Technical considerations affecting preparation of ion-exchange resins for disposal

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Division of Waste Management, Office of Nuclear Material Safety and Safeguards, U.S. Nuclear Regulatory Commission , Washington, D.C
Ion exchange resins -- Effect of radiation on., Radioactive waste disposal -- United St
Statementprepared by B.S. Bowerman, P.L. Piciulo.
ContributionsPiciulo, P. L., U.S. Nuclear Regulatory Commission. Division of Waste Management., Brookhaven National Laboratory.
The Physical Object
Paginationxii, 89 p. :
ID Numbers
Open LibraryOL17833654M

Get this from a library. Technical considerations affecting preparation of ion-exchange resins for disposal. [B S Bowerman; P L Piciulo; U.S. Nuclear Regulatory Commission. Division of Waste Management.; Brookhaven National Laboratory.].

For most facilities, resins should only be discarded when the output quality or loss in capacity justifies the re-bedding costs, which can be substantial, as they include removal and disposal of old resin, and purchase and installation of new resin.

Liquid and slurry waste such as ion exchange resins, sludges, oils, etc., is metered into a pyrolyser by a pump. The pyrolysis–reforming THOR system comprises a pyrolysis contactor–pyrolyser (stage one), a reformer–contactor (stage two) and associated filters.

The pyrolyser. Innovations in Ion Exchange. Move resin drums into position and fill with water 2. Insert eductor suction pipe into drum. Connect and secure the discharge hose to the exchange tank.

Turn on supply water. Keep water level in the drum just above Size: 1MB. It is recommended to soak ion exchange resins in demineralised water overnight before placing the ion exchange resins in service. This is especially important for anion exchange resins to make sure they are fully hydrated and for inert resin to reduce their hydrophobicity.

This operation is used to minimize the floating and potential loss of these resins if they are backwashed before the first. For nonhazardous resins, the costs can range from $50 to $ a ton to dispose.

Hazardous, on the other hand, can be over $1, a ton to dispose of it. These costs will depend on the facility’s location, how far it must be hauled, the location state requirements, etc.

Ion exchange resins are the heart of every demineralisation indication of resin degradation and the log books play a vital role in predicting this effect resins currently in use or to shop around for alternatives.

Here are few hints to help you select the correct resins. Study the technical information sheets of the prospective resins.

Details Technical considerations affecting preparation of ion-exchange resins for disposal PDF

Ion exchange resin (IER) technology, on the other hand, is a cost-effective option that meets purification needs across many food processing schemes with minimal limitations. IER technology’s solid polymers are capable of removing ions and organic contaminants in solutions that are passed through them.

Ion exchange occurs when raw water ions diffuse into the bead structure and exchange for the mobile portion of the functional group. Ions displaced from the bead diffuse back into the water solution. CLASSIFICATIONS OF ION EXCHANGE RESINS.

Ionizable groups attached to the resin bead determine the functional capability of the resin. This two-day technical training course entitled 'Introduction to Ion Exchange for Industrial Water Treatment: Plant specification, operation and troubleshotting' ran simultaneously with an advanced version of the course.

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It focused on providing a good basic understanding of plant specification, including the effect of raw water quality, pretreatment requirements, process selection and relating.

Purchase Ion Exchange - 1st Edition. Print Book & E-Book. ISBNBook Edition: 1. resin to Cr 3+ which can then precipitate on the resin as hydroxides. For that reason, it is recommended to periodically perform an acid clean-up of both the SAC and WBA resins with 15% HCl.

Similar considerations apply for recycling rinse waters from the passivation of steel metals with phosphoric acid. A typical composition of such. Dealkalization by weak and strong cation resins is accomplished by exchange of hydrogen ion for hardness ions (and sodium ion in the case of a hydrogen form strong cation resin).

Hydrogen ion combines with alkalinity to form carbon dioxide which is removed by. ResinTech Headquarters. Cooper Road • West Berlin, New Jersey Tel: • Fax: Technical Support Fax: Examination and testing of resins; Seminars for plant operators and engineers; Delivery of special disinfectants that don’t affect ion exchange resins; Analysis of existing plants and processes with comprehensive simulation software; Long track record and experience in ion exchange and adsorbent resin technologies.

Description Technical considerations affecting preparation of ion-exchange resins for disposal FB2

Additional considerations appropriate for solidifying evaporator bottoms and ion-exchange resins are discussed in NUREG/CR, "Technical Considerations Affecting Preparation of Ion-Exchange Resins for Disposal," issued in May by the Nuclear Regulatory Commission's Office of Nuclear Material Safety and Safeguards.

Hence, several water supply companies will have to remove nitrate from ground water. Ion exchange is a relatively simple technique for this purpose, but is characterized by two important disadvantages: regeneration of the ion exchange resins requires large quantities of salt while a voluminous brine is produced which is difficult to dispose by:   This study is based on experimental data from the elution of 60 Co 2+ ions with Na + ions in mixed-bed columns packed with resins used in the cleaning system of a research nuclear reactor.

The operational parameters for conditioning the resins were obtained by washing, separating cationic resins from anionic resins, and eluting radioactive ions from the cationic resins with a solution of 2 N NaCl.

Treatment of Spent Ion-exchange Resins for Storage and Disposal INTERNATIONAL ATOMIC ENERGY AGENCY, Treatment of Spent Ion-exchange Resins for Storage and Disposal, Technical Reports Series No.

IAEA, Vienna (). Download to: EdNote BibTeX *use BibTeX for Zotero. Ion Exchange Resins Chromatographic Separation of Fructose and Glucose with DOWEX MONOSPHERE Ion Exchange Resins Technical Manual Lenntech [email protected] Tel.

+ Fax. + Ion Exchange resins Ion exchange chromatography is the most common method applied for the separation and the purification of biomolecules.

The electrostatic interaction between a charged solute and a counter charge covalently bounded onto the resin is the base of this method of purification.

Wastewater treatment systems face increasingly stringent discharge limitations, in many cases lower than the limits for the supplies used as feedwater.

Ion exchange resins and adsorbent medias are often ideally suited for removal of specific contaminants and/or for polishing the effluent from other wastewater treatment processes.

Ion exchange resins are particularly well suited for the removal of ionic impurities for several reasons: the resins have high capacities for ions that are found in low concentrations, the resins are stable and readily regenerated, temperature effects are for the most part negligible, and the process is excellent for both large and small installations, for example, from home water softeners to.

DOWEX ion exchange resins for HFCS deashing and polishing Technical Manual Dow Liquid Separations DOWEX Ion Exchange Resins Lenntech [email protected] Tel. + Fax. + resins makes it possible to concentrate dilute solutions eco- nomically so that they can be subjected to common refining procedures to recover the metal.

Also, the purity of the waste- water is improved to facilitate disposal. Ion exchange is well known for its use in water softening, where resins are used to replace the calcium and magnesium. Ion-exchange reaction - Ion-exchange reaction - Ion-exchange procedures: Only rarely are ion exchangers used in stepwise procedures, in which the resin is mixed into a container of solution and then removed for further treatment.

Much more frequently the exchanger is packed into a tube or column through which the solution is made to flow. The column arrangement forces the ion-exchange reaction. Ion exchange resins are employed extensively in the nuclear industry to remove the radioactive contaminants such as neutron activation products and fission products which may have leaked from fuel elements.

The spent radioactive ion exchange resins have been produced during the operation of the nuclear facilities in the nuclear by: Ion exchange resins are polymers that are capable of exchanging particular ions within the polymer with ions in a solution that is passed through them.

This ability is also seen in various natural. I tried to ask on our recycling companies, ecological organizations (Greenpeace Russia for example), are there any technologies of recycling ion-exchange resin, and I have no answers and replies yet.

Other used filter media (Pyrolox, Filter AG, carbon etc.) are good (and often used by our clients) as anti-slipping winter coverings (on ice.

Thus, cation exchange resin in a water softener is rinsed with a brine solution to remove the calcium from the resin bed. This is known as regeneration. The ion exchange process is used to soften water, deionize water, scavenge metals, and recycle waste water (another form of deionization).

Suspended solids content greater than 10 ppm may cause resin blinding. The pH of the influent water may affect the ion exchange resin selection. Oxidants in ground water may damage the ion exchange resin.

Wastewater is generated during the regeneration step and will require additional treatment and disposal. Data Needs. upgrades, resin cleaning, resin replacement, disposal of spent resins or complete regeneration services.

With this in mind, let's take a closer look at the technology and operation of ion exchange resins and processes used today in industrial water treatment systems. Ion Exchange Resins. There are four major classes of resins used in industrial.The objective of this study is to evaluate the efficacy of commercial ion exchange resins and granular activated carbon (GAC) materials which will enable direct removal of all iodine species present in Hanford groundwater through treatment at the W pump and Size: KB.