Valorization of animal manure via pyrolysis for bioenergy: A review

Guangcan Su, Hwai Chyuan Ong, Nurin Wahidah Mohd Zulkifli, Shaliza Ibrahim, Wei Hsin Chen, Cheng Tung Chong, Yong Sik Ok

Research output: Contribution to journalReview articlepeer-review

32 Citations (Scopus)


The continuous development of the economy and the constant improvement of living standards have stimulated the development of animal husbandry. This development has been accompanied by the massive production of animal manure with various bad odors and high heavy metal content, constituting severe damage to ecological security and human health. Traditional disposal methods, including composting and anaerobic digestion, are difficult to achieve satisfactory results due to long processing time, water and soil eutrophication, and toxic gas emissions. However, converting animal manure into bioenergy through pyrolysis is a clean, safe, and promising technique to reduce the amount of waste and produce valuable products. Co-pyrolysis with other materials can decrease the content of heavy metals in biochar and ameliorate the properties of products. The application of catalysts influences the pyrolysis process and product properties positively. The objective of this review is to analyze the properties of animal manure and discuss the recovery of biofuel from harmful animal manure by pyrolysis. A comprehensive analysis of animal manure pyrolysis and related product characteristics will provide a foundation for the sustainable management and scientific disposal of hazardous manure waste.

Original languageEnglish
Article number130965
JournalJournal of Cleaner Production
Publication statusPublished - 2022 Apr 1

Bibliographical note

Funding Information:
We would like to acknowledge the support of The Fengtay Cultural and Educational Foundation .

Publisher Copyright:
© 2022


  • Animal manure
  • Biofuel
  • Catalytic co-pyrolysis
  • Environmental sustainability
  • Waste-to-energy

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • General Environmental Science
  • Strategy and Management
  • Industrial and Manufacturing Engineering


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