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Yield and elementary analysis of EHL, carbon spheres (CSs) and activated carbon spheres (ACSs).
| Samples | Yield (%) | C (%) | O (%) | N (%) | H (%) |
|---|---|---|---|---|---|
| EHL-raw | — | 77.5 | 20.6 | 0.25 | 1.65 |
| Hydrothermal Carbonization (CSs) | 65.2 | 88.1 | 10.4 | 0.2 | 1.5 |
| After microwave heating (ACSs) | 57.5 | 95.2 | 3.5 | 0.1 | 1.2 |
