Preventing fouling of ion-exchange resins - II

Journal Article · Wed Sep 01 04:00:00 EDT 1982 · Chem. Eng. (N.Y.); (United States)

OSTI ID:5904382

Pelosi, P; McCarthy, J

Reports on agents that can reduce the efficiency of ion-exchange resins, together with some simple field tests used to confirm fouling. The problem of fouling by oily or greasy materials is encountered almost exclusively in cation resins. Treatment with a nonionic surfactant-based alkaline cleaner is the most effective approach to the removal of oily and greasy foulants. Cation resins can be treated in an offline cleanup or by maintenance feed to the backwash water. The major problem associated with silt or clay fouling is the impedance to water flow caused, and the resulting channeling of impurities through the bed. Surfactant/alkaline cleaners are highly effective in removing silt and clay from the bed. Other topics covered include colloidal silica fouling, testing for ''organic'' fouling, and a field test to confirm iron fouling. Concludes that the increased use of ion-exchange equipment and boiler-water treatment programs formulated for use with ''pretreated'' water has heightened the need for ionexchangers to operate as effectively as possible. Fouling of ionexchange resin by metal oxides, salts, oil, silt, silica and various organic compounds can result in a reduction of exchange efficiency. Proper selection of cleaning programs can restore much of this lost efficiency. The implementation of chemical maintenance programs can often avert the recurrence of fouling and assure good water quality.

• Research Organization: Drew Chemical Corp., One Drew Chemical Plaza, Boonton, NJ 07005
• OSTI ID: 5904382
• Journal Information: Chem. Eng. (N.Y.); (United States), Journal Name: Chem. Eng. (N.Y.); (United States) Vol. 89:18; ISSN CHEEA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
CHALCOGENIDES
CLEANING
EFFICIENCY
FOULING
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
OILS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
RESINS
SALTS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SILT