broke, fibre fibrils, hemicelluloses, various chemical additives of the. , Fluent Material Handling, With Receiver or Receiver Coacting Means, for: (1) the transfer of fluent material, gaseous, liquid or flowable granular solids, through a flow confining system, the source and terminal or receiver parts of which are normally separable, i.e., one or both parts are portable or are otherwise capable of or intended.


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Separation of finely dispersed liquid-liquid suspensions by flow through fibrous media. by Lloyd Allen Spielman Download PDF EPUB FB2

Liquid-liquid dispersions with drop sizes less than μm cannot be separated using gravity settlers, but need more effective separation tools. In this situation fibre beds represent a relatively simple and low-cost form of pre-separation equipment to enlarge the droplets by drop coalescence as a first step in gravity by: Emulsions separation through porous fibrous media is a popular and complex process.

in the system “liquid–liquid” in film flow over the working surface of the rotor of a centrifugal mass. L dispenS plan w.6 X/H5 Continuous separation of liquid/liquid dispersions the dispersion enters is z, so that at z = O the drop diameter is io and the dispersed phase hold-up fraction is Eo.

The drops are assumed to move in plug flow through the dispersion so that the drop size is constant at any by:   Separation techniques are involved in a great number of processing industries and represent, in many cases, the everyday problem of a practicing engineer.

In Cited by: 1. Spielman LA () Separation of finely dispersed liquid–liquid suspensions by flow through fibrous media. University of California, Berkeley. Google ScholarCited by: 1. liquid-liquid emulsions can reach Suspensions by Flow through Fibrous Media.

Wastewaters from many industrial processes may contain significant quantities of free and dispersed oils. [15] Spielman, L. Separation of Finely Dispersed Liquid-Liquid Suspensions by Flow Through Fibrous Media.

Ph.D. Dissertation, University of Californ ia, Berkeley, Suspensions by Flow Through Fibrous Media. Ph.D. Disserta- group has been the separation of dispersed mineral oils of different of filter media for liquid-liquid separation in many.

L.A. Spielman, Separation of finely dispersed liquid–liquid suspensions by flow through fibrous media, Ph.D. Dissertation, University of California, Berkeley (). Spielman, L. A., “Separation of Finely Dispersed Liquid- Liquid Suspensions by Flow through Fibrous Media,” Ph.D.

thesis, University of California, Berkeley, Spielman, L., Goren, S. L., ENVIRON. SCI. TECHNOL. 2, (). Spielman, L., Goren, S. L., to be published ().

Stimson, M., Jeffery, G. B., Proc. RoJ~. SOC. L.A. Spielman, Separation of finely dispersed liquid–liquid suspension by flow through fibrous media, Ph.D., University of California, Berkeley (). Previously known sorting centrifuges achieve poor separation results with highly concentrated, finely dispersed suspensions due to insufficient de-suspension.

DOLLAR A The method and the device for efficiency and / or selectivity-enhanced sorting centrifugation or sorting flow centrifugation achieves an increased separation of the constituents to be separated in the separation chamber of a. structure, topology of the fiber bed, and emulsion flow through the filter media [11].

Sareen et al. [12] and Grilc et al. [13,14] have pointed out the importance of fluid velocity to emul-sion flow as it controls the coalescence mechanisms and probability of droplet coalescence. Some res-earchers consider also the droplet size as a highly.

L.A. Spielman, Separation of finely dispersed liquid–liquid suspensions by flow through fibrous media, Ph.D. Dissertation, University of California, Berkeley, Liquid Suspensions by Flow Through Fibrous Media.

Ph.D. of filter media for liquid-liquid separation in many industrial applications. quantities of free and dispersed oils. Classical. A suspension is a 2-phase system consisting of a finely divided solid dispersed in a solid, liquid, or gas. Suspension Preparations contains.

or to flow through a syringe. The addition of an inorganic electrolyte to an aqueous suspension will alter the zeta potential of dispersed particles and if this value is lowered sufficiently, then.

Liquid-solid separation involves the separation of two phases, solid and liquid, from a suspension. It is used in many processes for the: 1. recovery of valuable solid component (the liquid being discarded); 2.

liquid recovery (the solids being discarded); 3. recovery of both solid and liquid; or 4. recovery of neither phase (e.g., when a liquid is being cleaned prior to discharge, as in the. Suspensions, treated as continuous media, provide the basis of sedimentation, flows through porous media and filtration.

The book also considers particle aggregations, and thickening is analyzed in depth. Lastly, two chapters cover the fundamentals and application of rheology and the transport of suspensions. Filtration is the separation of suspended impurities from liquid or gas by passing the fluid through a porous membrane that retains the particles on its surface or in its pores.

Since separation of liquid-solid suspensions is often different from separation of dust-laden gases, including aerosols, we shall discuss them separately. It involves the separation, removal, and collection of a discrete phase of matter existing in a dispersed or colloidal state in suspension.

This separation is most often performed in the presence of a complex media structure in which physical, physiochemical and/or electrokinetic forces interact. stream. The coalesced droplets flow axi-ally in the horizontal direction through a settling zone.

If the specific gravity of the dispersed phase is greater than that of the con-tinuous phase (i.e., aqueous-from-hy-drocarbon separation), the coalesced droplets settle downward by gravity and are collected in a sump at the bot-tom of the housing.

Solid/fluid separation is a major element in the processes performed in pharmaceutical, food, beverage, water, pulp and paper industries. Several books now exist on the more esoteric aspects of the techniques, but accounts of the fundemental principles involved are few.

Suspensions Features desired in pharmaceutical suspensions: • Slow settling and readily dispersed when shaken • Acceptable odor and color. • Gets easily into syringe or flows easily through a needle (parenteral). • It should be physically, chemically and. A suspension is a 2-phase system consisting of a finely divided solid dispersed in a solid, liquid, or gas.

Preparations contain finely divided drug particles (the suspensoid) distributed somewhat uniformly throughout a vehicle in which the drug exhibits a minimum degree of solubilitySuspension is a coarse dispersion in which insoluble solid particles of > μm are dispersed in a liquid medium.

a COARSE suspension containing finely divided insoluble material suspended in a liquid medium ; 2-phase system (can pour or flow through needle; re - syringeability) dispersed phase must stay in suspension at least long enough to remove the correct dose for oral preparations and the correct proportion for topical prep.

beer, distilled spirits, and allied beverages. In the process of filtering through fibrous composites, retention of contaminants could be achieved through one or both mechanisms: mechanical filtration and electrokinetic adsorption. In mechanical filtration, contaminating particles are.

Processes for the high efficiency removal liquid aerosols from gaseous streams and coalescing filters for carrying out such processes are provided. The filter comprises a porous medium having a critical surface energy less than the surface tension of the liquid to be removed and the dynamic film thickness of the liquid to be removed is from about D to about D, where D is the mean pore.

Coanda-Effeet Separation Separation of oil/water mixtures by utilizing the fluid-dynamic phenom- enon called the "Coanda effect" is a new concept in liquid/liquid separation.

The basic principle of this process was proposed by Henry Coanda, and the Navy has designed a separator capable of treating bilge and ballast waste- waters by the wall. The term liquid membrane transport includes processes incorporating liquid-liquid extraction (LLX) and membrane separation in one continuously operating device.

It utilizes an extracting reagent solution, immiscible with water, stagnant or flowing between two aqueous solutions (or gases), the source or feed, and receiving or strip phases. Lloyd Allen Spielman has written: 'Separation of finely dispersed liquid-liquid suspensions by flow through fibrous media' Can s waves travel through solid and liquid media.

yes they can but they. flow then goes from the outside of the separator to the inside. The large coalesced drops are repelled by the separators and collected in the bot-tom sump. The purified LPG passes through the separators and exits at the bottom of the housing.

Stages The liquid-liquid coalescing system operates in three stages: separation of. Bernabé and A. Maineult, Physics of Porous Media: Fluid Flow Through Porous Media, Treatise on Geophysics, /B, (), (). Crossref Marco E. Rosti, Luca Cortelezzi and Maurizio Quadrio, Direct numerical simulation of turbulent channel flow over porous walls, Journal of Fluid Mechanics,(   a.

Cl Gas Separation: Processes, will take a process including a liquid separation step in a Class 95 operation (e.g., regenerating a scrubbing liquid in a gas scrubbing operation, etc.). A purely physical separation, e.g., filtering, specifically directed to mineral oil, is classified in this class (), subclasses +.

A suspension is also called a dispersed system since there are particles all over the liquid. Flocculation is the formation of floccules in a suspension.

That can happen spontaneously or due to the presence of flocculating agents. There are suspensions that can be either flocculated or deflocculated. The main difference between flocculated and.

A method and apparatus for separating immiscible liquids in a dispersion containing an aqueous liquid and at least one dispersed non-aqueous liquid by passing the dispersion through a series of absorbents, preferably polymeric.

The direction of the flow through the absorbent is periodically changed. The period required before a change of the flow direction is established by the differential.

percentage (often >50%) of finely dispersed solids with a stiff consistency intended for topical application. One class is made from a single-phase aqueous gel (e.g., Carboxymethylcellulose Sodium Paste USP).

The other class, the fatty pastes (e.g., Zinc Oxide Paste USP), consists of thick, stiff ointments that do not ordinarily flow at body. Abstract: A method and apparatus for the separation of an emulsion of at least one dispersed phase emulsified in at least one continuous phase of different density wherein the emulsion is passed into a vessel and axially through a fixed coalescing bed for coalescing the dispersed phase, and continuing the flow over a guide wettable by the.

Download Fibrous Filter Media Book For Free in PDF, EPUB. In order to read online Fibrous Filter Media textbook, you need to create a FREE account. Read as many books as you like (Personal use) and Join Over Happy Readers.

We cannot guarantee that every book is in the library. Consider, for example, two different types of flow of interest with identical optical setups and methods; in stratified liquid–liquid flows with a single, continuous, and stable interface, large RI differences can be tolerated for high-accuracy measurements, whereas in a finely dispersed liquid–liquid flow or a concentrated solid–liquid.

Ultracentrifugation is a means of separation of colloidal particle by size. This process is often used in the preparation of proteins. Suspensions may be defined as preparations containing finely divided drug particles (between 1 and 50 micrometers in diameter) distributed uniformly throughout a fluid.

1) Can't mix powder with liquid to form suspensions 2) Ingredients from tablets and capsules aren't wetted by GI fluids, which leads to dissolution problems (incomplete absorption) 3) Caking can occur (solid mass forming at bottom of bottle) 4) Particle aggregation - small particles form larger ones and fall out suspension.A thermoplastic polymer composition comprising a thermotropic polymer and to 5% by weight of the composition of a finely dispersed particulate inorganic additive wherein the additive is a material having at least 95% by weight of particles with at least one dimension less than 1 micron and preferably less than micron and is an organophilic or organophobic material which has a.Introducing more profound and in-depth treatises related to the liquid-liquid finely dispersed systems (i.e., emulsions and double emulsions), this book describes a new theory developed through .