Adsorption of copper onto goethite in aqueous systems

Journal Article · · Environmental Geology and Water Sciences; (United States)

DOI:https://doi.org/10.1007/BF01706163· OSTI ID:6834470

Kooner, Z S ^[1]

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1. Oak Ridge National Lab., TN (United States)

The adsorption of copper(II) onto goethite was studied as a function of pH, total dissolved copper concentration, surface area of goethite, and ionic strength. The adsorption of copper was similar to that of other hydrolyzable metals. A tenfold increase in goethite surface area had a significant effect on the adsorption edge, but a tenfold increase in the ionic strength of the medium did not effect the adsorption edge. The distribution coefficients increase sharply with increase in pH and ranged from 10 to 60,000 ml/g over a range of two and half pH units, depending on the goethite surface area and copper concentration. A tenfold decrease in ionic strength as well as a tenfold increase in surface area of goethite did not have any effect on the magnitude of distribution coefficients. Distribution coefficients were used to calculate the number of protons released per mole of copper adsorbed during the adsorption process. The average number of protons released per mole of copper adsorbed was estimated to be 1.40 [+-] 0.10.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6834470
• Journal Information: Environmental Geology and Water Sciences; (United States), Journal Name: Environmental Geology and Water Sciences; (United States) Vol. 20:3; ISSN EGWSEI; ISSN 0177-5146
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
ADSORPTION
AQUEOUS SOLUTIONS
CHALCOGENIDES
CHEMICAL REACTIONS
COPPER
DECOMPOSITION
DISPERSIONS
ELEMENTS
ENVIRONMENTAL TRANSPORT
GOETHITE
HAZARDOUS MATERIALS
HYDROLYSIS
IRON COMPOUNDS
IRON OXIDES
LYSIS
MASS TRANSFER
MATERIALS
METALS
MINERALS
MIXTURES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PH VALUE
POLLUTANTS
SOLUTIONS
SOLVOLYSIS
SORPTION
SORPTIVE PROPERTIES
SURFACE AREA
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS