Research Article
Assessment of Novel Synthetized Nanozirconium Tungstovanadate as Cation Exchanger for Lead Ion Decontamination
Table 4
Effect of temperature on the ion exchange capacity of Zr(IV) tungstovanadate on heating time for 1 h.
| Heating temperature (°C) | Appearance | IEC for Na+ ion (mequiv.g−1) | % loss in IEC |
| 50 | Yellow | 2.5 | 0 | 100 | Yellow | 2.45 | 2 | 200 | Yellow | 2.39 | 4.4 | 400 | Yellow | 2.25 | 10 | 500 | Dark yellow | 2.15 | 16 | 600 | Dark yellow | 1.8 | 28 | 700 | Greenish yellow | 1.6 | 36 |
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