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2 edition of Liquid axial mixing in fluidised beds of ion exchange resin found in the catalog.

Liquid axial mixing in fluidised beds of ion exchange resin

Atunmibi Bamidele Adekunle

Liquid axial mixing in fluidised beds of ion exchange resin

measurement of liquid axial mixing as a function of liquid distributor design and resin bed height using conductivity tracing and microprocessor based data acquisition and interpretation.

by Atunmibi Bamidele Adekunle

  • 297 Want to read
  • 31 Currently reading

Published in Bradford .
Written in English


Edition Notes

M.Phil. thesis. Typescript.

SeriesTheses
ID Numbers
Open LibraryOL13977931M

Ion-exchange resin, any of a wide variety of organic compounds synthetically polymerized and containing positively or negatively charged sites that can attract an ion of opposite charge from a surrounding resins commonly consist of a styrene-divinylbenzene copolymer (high molecular weight substance), although other compositions, such as methacrylic acid–divinylbenzene and phenol. Ion exchange usually describes a processes of purification of aqueous solutions using solid polymeric ion exchange precisely, the term encompasses a large variety of processes where ions are exchanged between two electrolytes. Aside from its use to purify drinking water, the technique is widely applied for purification and separation of a variety of industrially and medicinally.

mass transfer and ion exchange kinetics. Even under high flow rate conditions the dissolved ionic contaminants should be easily removed by deep-beds of ion exchange resins. Normally the mixed bed consists of cation resin initially in the hydrogen form and anion resin in the hydroxide Size: KB. to mm in diameter and are utilized in columns or tanks with resin beds typically about three feet deep. Water passes through the bed of resin where the exchange takes place and when exhausted, they are regenerated with salt, acid or caustic depending upon the process. IEx resins contain functional groups that ION EXCHANGE

The ion exchange capacity is expressed as eq/L (equivalents per litre of resin). The unit of mole should be avoided altogether in ion exchange, as it does not take valence into account and brings only confusion. For reference: 1 eq = 1 mole / valence. The operating capacity is always smaller than the total capacity. We will see why. The structure (matrix and functional groups) of ion exchange resins is described in other pages, as well as details of total and operating ion exchange capacity. The importance of ionic form In expressing the results of most resin properties, the ionic form should always be mentioned, as the values are different according to the ions in the.


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Liquid axial mixing in fluidised beds of ion exchange resin by Atunmibi Bamidele Adekunle Download PDF EPUB FB2

Particle segregation and intermixing have been studied in 50 mm i.d. and m long solid−liquid fluidized bed (SLFB). An ion-exchange resin was used as a solid phase in five size ranges with. Ion Exchange/Resin Adsorption. Control: Liquid transfer equipment (pumps, piping, pipe fittings, valves and instruments) in contact with process liquids or chemicals should be fabricated from materials that are chemically-resistant to the liquid streams.

The use of two different models to describe the axial mixing of solids in fluidised beds Article in Chemical Engineering Science 57(14) July with 11 Reads How we measure 'reads'. Liquid Separations DOWEX™ Ion Exchange Resins Not only are the accumulated solids removed, but ion exchange resin can go with it, resulting in a reduced capacity, due to resin inventory.

If the backwash flow rate is controlled at the backwash inlet, pressure can be released within the ion exchange resin bed and mixed beds. Page 5 of 9 File Size: 85KB.

The dispersion model and the countercurrent backmixing (CCBM) model for axial solid mixing in fluidised beds show a close proximity in a wide interval of conditions. This is particularly clear when fitting the mixing data presented in this work from experiments carried out in slugging by: peroxide with ion exchange resins.

The reaction can cause slight to severe degradation of the resin, pos-sibly producing explosive reaction products. Also, the use of H2SO4 to regenerate cation resins is typically discouraged because CaSO4 can precipitate in the ion exchange resin.

Since the performance of ion exchange resins is dependent onFile Size: KB. Mixed bed resin Mixed bed ion exchange resin for water treatment. Mixed bed resins or mixed bed ion exchange resins are mainly used in the water purification industry for polishing process water to achieve demineralized water quality (such as after a reverse osmosis system).

Mixed bed as the name states consists of strong acid cation exchange. the resin is loaded, commissioned and operated correctly.

The following information gives guidelines for the loading and commissioning of different types of ion exchange plants. General Supplied Resins Check that the resin types and quantities which were supplied are identical with the.

Liquid–solid circulating fluidized bed (LSCFB) is an integrated two‐column (downcomer and riser) system which can accommodate two separate processes (adsorption and desorption) in the same unit with continuous circulation of the solid particles between the two columns.

Control of Ion-exchange Processes for Treatment of Radioactive Wastes), the other in (Technical Reports Series No.

Treatment of Spent Ion-exchange Resins for Storage and Disposal). Since the publication of those reports, many new developments have been reported for improving the efficiency of ion exchange process applications. For example. a resin with an exchange capacity of 1 eq/L could remove g of divalent zinc (Zn+2, molecular weight of 65) from solution.

Much of the experience with ion exchange has been in the field of water softening: therefore, capacities will frequently be expressed in terms of kilograins of calcium carbonate per cubic foot of resin.

Ion-exchange Technology II: Applications presents an overview of the numerous industrial applications of ion-exchange materials.

In particular, this volume focuses on the use of ion-exchange materials in various fields including chemical and biochemical separations, water purification, biomedical science, toxic metal recovery and concentration, waste water treatment, catalysis, alcohol. Ion exchange is an effective, versatile means of conditioning boiler feedwater.

The term “ion exchange” describes the process: as water flows through a bed of ion exchange material, undesir-able ions are removed and replaced with less objectionable ones. For example, in softening pro-cesses, calcium and magnesium ions (hardness) are exchangedFile Size: 94KB.

Thermax’s Chemical business is a leading global manufacturer of TULSION ® and TULSIMER® brand Ion Exchange Resins and copolymer products. It has pioneered in the field of Water and Fuel Treatment Chemicals, Oil Field Chemicals, Paper chemicals, and Construction chemicals to a spectrum of more than 40 Industry sectors and plus references.

Fluidized bed operation in adsorption and ion exchange has been studied for heavy metals removal from liquid phase to a chelating resin and for the determination of mass transfer rates in a liquid magnetically stabilized fluidized bed of magnetic ion exchange particles (Hausmann et al.,Menoud et al., ).

The six-volume CRC Handbook of Ion Exchange Resins reviews the application of ion exchange resins to inorganic analytical chemistry.

Extracted from over 6, original publications, it presents the information in over 1, tables complemented by concise descriptions of analytical methods involving virtually all the elements of the periodic by: ION EXCHANGE RESINS Ion exchange resin is a cross-linked. porous polymer substance containing functional (ionogenic) groups with mobile ions, which may be replaced with ions of the same charge dissolved in the surrounding liquid media.

Structure of ion exchange resins Ion exchange equilibrium Properties of ion exchange resins Strong Acid Cation.

This is further passed through ion exchange resin units of STRONG ACID CATION & WEAK BASE ANION resin beds for ash removal. The ion exchange treated feed solution after evaporation gives 87 º DS liquid glucose.

BENEFITS OF ION EXCHANGE TREATMENT. Removal of alkaline earth salts like CaCl 2, MgSO 4, NaCl. A wide variety of ion exchange resin price options are available to you, There are 1, suppliers who sells ion exchange resin price onmainly located in Asia. The top countries of suppliers are China, Malaysia, from which the percentage of ion exchange resin price supply is 98%, 1% respectively.

An ion-exchange resin or ion-exchange polymer is a resin or polymer that acts as a medium for ion is an insoluble matrix (or support structure) normally in the form of small (– mm radius) microbeads, usually white or yellowish, fabricated from an organic polymer substrate.

The beads are typically porous, providing a large surface area on and inside them the trapping of. Types of ion Exchange resins Different types of Ion Exchange Resins Cation Exchange Resin ♦ Strong Acid Cation (SAC) ♦ Poly styrene based resins with sulfonic Acid Group (-SO 3H) as functional group ♦ Can exchange all the cations.

(Eg. SAC in H form can remove Na ion from a solution containing NaCl as well as NaHCO 3)File Size: KB.Powdered resin has performed well in condensate, for both filtration and ion exchange. Historically, a powdered resin system has been rated at an operating ion exchange capacity of ~2 meq/gm dry precoat.

Typically, an equivalent precoat mix of resin would be 44% cation resin in the (H +) form and 56% anion resin in the (OH-) Size: KB.performance of the ion exchange process.

When the performance of an ion exchange resin bed has changed, it is a clear indication that at least one factor in the entire process has changed.

Therefore, a very effective method of troubleshooting an ion exchange resin bed is to view the.