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Energy recovery from high-ash municipal sewage sludge by hydrothermal carbonization: Fuel characteristics of biosolid products

Author

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  • Wang, Ruikun
  • Wang, Chunbo
  • Zhao, Zhenghui
  • Jia, Jiandong
  • Jin, Qingzhuang

Abstract

Hydrothermal carbonization (HTC) is a promising approach for the fuel upgrading of moist biomass wastes. However, its effects on high-ash municipal sewage sludge (HA-MSS), which is produced largely in China, are unclear. In this study, HA-MSS was treated at various temperatures from 170 °C to 350 °C. The fuel characteristics of hydrochar products, namely, chemical compositions; heat value; water-holding capacity; mineral components; and chemical bonding forms of carbon, nitrogen, and sulfur, were comprehensively discussed. Low-temperature HTC below 260 °C decreased the amounts but only slightly changed the species of mineral components in HA-MSS. However, temperatures exceeding 290 °C removed some alkali and alkaline earth minerals completely and formed a new species, namely, anorthite (CaAl2Si2O8). In terms of fuel characteristics, 230 °C was determined to be the optimal temperature for the HTC of HA-MSS. At this temperature, the HA-MSS was upgraded to a hydrochar with a large higher heating value and good dewaterability. When the hydrochars were combusted, SO2 and NOx were mainly released during the devolatilization stage of fragile volatiles. With the increase in HTC temperature, the releasing peak of SO2 decreased. However, for hydrochars obtained at HTC temperatures lower than 260 °C, the releasing peaks of NOx showed only a small difference.

Suggested Citation

  • Wang, Ruikun & Wang, Chunbo & Zhao, Zhenghui & Jia, Jiandong & Jin, Qingzhuang, 2019. "Energy recovery from high-ash municipal sewage sludge by hydrothermal carbonization: Fuel characteristics of biosolid products," Energy, Elsevier, vol. 186(C).
    • Handle: RePEc:eee:energy:v:186:y:2019:i:c:s0360544219315208
    DOI: 10.1016/j.energy.2019.07.178
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    Citations

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    Cited by:

    1. Dilvin Cebi & Melih Soner Celiktas & Hasan Sarptas, 2022. "A Review on Sewage Sludge Valorization via Hydrothermal Carbonization and Applications for Circular Economy," Circular Economy and Sustainability,, Springer.
    2. Zhuang, Xiuzheng & Liu, Jianguo & Zhang, Qi & Wang, Chenguang & Zhan, Hao & Ma, Longlong, 2022. "A review on the utilization of industrial biowaste via hydrothermal carbonization," Renewable and Sustainable Energy Reviews, Elsevier, vol. 154(C).
    3. Wang, Ruikun & Lin, Zhaohua & Meng, Shu & Liu, Senyang & Zhao, Zhenghui & Wang, Chunbo & Yin, Qianqian, 2022. "Effect of lignocellulosic components on the hydrothermal carbonization reaction pathway and product properties of protein," Energy, Elsevier, vol. 259(C).
    4. Francesco Facchini & Giovanni Mummolo & Micaela Vitti, 2021. "Scenario Analysis for Selecting Sewage Sludge-to-Energy/Matter Recovery Processes," Energies, MDPI, vol. 14(2), pages 1-21, January.
    5. Lu, Xiaoluan & Ma, Xiaoqian & Chen, Xinfei, 2021. "Co-hydrothermal carbonization of sewage sludge and lignocellulosic biomass: Fuel properties and heavy metal transformation behaviour of hydrochars," Energy, Elsevier, vol. 221(C).
    6. Abu-Taher Jamal-Uddin & Shakirudeen A. Salaudeen & Animesh Dutta & Richard G. Zytner, 2022. "Hydrothermal Conversion of Waste Biomass from Greenhouses into Hydrochar for Energy, Soil Amendment, and Wastewater Treatment Applications," Energies, MDPI, vol. 15(10), pages 1-21, May.
    7. Manfredi Picciotto Maniscalco & Maurizio Volpe & Antonio Messineo, 2020. "Hydrothermal Carbonization as a Valuable Tool for Energy and Environmental Applications: A Review," Energies, MDPI, vol. 13(16), pages 1-26, August.
    8. Antonio Picone & Maurizio Volpe & Antonio Messineo, 2021. "Process Water Recirculation during Hydrothermal Carbonization of Waste Biomass: Current Knowledge and Challenges," Energies, MDPI, vol. 14(10), pages 1-14, May.
    9. Fabio Merzari & Jillian Goldfarb & Gianni Andreottola & Tanja Mimmo & Maurizio Volpe & Luca Fiori, 2020. "Hydrothermal Carbonization as a Strategy for Sewage Sludge Management: Influence of Process Withdrawal Point on Hydrochar Properties," Energies, MDPI, vol. 13(11), pages 1-22, June.
    10. Wang, Ruikun & Liu, Senyang & Xue, Qiao & Lin, Kai & Yin, Qianqian & Zhao, Zhenghui, 2022. "Analysis and prediction of characteristics for solid product obtained by hydrothermal carbonization of biomass components," Renewable Energy, Elsevier, vol. 183(C), pages 575-585.
    11. Ioannis O. Vardiambasis & Theodoros N. Kapetanakis & Christos D. Nikolopoulos & Trinh Kieu Trang & Toshiki Tsubota & Ramazan Keyikoglu & Alireza Khataee & Dimitrios Kalderis, 2020. "Hydrochars as Emerging Biofuels: Recent Advances and Application of Artificial Neural Networks for the Prediction of Heating Values," Energies, MDPI, vol. 13(17), pages 1-20, September.
    12. Kossińska, Nina & Krzyżyńska, Renata & Ghazal, Heba & Jouhara, Hussam, 2023. "Hydrothermal carbonisation of sewage sludge and resulting biofuels as a sustainable energy source," Energy, Elsevier, vol. 275(C).

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