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Adsorption of Pseudomonas putida on clay minerals and iron oxide |
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| Authors: | Jiang D Huang Q Cai P Rong X Chen W |
| Affiliation: | aState Key Laboratory of Agricultural Microbiology, Huazhong Agriculture University, Wuhan 430070, China bKey Laboratory of Subtropical Agricultural Resources and Environment, Ministry of Agriculture, Huazhong Agriculture University, Wuhan 430070, China cCollege of Agriculture, Guangxi University, Nannin 530005, China |
| Abstract: | Adsorption of Pseudomonas putida on minerals including montmorillonite, kaolinite and goethite was studied. The adsorption isotherms of P. putida on the examined minerals conformed to the Langmuir equation. The amount of P. putida adsorbed followed the order: goethite > kaolinite > montmorillonite. A greater extent of P. putida adsorption on minerals was observed in the range of temperature from 15 to 35 °C. The adsorption of P. putida on minerals decreased with the increase of pH from 3.0 to 10.0. Magnesium ion was more efficient than sodium ion in promoting P. putida adsorption on minerals. The results suggest that electrostatic interactions play a vital role in P. putida adsorption by soil colloidal factions. The information obtained in this study is of fundamental significance for the understanding of the survival and transport of bacteria in soil systems. |
| Keywords: | Adsorption P. putida Bacteria Montmorillonite Kaolinite Goethite |
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