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Non-isothermal co-combustion of sludge and coal: Thermal behavior, kinetics and functional group structural analysis

Author

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  • Chen, Yanghua
  • Li, Dequan
  • Tian, Yuan
  • Shi, Jinming
  • Wen, Da
  • Zhang, Ying
  • Zhang, Siqi

Abstract

This research employed Thermogravimetric analysis (TGA) to investigate the combustion characteristics of municipal sludge and pharmaceutical sludge when co-combustion with coal. Fourier transform infrared (FTIR) spectroscopy was used to study changes in surface functional groups. The results indicated that when the blending ratio of the two types of sludge reached 10 %, the comprehensive combustion indices decreased by 15.65 % and 26.42 % compared to coal, respectively. Using three model-free methods to calculate activation energy revealed that the activation energy for the initial reaction phase decreased when the blending ratio was ≤10 %. However, when the blending ratio ≥30 %, it had a significantly adverse effect on combustion. The sludge promoted the decomposition of coal in the initial reaction but strongly inhibited the release of volatile matter and the combustion of fixed carbon. Overall, the negative impact of pharmaceutical sludge on coal combustion was greater than that of municipal sludge. The thermal stability of different samples is related to the content of various functional groups. In the later stages of the reaction, the addition of sludge will inhibit the release of aromatic compounds from the coal, which can help explain the changes in thermal behavior during the co-combustion process.

Suggested Citation

  • Chen, Yanghua & Li, Dequan & Tian, Yuan & Shi, Jinming & Wen, Da & Zhang, Ying & Zhang, Siqi, 2025. "Non-isothermal co-combustion of sludge and coal: Thermal behavior, kinetics and functional group structural analysis," Energy, Elsevier, vol. 324(C).
    • Handle: RePEc:eee:energy:v:324:y:2025:i:c:s0360544225016196
    DOI: 10.1016/j.energy.2025.135977
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    References listed on IDEAS

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    1. Sever Akdağ, Ayşe & Atak, Onur & Atimtay, Aysel T. & Sanin, Faika Dilek, 2018. "Co-combustion of sewage sludge from different treatment processes and a lignite coal in a laboratory scale combustor," Energy, Elsevier, vol. 158(C), pages 417-426.
    2. Ni, Zhanshi & Zhang, Yaokun & Liu, Xiang & Shi, Hao & Yao, Yurou & Tian, Junjian & Hu, Peng & He, Liqun & Lin, Qizhao & Liu, Lvdan, 2024. "Co-combustion of sewage sludge with corn stalk based on TG-MS and TG-DSC: Gas products, interaction mechanisms, and kinetic behavior," Energy, Elsevier, vol. 308(C).
    3. Ni, Zhanshi & Liu, Xiang & Shi, Hao & Tian, Junjian & Yao, Yurou & Hu, Peng & He, Liqun & Meng, Kesheng & Lin, Qizhao, 2024. "Interaction mechanism and pollutant emission characteristics of sewage sludge and corncob co-combustion," Renewable Energy, Elsevier, vol. 231(C).
    4. Wen, Shaoting & Yan, Youping & Liu, Jingyong & Buyukada, Musa & Evrendilek, Fatih, 2019. "Pyrolysis performance, kinetic, thermodynamic, product and joint optimization analyses of incense sticks in N2 and CO2 atmospheres," Renewable Energy, Elsevier, vol. 141(C), pages 814-827.
    5. Zhao, Zhenghui & Wang, Ruikun & Wu, Junhong & Yin, Qianqian & Wang, Chunbo, 2019. "Bottom ash characteristics and pollutant emission during the co-combustion of pulverized coal with high mass-percentage sewage sludge," Energy, Elsevier, vol. 171(C), pages 809-818.
    6. Liu, Xiang & Bi, Haobo & Tian, Junjian & Ni, Zhanshi & Shi, Hao & Yao, Yurou & Meng, Kesheng & Wang, Jian & Lin, Qizhao, 2024. "Thermogravimetric analysis of co-combustion characteristics of sewage sludge and bamboo scraps combined with artificial neural networks," Renewable Energy, Elsevier, vol. 226(C).
    7. Xu, Tong & Wang, Chunbo & Hong, Dikun & Li, Song & Yue, Shuang, 2023. "The synergistic effect during co-combustion of municipal sludge and coal: Experimental and ReaxFF molecular dynamic study," Energy, Elsevier, vol. 262(PB).
    8. Sam Fankhauser & Stephen M. Smith & Myles Allen & Kaya Axelsson & Thomas Hale & Cameron Hepburn & J. Michael Kendall & Radhika Khosla & Javier Lezaun & Eli Mitchell-Larson & Michael Obersteiner & Lava, 2022. "The meaning of net zero and how to get it right," Nature Climate Change, Nature, vol. 12(1), pages 15-21, January.
    9. Li, Xiaomin & Chen, Xi & Zhang, Chuxuan & Peng, Zhengkang & Gong, Xun, 2024. "PM10 emissions from co-combustion of water washed sea rice waste with coal," Applied Energy, Elsevier, vol. 356(C).
    10. Li, Xiangguo & Li, Shuguo & Lv, Yang & Jiang, Wenguang & He, Chenhao & Hou, Shengju & Ma, Weinan & Dan, Jianming, 2024. "Study on thermal behavior and gas pollutant emission control during the co-combustion of rice straw-modified oily sludge and coal," Renewable Energy, Elsevier, vol. 230(C).
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