Table 2.
FTIR characteristics of a wheat straw.
| IR Peak | Before adsorption (Control) | Treatment with HCL | Treatment with NaOH | Treatment with Bacteria (PPSUHB3) | Assignment |
|---|---|---|---|---|---|
| 1 | 1061 | 1061 | 1061 | – | (Ph bend) Phosphines |
| 2 | – | – | – | 1172 | (C–N) Amine |
| 3 | – | – | 1590 | – | (N=O) Nitro |
| 4 | 1648 | 1655 | – | – | (C=C) Alkane |
| 5 | – | – | – | 1654 | (C=O) Carboxylic acid |
| 6 | – | – | – | – | (C–H) Alkene |
| 7 | – | – | – | 1727 | (C=O) Carboxylic acid |
| 8 | – | – | – | 2127 | (C=C) Alkyne |
| 9 | – | – | – | 2252 | (C=C) Alkyne |
| 10 | – | – | 2360 | – | (C≡N) Nitrile |
| 11 | – | – | – | 2554 | (O–H) Alcohol |
| 12 | 2899 | 2899 | 2917 | 2899 | (C–H) Alkane |
| 13 | – | 3334 | – | – | (N–H) Amine |
| 14 | 3436 | – | 3454 | (O–H) Alcohol |