Equilibrium sorption of Cr6+ by a consortia of denitrifying bacteria
| Autor: | Thomas M. Brouns, Lin Guan, James N. Petersen, Donald L. Johnstone, David R. Yonge |
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| Rok vydání: | 1993 |
| Předmět: |
Langmuir
Chemistry Metal ions in aqueous solution Fractional factorial design Langmuir adsorption model Bioengineering Sorption General Medicine Applied Microbiology and Biotechnology symbols.namesake Denitrifying bacteria Adsorption Environmental chemistry symbols Steady state (chemistry) Biotechnology |
| Zdroj: | Biotechnology Letters. 15:727-732 |
| ISSN: | 1573-6776 0141-5492 |
| DOI: | 10.1007/bf01080146 |
| Popis: | The accumulation of metal ions on to biological materials is a promising method for removing these toxic materials from waste or ground-waters. A fractional factorial statistical experimental design was used to ascertain which experimental parameters affect the sorption of Cr6+ by a consortium of denitrifying bacteria using a minimum number of experiments. Analysis of this set of experiments found that the steady state sorption behavior could be described by Langmuir isotherms. Observed variations in the isotherm parameters were due to the imposed changes in the experimental variables. In particular, solution pH and the state of the biomass were found to have the greatest influence upon the amount of chromium that was taken up, while other factors had less significance, but were still important. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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