Nickel biosorption by Acinetobacter baumannii and Pseudomonas aeruginosa isolated from industrial wastewater

Brazilian Journal of Microbiology

Carlos E. Rodríguez²  Adolfo Quesada¹ 

[1] ,Universidad de Costa Rica Facultad de Microbiología Centro de Investigación en Enfermedades Tropicales

关键词: biosorption;    nickel;    Acinetobacter baumannii;    Pseudomonas aeruginosa;    wastewater treatment;    bioadsorção;    niquel;    Acinetobacter baumannii;    Pseudomonas aeruginosa;    tratamento de águas residuais;   

DOI  :  10.1590/S1517-83822006000400012

来源: SciELO

【 摘 要 】

Nickel biosorption ability was evaluated in two bacterial strains: Acinetobacter baumannii UCR-2971 and Pseudomonas aeruginosa UCR-2957, resulting in greatest adsorption at pH 4.5 and a residence time of 100 minutes. Biosorption isotherms showed that the process follows the Langmuir model. The maximum adsorption rates (Nmax) were 8.8 and 5.7 mg·g-1 for A. baumannii and P. aeruginosa, respectively; however, affinity constants suggest that P. aeruginosa (K=1.28) has higher affinity for nickel than A. baumannii (K=0.68). It is suggested that both strains could be used for wastewater treatment, as long as the concentration of Ni2+ is within the range of mg·L-1.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License