Figure 1
Removal of A. baumannii from slightly acidic terra rossa (pH 5.40) supplemented with 1 wt% of natural zeolitised tuff (NZ) or 1 wt% of Cu-loaded NZ (CuNZ), or 1 or 0.1 wt% of Ag-loaded NZ (AgNZ). Bacterial counts represent averages of triplicate counts ± standard deviation. The detection limit was 1 CFU/g
Figure 2
Removal of A. baumannii from slightly alkaline red palaeosol (pH 8.43) supplemented with 1 wt% of natural zeolitised tuff (NZ) or 1 wt% of Cu-loaded NZ (CuNZ), or 1 or 0.1 wt% of Ag-loaded NZ (AgNZ). Bacterial counts represent averages of triplicate counts ± standard deviation. The detection limit was 1 CFU/g
Table 1
Native soil heterotrophic bacterial isolates determined with MALDI-TOF MS in fresh red palaeosol before and at the end of treatment with 1 wt% of NZ or CuNZ or AgNZ
| Isolate | Fresh soil | NZ | CuNZ | AgNZ |
|---|---|---|---|---|
| Arthrobacter sp. | 6 | 1 | 1 | |
| Arthrobacter oxydans | 4 | 1 | ||
| Arthrobacter scleromae | 1 | |||
| Arthrobacter polychromogenes | 1 | |||
| *Bacillus sp. | 2 | 6 | ||
| *Bacillus cereus | 2 | |||
| *Bacillus megaterium | 1 | |||
| *Bacillus thuringiensis | 1 | |||
| *Brevibacillus sp. | 1 | |||
| Burkholderia sp. | 1 | |||
| Burkholderia caledonica | 1 | |||
| *Paenibacillus sp. | 2 | 2 | ||
| Pseudomonas sp. | 1 | |||
| *Streptomyces sp. | 2 | |||
| *Streptomyces chartreusis | 1 | 1 | ||
| Variovorax sp. | 1 |