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Investigation of synergistic pyrolysis effects and product distribution from Co-Pyrolysis of municipal sludge and peanut shells
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Shi-peng GUO1, Yun-gang WANG1, *, Yan-yuan BAI1, Hao-ran XIU1, Li ZOU1, Fei-xiang LI2, Qin-xin ZHAO1
China Environmental Science | 2025, 45(4) : 2016 - 2027
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China Environmental Science | 2025, 45(4): 2016-2027
Solid Waste
Investigation of synergistic pyrolysis effects and product distribution from Co-Pyrolysis of municipal sludge and peanut shells
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Shi-peng GUO1, Yun-gang WANG1, *, Yan-yuan BAI1, Hao-ran XIU1, Li ZOU1, Fei-xiang LI2, Qin-xin ZHAO1
Affiliations
  • 1.Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an Jiaotong University, Xi’an 710049, China
  • 2.Hubei Special Equipment Inspection and Testing Institute, Wuhan 430077, China
Published: 2025-04-20
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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.%.

biomass  /  pyrolysis  /  thermodynamics  /  municipal sludge  /  synergistic effect  /  pyrolysis products
Shi-peng GUO, Yun-gang WANG, Yan-yuan BAI, Hao-ran XIU, Li ZOU, Fei-xiang LI, Qin-xin ZHAO. Investigation of synergistic pyrolysis effects and product distribution from Co-Pyrolysis of municipal sludge and peanut shells[J]. China Environmental Science, 2025 , 45 (4) : 2016 -2027 .
Year 2025 volume 45 Issue 4
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  • Receive Date:2024-09-09
  • Online Date:2026-03-19
  • Published:2025-04-20
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  • Received:2024-09-09
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Affiliations
    1.Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an Jiaotong University, Xi’an 710049, China
    2.Hubei Special Equipment Inspection and Testing Institute, Wuhan 430077, China
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

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
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