CD ADSORPTION ONTO BACTERIAL SURFACES: A UNIVERSAL ADSORPTION EDGE?
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dc.contributor.author | Yee N. | |
dc.contributor.author | Fein J. | |
dc.date.accessioned | 2021-03-10T04:26:11Z | |
dc.date.available | 2021-03-10T04:26:11Z | |
dc.date.issued | 2001 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=731358 | |
dc.identifier.citation | Geochimica et Cosmochimica Acta, 2001, 65, 13, 2037-2042 | |
dc.identifier.issn | 0016-7037 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/26533 | |
dc.description.abstract | In this study, we measure the thermodynamic stability constants for proton and Cd binding onto the Gram-negative bacteria Escherichia coli and Pseudomonas aeruginosa, and the Gram-positive bacteria Bacillus megaturium, Streptococcus faecalis, Staphylococcus aureus, Sporosarcina ureae, and Bacillus cereus. Potentiometric titrations and Cd-bacteria adsorption experiments yield average values for the carboxyl site pKa, site concentration, and log stability constant for the bacterial surface Cd-carboxyl complex of 5.0, 2.0 x 10-3 mol/g and 4.0 respectively. Our results indicate that a wide range of bacterial species exhibit nearly identical Cd adsorption behavior as a function of pH. We propose that metal-bacteria adsorption is not dependent on the bacterial species involved, and we develop a generalized adsorption model which may greatly simplify the task of quantifying the effects of bacterial adsorption on dissolved mass transport in realistic geologic systems. | |
dc.title | CD ADSORPTION ONTO BACTERIAL SURFACES: A UNIVERSAL ADSORPTION EDGE? | |
dc.type | Статья |
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