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Concurrent sorption of Ni2+ and Cu2+ by Chlorella vulgaris from a binary metal solution
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mehta, Satish K. Gaur, J. P. |
| Copyright Year | 2000 |
| Abstract | Abstract. Kinetics and capacity of Ni2+ and Cu2+ sorption by Chlorella vulgaris were studied using single and binary metal solutions at various concentrations of these metal ions. The second-order rate law best described the kinetics of metal sorption from both single and binary metal systems. C. vulgaris preferentially sorbed Cu2+ over Ni2+ in the binary system. In comparison to the single metal system, the amounts of Ni2+ and Cu2+ sorbed at equilibrium (qe) were respectively 73% and 25%, and the initial rate of sorption (h) was ca. 50% in the case of the binary metal system. The test metals inhibited sorption of each other, thereby indicating competition between Ni2+ and Cu2+for sorption onto non-specific binding sites. The present study showed that C. vulgaris has specific as well as non-specific sites for the binding of Ni2+ and Cu2+. Participation of these sites for sorption depended on the ratio of Ni2+ and Cu2+ in solution. The maximum metal sorption capacity of C. vulgaris was 6.75 mmol g–1 from the binary metal solution at the tested biomass concentration (100 mg dry weight l–1). Total metal sorption was enhanced with increasing total concentration of both the metals up to 1.6 mM, beyond which a decrease occurred. Two-dimensional contour plots were successfully used for the first time for the evaluation of metal sorption potential. |
| Starting Page | 379 |
| Ending Page | 382 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s002530000505 |
| PubMed reference number | 11341323 |
| Journal | Medline |
| Volume Number | 55 |
| Alternate Webpage(s) | https://page-one.springer.com/pdf/preview/10.1007/s002530000505 |
| Alternate Webpage(s) | https://doi.org/10.1007/s002530000505 |
| Journal | Applied Microbiology and Biotechnology |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
