A critical review on livestock manure biorefinery technologies: Sustainability, challenges, and future perspectives

Benyamin Khoshnevisan, Na Duan*, Panagiotis Tsapekos, Mukesh Kumar Awasthi, Zhidan Liu, Ali Mohammadi, Irini Angelidaki, Daniel C.W. Tsang, Zengqiang Zhang, Junting Pan, Lin Ma, Mortaza Aghbashlo, Meisam Tabatabaei, Hongbin Liu*


Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review


An ever increasing demand for animal protein products has posed serious challenges for managing the increasing quantities of livestock manure. The choice of treatment technologies is still a complicated task and considerable debates over this issue still continue. To build a clearer picture of manure treatment framework, this study was conducted to review the most frequently employed manure management technologies from their state of the art, challenges, sustainability, environmental regulations and incentives, and improvement strategies perspectives. The results showed that most treatment technologies have focused on the solid fraction of manure while the liquid fraction still remains a potential environmental threat. Compared to other waste to energy solutions, anaerobic digestion is the most mature technology to upgrade manure's organic matter into renewable energy, however the problems associated with high investment costs, operating parameters, manure collection, and digestate management have hindered its developments in rural areas in developing countries. Bio-oil production through hydrothermal liquification is also a promising solution, as it can directly convert the wet manure into biofuel. However, lipid-poor nature of manure, operational difficulties, and the need for downstream process to remove nitrogenous compounds from the final product necessitate further research. Livestock manure management (both solid and liquid fractions) under biorefinery approach seems an inevitable solution for future sustainable development to meet circular bioeconomy requirements. Much research is still required to establish a systematic framework based on regional requirements to develop an integrated manure nutrient recycling and manure management planning with minimum environmental risks and maximum profit.

TidsskriftRenewable and Sustainable Energy Reviews
Antal sider24
StatusUdgivet - jan. 2021
Udgivet eksterntJa

Bibliografisk note

Publisher Copyright:
© 2020 Elsevier Ltd


Dyk ned i forskningsemnerne om 'A critical review on livestock manure biorefinery technologies: Sustainability, challenges, and future perspectives'. Sammen danner de et unikt fingeraftryk.