Research Article
Thermodynamic Studies of the Arsenic Adsorption on Iron Species Generated by Electrocoagulation
Table 7
FT-IR vibrations and their corresponding wavenumbers and region for the bands observed for the EC-by product.
| Electrode material | Type of vibrations | Vibration wavenumbers () | Vibration range () |
| Iron | OH stretching | 3738 | 3689–3787 | 3447 | 3550–3000 | Hydroxyl bending | 1637 | 1572–1813 | (OH) water bending | 1637 | 1572–1813 | Overtones of hydroxyl bending | 1637 | 1572–1813 | Magnetite ( or ) | 575 | 526–840 | Fe-O | 469 | 416–510 | Lepidocrocite | 1120 | 1090–1245 | 1023 | 923–1057 | 745 | 730–90 |
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