Research Article
[Retracted] Treatment of Comprehensive Wastewater from Chemical and Pharmaceutical Parks by Fly Ash-Coated Iron Electrode Electrocoagulation
Table 2
Chemical composition of fly ash.
| Element | Variation range | Average value |
| Silica | 30–62 | 47.1 | Aluminum oxide | 17–38 | 22.8 | Ferric oxide | 1.2–17 | 7.01 | Calcium oxide | 0.6–19 | 2.81 | Magnesium oxide | 0.6–3.6 | 1.28 | Potassium oxide | 0.5–2.7 | 1.03 | Sodium oxide | 0.3–4.1 | 1.02 | Ignition loss | 0.8–32 | 7.99 |
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