淡水生物膜上铅和镉解吸的动力学特征

Abstract

Abstract: Freshwater surface coatings were collected in Jingyuetan Lake, Jilin Province for the measurement of Pb and Cd released by the surface c oatings after adsorption. Double-constant rate equation and Elovich equation wer e employed as models to describe time-varying release of Pb and Cd adsorbed by t he surface coatings in laboratory. The results indicated that the rate of Cd rel ease by the surface coatings was greater than that of Pb with 10% of Pb and 60% of Cd released to solutions near equilibrium, respectively.

Key words: natural water, surface coatings, Pb and Cd, adsorption, release

CLC Number:

X132

LI Yu, DONG De-ming, HUA Xiu-yi, LIU Miao, ZHANG Jing-jing, YANG Fan. Characteristic of Kinetics of Pb and Cd Released by the Freshwater Surface Coatings[J].J4, 2002, 40(03): 313-315.

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Characteristic of Kinetics of Pb and Cd Released by the Freshwater Surface Coatings

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