Adsorption of Pseudomonas putida on clay minerals and iron oxide.
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 degrees 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.
Jiang
D
D
State Key Laboratory of Agricultural Microbiology, Huazhong Agriculture University, Wuhan 430070, China.
Huang
Q
Q
Cai
P
P
Rong
X
X
Chen
W
W
D000327:Adsorption; D000538:Aluminum Silicates; D001426:Bacterial Proteins / Q000378:metabolism; D001546:Bentonite; D000077215:Clay; D005290:Ferric Compounds; D058085:Iron Compounds; D007616:Kaolin; D008903:Minerals; D016958:Pseudomonas putida / Q000378:metabolism
D000538:Aluminum Silicates; D001426:Bacterial Proteins; D005290:Ferric Compounds; D058085:Iron Compounds; D008903:Minerals; D001546:Bentonite; C094886:goethite; C000499:ferric oxide; D007616:Kaolin; D000077215:Clay