TABLE 4.
Fourier transform infrared spectroscopy (FTIR) spectral analysis for P. alcaliphila NEWG-2 before and after biosorption of Co (II) ions.
|
Pseudomonas alcaliphila (Control) |
Pseudomonas alcaliphila + Cobalt |
||
| Wave no. (cm–1) | Functional groups | Wave no. (cm–1) | Functional groups |
| 3,427 | Strong, broad O-H stretching | 3,445, 3,423 | Strong, broad O-H stretching |
| 2,959 | Strong, broad N-H stretching | 2,962 | Strong, broad N-H stretching |
| 2,923 | Medium C-H stretching | 2,924 | Medium C-H stretching |
| 2,852 | Medium C-H stretching, aldehyde | 2,853 | Medium C-H stretching, aldehyde |
| 1,637 | Strong C = O stretching, amide | 1,638 | Strong C = O stretching, amide |
| 1,561 | Medium C = C stretching | 1,561 | Medium C = C stretching |
| 1,415 | Strong S = O stretching | 1,414 | Strong S = O stretching |
| 1,347 | Medium C-H bending | 1,347 | Medium C-H bending |
| 1,162 | Strong C-O stretching | 1,160 | Strong C-O stretching |
| 1,112 | Strong C-O stretching, secondary alcohol | 1,109 | Strong C-O stretching, secondary alcohol |
| 1,056 | Strong C-O stretching, primary alcohol | 1,052 | Strong C-O stretching, primary alcohol |
| 1,024 | Strong S = O or Si-O-Si stretching | 1,023 | Strong S = O or Si-O-Si stretching |
| 979 | Strong C-H bending, 1,2-disubstituted | ||
| 799, 772 | Strong C-H bending, 1,2,3-trisubstituted | 797 | Strong C-H bending, 1,2,3-trisubstituted |
| 716 | Strong C-H bending, monosubstituted | 772, 712 | Strong C-H bending, monosubstituted |
| 687 | Symmetric NH2 bending | ||
| 646, 586 | Strong C-X stretching or aromatic ring | 646, 586 | Strong C-X stretching or aromatic ring |
| 530 | Strong L-X stretching | 562, 530 | Strong L-Co stretching |