Co-hydrothermal carbonization of swine and chicken manure: Influence of cross-interaction on hydrochar and liquid characteristics

Qingyin Li, Shu Zhang, Mortaza Gholizadeh, Xun Hu, Xiangzhou Yuan, Binoy Sarkar, Meththika Vithanage, Ondřej Mašek, Yong Sik Ok

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


Swine and chicken manures are abundant solid wastes that can be converted into carbonaceous materials through hydrothermal carbonization (HTC). Owing to their unique biochemical compositions, co-HTC of these two types of manures may have significant implications for the generated products. We investigated the co-HTC of swine manure and chicken manure to understand the influence of the interaction between contrasting manures on the properties of the derived products. The results indicated that co-HTC treatment enhanced the formation of solid product and improved the C and N contents, heating value, and energy yield of the resulting hydrochar. Regarding the ignition temperature and comprehensive combustion index, the combustion properties of the hydrochar were enhanced owing to the mutual effect of the HTC intermediates. Additionally, the interaction of the intermediates significantly impacted the transfer of nitrogenous species and generation of organic acids and organic polymers with fused-ring structures. Therefore, co-HTC processing of animal manures could potentially provide a sustainable pathway for the conversion of animal waste into solid products with improved characteristics compared to those produced by treating the two feedstocks separately.

Original languageEnglish
Article number147381
JournalScience of the Total Environment
Publication statusPublished - 2021 Sept 10

Bibliographical note

Publisher Copyright:
© 2021


  • Animal waste
  • Biowaste
  • Circular economy
  • Clean energy
  • Hydrochar

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution


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