Biosorption of lead and nickel by living and non-living cells of Pseudomonas aeruginosa ASU 6a

R. M. Gabr, S. H.A. Hassan, A. A.M. Shoreit*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

180 Citations (Scopus)

Abstract

The optimum conditions for biosorption and bioaccumulation of lead and nickel were investigated by using a tolerant bacterial strain isolated from El-Malah canal, Assiut, Egypt, and identified as Pseudomonas aeruginosa ASU 6a. The experimental adsorption data were fitted towards the models postulated by Langmuir and Freundlich isotherm equations. The binding capacity by living cells is significantly lower than that of dead cells. The maximum biosorption capacities for lead and nickel obtained by using non-living cells and living cells were 123, 113.6 and 79, 70 mg/g, respectively. The biosorptive mechanism was confirmed by IR analysis and from the identification nature of acidic and basic sites. Moreover, the postulated mechanism was found to depend mainly on ionic interaction and complex formation.

Original languageEnglish
Pages (from-to)195-203
Number of pages9
JournalInternational Biodeterioration and Biodegradation
Volume62
Issue number2
DOIs
Publication statusPublished - Sep 2008
Externally publishedYes

Keywords

  • Biosorption
  • Freundlich isotherm
  • Heavy metals
  • Langmuir
  • Pseudomonas aeruginosa

ASJC Scopus subject areas

  • Microbiology
  • Biomaterials
  • Waste Management and Disposal

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