Kinetics results obtained by the modified Gompertz model.
| Experimental groups | Biogas | Methane | ||||||
|---|---|---|---|---|---|---|---|---|
| H m/mL g−1 VS | R m/mL g per VS per d | λ/d | R 2 | H m/mL g−1 VS | R m/mL g per VS per d | λ/d | R 2 | |
| CK | 182.09 | 17.42 | 3.23 | 0.998 | 89.85 | 6.81 | 5.61 | 0.998 |
| 0.5% Fe3O4/FA | 208.45 | 18.41 | 2.33 | 0.998 | 117.62 | 9.22 | 3.57 | 0.999 |
| 1% Fe3O4/FA | 191.35 | 18.02 | 3.11 | 0.998 | 102.23 | 9.14 | 4.72 | 0.999 |
| 2.5% Fe3O4/FA | 191.60 | 18.33 | 3.04 | 0.999 | 105.07 | 8.66 | 4.00 | 0.998 |