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Biosorption of heavy metals by bacillus thuringiensis strain OSM29 originating from industrial effluent contaminated north indian soil
Joint Authors
Oves, Muhammad
Khan, Saghir Muhammad
Almas, Zaydi
Source
Saudi Journal of Biological Sciences
Issue
Vol. 20, Issue 2 (30 Apr. 2013), pp.121-129, 9 p.
Publisher
Publication Date
2013-04-30
Country of Publication
Saudi Arabia
No. of Pages
9
Main Subjects
Topics
Abstract EN
-The study was navigated to examine the metal biosorbing ability of bacterial strain OSM29 recovered from rhizosphere of cauliflower grown in soil irrigated consistently with industrial effluents.
The metal tolerant bacterial strain OSM29 was identified as Bacillus thuringiensis following 16S rRNA gene sequence analysis.
In the presence of the varying concentrations (25– 150 mgl1) of heavy metals, such as cadmium, chromium, copper, lead and nickel, the B.
thuringiensis strain OSM29 showed an obvious metal removing potential.
The effect of certain physicochemical factors such as pH, initial metal concentration, and contact time on biosorption was also assessed.
The optimum pH for nickel and chromium removal was 7, while for cadmium, copper and lead, it was 6.
The optimal contact time was 30 min.
for each metal at 32 ± 2 C by strain OSM29.
The biosorption capacity of the strain OSM29 for the metallic ions was highest for Ni (94%) which was followed by Cu (91.8%), while the lowest sorption by bacterial biomass was recorded for Cd (87%) at 25 mgl1 initial metal ion concentration.
The regression coefficients obtained for heavy metals from the Freundlich and Langmuir models were significant.
The surface chemical functional groups of B.
thuringiensis biomass identified by Fourier transform infrared (FTIR) were amino, carboxyl, hydroxyl, and carbonyl groups, which may be involved in the biosorption of heavy metals.
The biosorption ability of B.
thuringiensis OSM29 varied with metals and was pH and metal concentration dependent.
The biosorption of each metal was fairly rapid which could be an advantage for large scale treatment of contaminated sites.
American Psychological Association (APA)
Oves, Muhammad& Khan, Saghir Muhammad& Almas, Zaydi. 2013. Biosorption of heavy metals by bacillus thuringiensis strain OSM29 originating from industrial effluent contaminated north indian soil. Saudi Journal of Biological Sciences،Vol. 20, no. 2, pp.121-129.
https://search.emarefa.net/detail/BIM-357761
Modern Language Association (MLA)
Oves, Muhammad…[et al.]. Biosorption of heavy metals by bacillus thuringiensis strain OSM29 originating from industrial effluent contaminated north indian soil. Saudi Journal of Biological Sciences Vol. 20, no. 2 (Apr. 2013), pp.121-129.
https://search.emarefa.net/detail/BIM-357761
American Medical Association (AMA)
Oves, Muhammad& Khan, Saghir Muhammad& Almas, Zaydi. Biosorption of heavy metals by bacillus thuringiensis strain OSM29 originating from industrial effluent contaminated north indian soil. Saudi Journal of Biological Sciences. 2013. Vol. 20, no. 2, pp.121-129.
https://search.emarefa.net/detail/BIM-357761
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 128-129
Record ID
BIM-357761