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

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 postulate...

Full description

Saved in:
Bibliographic Details
Published inInternational biodeterioration & biodegradation Vol. 62; no. 2; pp. 195 - 203
Main Authors Gabr, R.M., Hassan, S.H.A., Shoreit, A.A.M.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.09.2008
Subjects
Biosorption
Freundlich isotherm
Heavy metals
Langmuir
Pseudomonas aeruginosa
Egypt, Arab Rep
Pseudomonas aeruginosa
Biosorption
Langmuir
Heavy metals
Freundlich isotherm
Online AccessGet full text

Cover

More Information
Summary: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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ObjectType-Article-2
ObjectType-Feature-1
ISSN:0964-8305
1879-0208
DOI:10.1016/j.ibiod.2008.01.008