Ultrafiltration of sulfite liquors for separation of lignosulfonates removed from water by coagulation
This paper attempts to select an ultrafilter retaining lignosulfonate (LS) fractions precipitated by coagulants and to study the relationships of their concentration and efficiency of removal from water by coagulants. The material studied - sulfite liquor from the Syas' pulp and paper combine - was fractionated with the use of ''Vladipor'' cellulose acetate ultrafiltration membranes of various pore sizes. Data on the efficiency of removal from water of LS fractions retained by membranes differing in pore size are presented. It is concluded that ecologically safe LS fractions (removed almost completely by the coagulant) can be obtained by ultrafiltration of technical liquor through UAM-500 membranes under 0.7 MPA pressure.
- Research Organization:
- A.V. Dumanskii Institute of Colloid Chemistry
- OSTI ID:
- 6938822
- Journal Information:
- J. Appl. Chem. USSR (Engl. Transl.); (United States), Vol. 58:10, PT. 2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
LIGNIN
FLOCCULATION
SULFITES
FILTRATION
SULFONATES
WASTE WATER
WATER TREATMENT
CELLULOSE
ENERGY EFFICIENCY
FILTERS
INDUSTRIAL WASTES
MATERIALS TESTING
POROSITY
WASTE PRODUCT UTILIZATION
WOOD PRODUCTS INDUSTRY
WOOD WASTES
CARBOHYDRATES
EFFICIENCY
HYDROGEN COMPOUNDS
INDUSTRY
LIQUID WASTES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
POLYSACCHARIDES
PRECIPITATION
SACCHARIDES
SEPARATION PROCESSES
SOLID WASTES
SULFUR COMPOUNDS
TESTING
WASTES
WATER
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)
320302 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Materials
320305 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management