Table 1. An overview of the platinum recovery efficiencies (%) at pH 2 is given; the Pt recovery was investigated with and without (sorption control) the addition of H2-gas.
The platinum recovery was studied using five different bacterial species and five Pt-complexes (n = 1). All recoveries were measured after 48 h, except for: * 68 h, ** 107 h and *** 168 h, and **** 320 h. The chemical reduction was studied for all Pt-species using H2-gas.
| Pt-species | Pt(II)Cl42- | Pt(IV)Cl62- | Pt(II)(NH3)4Cl2 | Cisplatin | Carboplatin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Culture | Sorption | H2 | Sorption | H2 | Sorption | H2 | Sorption | H2 | Sorption | H2 | |
| S. oneidensis | 25 | 99 | 8 | 99*** | 0 | 0 | 8 | 99 | 3 | 6 | |
| C. metallidurans | 24 | 99 | 8 | 99 | 0 | 0 | 3 | 99 | 1 | 3 | |
| G. metallireducens | 6* | 99 | 5 | 98** | - | ||||||
| B. toyonensis | 15 | 98 | 3 | 99**** | 0 | 0 | 0 | 5 | 7 | 1 | |
| P. stutzeri | 18 | 99 | 2 | 99 | 0 | 0 | 8 | 10 | 10 | 9 | |
| Chemical reduction | - | 99 | - | 0 | - | 0 | - | 99 | - | 0 | |