Process and products of thermochemical treatment of waste silica gel with sodium hydroxide solution

Journal Article · Tue Oct 20 00:00:00 EDT 1987 · J. Appl. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:5058402

Vorob'ev, N I; Murashkevich, A N; Pechkovskii, V V; Sechko, S I; Berezutskii, S S; Ivkovich, N A

Study of thermochemical treatment of waste silica gel with sodium hydroxide solution in a wide range of influencing factors (temperature, treatment time, initial reactant ratio) showed that the highest degree of transfer of silica into solution, 93-95%, is attained at the ratio SiO/sub 2/:Na/sub 2/O = 1:1.12-1.26. The contents of aluminum- and fluoride-containing impurities in the sodium metasilicate solution were found at the ratio SiO/sub 2/:Na/sub 2/O = 1:2.06. The good complexing properties of the resultant sodium aluminosilicate, its particle-size composition, and its behavior during heat treatment suggest that it is likely to be an effective component of detergent materials.

• OSTI ID: 5058402
• Journal Information: J. Appl. Chem. USSR (Engl. Transl.); (United States), Vol. 60:5; Other Information: Translated from Zh. Prikl. Khim.; 60: No. 5, 972-977(May 1987)
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
DETERGENTS
WASTE PRODUCT UTILIZATION
SILICA GEL
MATERIALS RECOVERY
PURIFICATION
THERMOCHEMICAL PROCESSES
SODIUM HYDROXIDES
ACTIVATION ENERGY
SODIUM SILICATES
SYNTHESIS
ALUMINIUM FLUORIDES
ALUMINIUM HYDROXIDES
COMPLEXOMETRY
IMPURITIES
SILICON FLUORIDES
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
WASTE PROCESSING
ADDITIVES
ADSORBENTS
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
EMULSIFIERS
ENERGY
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXIDES
MANAGEMENT
OXYGEN COMPOUNDS
PROCESSING
RECOVERY
SILICATES
SILICON COMPOUNDS
SODIUM COMPOUNDS
SURFACTANTS
WASTE MANAGEMENT
WETTING AGENTS
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management
400201 - Chemical & Physicochemical Properties