Table 1 FTIR analysis of bacterial exopolysaccharide, chitosan and chitosan/EPS composite before MB biosorption.
EPS | Chitosan | Chitosan/EPS composite | Assignment |
|---|---|---|---|
3430 | 3440.59 | 3440.96 | Stretching and shifting of OH and N-H bands |
2934.29 | 2920.61 | 2920.12 | C–H stretching |
- | 2854.92 | 2851.49 | |
1647.77 | 1639.45 | 1645.79 | C=O stretching vibration |
- | 1553.02 | - | Shifting of C=O group |
1455.09 | 1463.74 | - | C–H bending |
- | 1428.06 | 1424.34 | |
1362.64 | 1380.73 | 1383.58 | |
- | 1322.09 | 1322.06 | |
1269.15 | - | 1261.95 | C–N stretching |
- | 1159.54 | - | |
- | 1148.15 | - | |
1128.18 | 1111.74 | - | |
1068.85 | - | 1066.77 | |
1015.40 | - | - | |
926.75 | - | 927.02 | PO4−3 stretching |
878.38 | - | 902.29 |
