Thermochemical valorisation of waste: Pyrolytic conversion of horse manure

Stefano Caro*, Olli Dahl

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
157 Downloads (Pure)


The efficient and sustainable disposal of waste represents one of the major challenges for the human beings in the next future. The thermochemical conversion of livestock manure to biochar has received much interest thanks to its greenhouse gases extenuation and amendment power. In this study, horse manure was processed under pyrolytic condition at different temperatures, heating rate and residence times. In the first phase, a set of preliminary analysis aimed to assess the physical and chemical properties of the horse manure were carried out. Analogously, after the pyrolysis, the biochar was analysed both from the chemical and physical point of view. The results showed that the major impact on biochar yield (average −32%), pH (average + 40%), SSA (average 27.8 m2/g), PAH content, C (average + 37.4%) H (average −53.1%) N (average −15.5%) S (average −65.9%) O (average −37%) content was due to the HHT (highest heating temperature). Residence time (RT) and heating rate (HR) do not display a noticeable trend for most of the parameters. This analysis permitted to assess a range of pyrolysis parameters to treat this kind of biomass: 600°C (HHT), 10 °C/min (HR) and 2h (RT), in order to comply with EBC (European Biochar Certification) standard.

Original languageEnglish
Article number100181
Number of pages7
JournalCleaner Engineering and Technology
Early online date25 Jun 2021
Publication statusPublished - Oct 2021
MoE publication typeA1 Journal article-refereed


  • Biochar
  • Horse manure
  • Pyrolysis
  • Waste disposal


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