Use of coal ash for intensifying the purification of wastewater from electroplating plants

Journal Article · Mon Oct 10 00:00:00 EDT 1988 · J. Appl. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:6339467

Svechina, N N; Gudzyuk, V L; Pikunova, E A

The authors investigated the possibility of intensifying the process of the settling and consolidation of the sediment and of increasing the degree and reliability of the purification of electroplating wastewater with the use of additions of the ash of mineral coals. The realization of a coprecipitation effect, as well as the coagulation and sorption properties of coal ash when it is employed as an additional provides for the intensification of the processes involved in the purification of waste water electroplating plants. The use of ash as an additive increases the degree of removal of ions of heavy metals from wastewater by increasing the rate of formation and precipitation of flakes of metal hydroxides, by lowering the concentration of the dissolved part of the admixtures of the metals, and by preventing their breakthrough into the clarified water. The spectral analysis of the structural changes in the sediments and the intermolecular interactions occurring when an addition of ash is used characterizes the redistribution of the forms in which oxygen and hydrogen is bound and attests to the occurrence of irreversible chemisorption processes on the surface of the ash and the structuring of the sediment, which facilitates the conditions for its subsequent treatment.

• Research Organization: Ivanovo Structural-Engineering Institute (USSR)
• OSTI ID: 6339467
• Journal Information: J. Appl. Chem. USSR (Engl. Transl.); (United States), Vol. 61:4; Other Information: Translated from Zh. Prikl. Khim.; 61: No. 4, 869-873(Apr 1988)
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
54 ENVIRONMENTAL SCIENCES
ASHES
SORPTIVE PROPERTIES
ELECTROPLATING
WASTE PROCESSING
WASTE WATER
DEMETALLIZATION
WATER TREATMENT
WASTE PRODUCT UTILIZATION
ABSORPTION SPECTRA
ADSORPTION
CHEMISORPTION
CHROMIUM COMPOUNDS
COAL
COPRECIPITATION
FLOCCULATION
HYDROXIDES
INFRARED SPECTRA
ION EXCHANGE
NICKEL COMPOUNDS
PH VALUE
SEDIMENTATION
ZINC COMPOUNDS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DEPOSITION
ELECTRODEPOSITION
ELECTROLYSIS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
LIQUID WASTES
LYSIS
MANAGEMENT
MATERIALS
OXYGEN COMPOUNDS
PLATING
PRECIPITATION
PROCESSING
RESIDUES
SEPARATION PROCESSES
SORPTION
SPECTRA
SURFACE COATING
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
WASTE MANAGEMENT
WASTES
WATER
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management
520200 - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)