期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 707, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2019.136122
关键词
Bioenergy; Biochar; Briquettes biofuel; Direct-fired power; Mixed-unit input-output life cycle assessment; Energy production
资金
- National Natural Science Foundation of China [41703084, 41907332]
- USDA-NIFA Hatch program/UMass CAFE [MAS 00549]
- Shandong Provincial Education Department
Crop residue (CR) based-technology has several benefits, including renewable energy production and improvement in the environment and waste biomass management. However, the quantitative assessment of different CR based-technologies in terms of these benefits is limited. In this study, three typical CR-based technologies, CR biochar (CR-BC), CR direct-fired power (CR-DFP), and CR briquette biofuel (CR-BB), were assessed in terms of energy- and environment-related performances using a mixed-unit input-output life cycle assessment method. The results indicated that CR-BB performed better in energy production and air pollution mitigation than the other two technologies. Energy conversion efficiency was suggested as a key factor in determining the potentials of bioenergy production and environmental improvement. Furthermore, based on the energy demand from the Chinese agricultural sector and CR supply in 2012, the energy supply capacity (ESI) of CR-BC, CR-DFP, and CR-BB was estimated to be 24.3, 2.89, and 53.0, respectively, and their total greenhouse gas (GHG) reduction potential (TRGHG) was estimated to be 1.41 x 10(6), 4.81 x 10(6), and 1.68 x 10(6) t CO2e (CO2 equivalent), respectively. Overall, the CR-DFP and CR-BC are recommended for the high-value utilization of CR resources. The findings of this study could provide a basis for the development of CR-based technologies and CR management policy. (C) 2018 Elsevier B.V. All rights reserved.
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