Centralized bio-energy mode; Circular economy; Comprehensive evaluation; Integrated regional planning; Life cycle assessment; Manure & sewage management; Bio-energy; Centralised; Energy modes; Manure management; Sewage management; Waste Management and Disposal
Abstract :
[en] Pig breeding is moving toward more intensive development and is accompanied by the integrated generation of pig waste. This has disrupted the synergy between the original manure and sewage management mode and corresponding farmland at the household level. Centralized bio-energy mode is proposed to relieve environmental pressure, increase the resource recovery efficiency and rebuild the breeding and cropping. However, there is a lack of comprehensive information on a regional scale, particularly regarding evaluation, applicability and feasibility. Therefore, compared to the individual and traditional mode at the household level, this study was conducted using life cycle assessment and life cycle cost analysis, systematically assessed the environmental performance and economic viability of the centralized bio-energy mode at the regional scale, and further explored the adaptability of multi-subjects (various pig farms and biogas enterprise) and regional feasibility. Results revealed that the centralized bio-energy mode appeared to be a better alternative in terms of global warming, terrestrial acidification and marine eutrophication, with the significant reductions of 49.49 %, 6.8 % and 4.67 % respectively. Moreover, the study demonstrated a substantial profit of 48.5 CNY1 per ton of managed pig waste. Furthermore, both environmental and economic performance could be improved through scale expansion and transport optimization, with an optimal collection radius of less than 31.45 km. Conclusions clarified the potential of centralized bio-energy mode and provided valuable references for its implementation in various regions. Ultimately, further contributing to a more efficient, cost-effective, and regulated manner for resource recovery, culminating in the sustainability of pig farming and achieving environmental-friendly agriculture practices in regional contexts.
Disciplines :
Chemical engineering Agriculture & agronomy Animal production & animal husbandry
Author, co-author :
Shi, Boyang ; Université de Liège - ULiège > TERRA Research Centre
Yin, Changbin; State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China (Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081,China), Research Center for Agricultural Green Development in China, Beijing 100081, China. Electronic address: yinchangbin@caas.cn
Léonard, Angélique ; Université de Liège - ULiège > Department of Chemical Engineering > PEPs - Products, Environment, and Processes
Jiao, Jian ; Université de Liège - ULiège > TERRA Research Centre
Di Maria, Andrea ; Université de Liège - ULiège > TERRA Research Centre > Biosystems Dynamics and Exchanges (BIODYNE)
Bindelle, Jérôme ; Université de Liège - ULiège > TERRA Research Centre > Animal Sciences (AS)
Yao, Zhizhen; State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China (Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081,China
Language :
English
Title :
Opportunities for centralized regional mode of manure and sewage management in pig farming: The evidence from environmental and economic performance.
Publication date :
17 September 2023
Journal title :
Waste Management
ISSN :
0956-053X
eISSN :
1879-2456
Publisher :
Elsevier Ltd, United States
Volume :
170
Pages :
240 - 251
Peer reviewed :
Peer Reviewed verified by ORBi
Development Goals :
12. Responsible consumption and production 13. Climate action
This research was funded by Major Program of National Fund of Philosophy and Social Science of China (18ZDA048). The China Scholarship Council (CSC) is gratefully acknowledged for financial support of the PhD study of Miss. Boyang Shi. The authors would like to thank the pig farmers for their assistance in data collection.
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