The effect of temperature and pH on the adsorption of copper (II), lead (II), and zinc (II) onto goethite

Journal Article · Mon Nov 01 04:00:00 EST 1993 · Journal of Colloid and Interface Science; (United States)

DOI:https://doi.org/10.1006/jcis.1993.1440· OSTI ID:5700561

Rodda, D P; Johnson, B B; Wells, J D ^[1]

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1. La Trobe Univ. College of Northern Victoria, Bendigo (Australia)

Adsorption of copper(II), lead(II), and zinc(II) from aqueous solution (initially 10[sup [minus]4] or 10[sup [minus]5] M) onto synthetic goethite ([alpha]FeOOH) has been measured as a function of pH at several temperatures between 10 and 70 C. In all systems the adsorption edges shifted to lower pH as the temperature increased. The order of temperature dependence was found to be Zn > Cu [approx] Pb; this is shown to be consistent with the hypothesis that adsorption is closely related to cation hydrolysis. The James-Healy model for adsorption of hydrolyzed species, with the use of a single adjustable parameter, [Delta]G[sub chem], for each cation, correctly predicted both the direction and magnitude of the temperature dependence of the pH range for adsorption, but failed to account for its concentration dependence.

• OSTI ID: 5700561
• Journal Information: Journal of Colloid and Interface Science; (United States), Journal Name: Journal of Colloid and Interface Science; (United States) Vol. 161:1; ISSN 0021-9797; ISSN JCISA5
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540210* -- Environment
Terrestrial-- Basic Studies-- (1990-)
ADSORPTION
AQUEOUS SOLUTIONS
CONCENTRATION RATIO
COPPER
DISPERSIONS
ELEMENTS
HYDROGEN COMPOUNDS
HYDROXIDES
IRON COMPOUNDS
IRON HYDROXIDES
LEAD
MATHEMATICAL MODELS
METALS
MIXTURES
OXYGEN COMPOUNDS
PH VALUE
SOLUTIONS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
ZINC