The co-pyrolysis of biomass/sewage sludge was demonstrated to facilitate efficient resource utilization, harmless treatment, and sludge volume reduction. Due to the complexity of co-pyrolysis reactions, it was deemed essential that the thermodynamic properties and product distribution of this process be systematically evaluated. The pyrolysis characteristics, synergistic effects, and product distribution of municipal sludge-peanut shell mixtures were investigated using thermogravimetric analysis and a fixed-bed reactor. It was observed that significant synergistic interactions were exhibited during municipal sludge/peanut shell co-pyrolysis, primarily during the volatile release stage, where the synergistic effect was found to accelerate mixture pyrolysis. When the conversion rate (α) was below 0.7, the apparent activation energy was progressively reduced with increasing sludge mass ratio(SMR). Conversely, when α exceeded 0.7, the apparent activation energy sharply increased with higher SMR. The gas yield was enhanced with elevated pyrolysis temperatures, while liquid and solid yields were significantly diminished. Elevated temperatures were also shown to promote H2 and CH4 generation. Product yields and synergistic effects were strongly influenced by SMR, with the most pronounced co-pyrolysis synergy observed at an SMR of 40wt.%.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |