Carbonate precipitation for heavy metals pollutants
A study was conducted to determine the hydroxide solubility for zinc, nickel, cadmium, and lead over a range of approximately pH 6 to 13; the determination of carbonate solubility for the same heavy metals over the same pH range, at selected carbonate concentrations; and a comparison of the residual soluble metal in the hydroxide system with that in the carbonate system. Based on the results of the study, hydroxide solubility can be predicted for cadmium and lead from published solubility constant values, and for zinc and nickel based upon experimental determined values presented. Also, solubility cannot be predicted based on equilibrium conditions for the carbonate system and that the kinetics of precipitation appear such for zinc and nickel that the carbonate form of these metals will not form within typical treatment plant detention times.
- Research Organization:
- Illinois Inst. of Tech., Chicago
- OSTI ID:
- 5170276
- Journal Information:
- J. Water Pollut. Control Fed.; (United States), Journal Name: J. Water Pollut. Control Fed.; (United States) Vol. 49:12; ISSN JWPFA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
420900* -- Engineering-- Waste Processing Plants & Equipment-- (-1989)
CADMIUM
CARBON COMPOUNDS
CARBONATES
ELEMENTS
EQUILIBRIUM
HYDROGEN COMPOUNDS
HYDROXIDES
KINETICS
LEAD
LIQUID WASTES
MANAGEMENT
METALS
NICKEL
OXYGEN COMPOUNDS
PH VALUE
PRECIPITATION
PROCESSING
REACTION KINETICS
SEPARATION PROCESSES
SOLUBILITY
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE WATER
WASTES
WATER
ZINC