Journal of Microbiology and Biotechnology
- 제8권1호
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- Pages.53-60
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- 1998
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- 1017-7825(pISSN)
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- 1738-8872(eISSN)
Evaluation of Metal Biosorption Efficiency of Laboratory-grown Microcystis under Various Environmental Conditions
- Pradhan, Subhashree (Department of Botany, Banaras Hindu University) ;
- Singh, Sarita (Department of Botany, Banaras Hindu University) ;
- Rai, Lal Chand (Department of Botany, Banaras Hindu University) ;
- Parker, Dorothy L. (Department of Biology and Microbiology, University of Wisconsin)
- 발행 : 1998.02.01
초록
This study examines the effect of pH, temperature, metal ion concentration and culture density on metal biosorption by the nuisance cyanobacterium Microcystis aeruginosa. Ni biosorption was higher at pH 9.2 than at neutral and acidic pH. In contrast the biosorption of Cu and Zn was maximum at pH 7.0. However, biosorption of Zn was difficult to measure at pH values 9.2 and 10.5, owing to the formation of insoluble complexes. All the test metals (Cu, Zn, and Ni) showed maximum biosorption rate at low culture densities of 40 mg dry wt