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Characterization techniques used for hydrogel adsorbent and information obtained from the characterization tools.
| Characterization Techniques | Characteristics |
|---|---|
| Fourier Transform Infrared Spectroscopy (FTIR) | Functional group |
| Field Emission-Scanning Electron Microscopy (FE-SEM) | Surface morphology |
| Thermo Gravimetric Analysis (TGA) | Thermal stability |
| Zeta Sizer | Surface charge |
| Energy Dispersive X-ray (EDX) | Elemental composition |
