Separation of mercury from aqueous mercuric chloride solutions by onion skins
Journal Article
·
· Sep. Sci. Technol.; (United States)
The separation of mercury from aqueous HgCl/sub 2/ solutions by onion skins (outermost coat) was studied both experimentally and theoretically. The distribution equilibria were measured by the batchwise method. The experimental results revealed that onion skin is a useful material for separating mercury from aqueous systems. The distribution data obtained at 25/sup 0/C were analyzed by using the theory based on the law of mass action. The separation of dissolved mercury by onion skins was found to be a process accompanied by an ion-exchange reaction of the cationic complex HgCl/sup +/ and an adsorption of the neutral complex HgCl/sub 2/. The equilibrium constants of the ion-exchange and adsorption processes at 25/sup 0/C and the mercury-binding capacity of onion skins were determined. Further, it was found that the distribution equilibrium of mercury is comparatively insensitive to temperature.
- Research Organization:
- Univ. of Osaka Prefecture, Japan
- OSTI ID:
- 6809089
- Journal Information:
- Sep. Sci. Technol.; (United States), Journal Name: Sep. Sci. Technol.; (United States) Vol. 21:8; ISSN SSTED
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ADSORPTION
AQUEOUS SOLUTIONS
CATIONS
CHARGED PARTICLES
CHLORIDES
CHLORINE COMPOUNDS
DATA
DISPERSIONS
ELEMENTS
EXPERIMENTAL DATA
FOOD
HALIDES
HALOGEN COMPOUNDS
INFORMATION
ION EXCHANGE
IONS
MEDIUM TEMPERATURE
MERCURY
MERCURY CHLORIDES
MERCURY COMPOUNDS
MERCURY HALIDES
METALS
MIXTURES
NUMERICAL DATA
ONIONS
PLANTS
SOLUTIONS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
VEGETABLES
400105* -- Separation Procedures
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ADSORPTION
AQUEOUS SOLUTIONS
CATIONS
CHARGED PARTICLES
CHLORIDES
CHLORINE COMPOUNDS
DATA
DISPERSIONS
ELEMENTS
EXPERIMENTAL DATA
FOOD
HALIDES
HALOGEN COMPOUNDS
INFORMATION
ION EXCHANGE
IONS
MEDIUM TEMPERATURE
MERCURY
MERCURY CHLORIDES
MERCURY COMPOUNDS
MERCURY HALIDES
METALS
MIXTURES
NUMERICAL DATA
ONIONS
PLANTS
SOLUTIONS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
VEGETABLES