College of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China.
Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, United States.
J Environ Manage. 2020 Jun 15;264:110481. doi: 10.1016/j.jenvman.2020.110481. Epub 2020 Apr 1.
The methods of life cycle assessment and cost-effectiveness analysis were employed to compare the energetic, environmental, and economic performances of three household-based modern bioenergy (MBE) utilization systems: biogas utilization (BGs), biomass briquette utilization for energy only (BBs), and biomass briquette utilization for energy and biochar (BCs). The results showed that all the three MBEs performed positive results in net energy output, which ranged from 0.86 to 3.75 MJ (kg crop residues). The positive greenhouse gas reductions also can be acquired when using these three MBEs to substitute for traditional energy, respectively. The cost-effectiveness values of three MBE systems ranged from 343 RMB (tCO) for BGs to 598 RMB (tCO) for BCs (the CO indicates the CO equivalent). Considering the supply index analysis results furtherly, the BGs is regarded as the best strategy for the development of MBE in rural households. However, BG leakage during BG digester operations should be received much greater attention to avoid adverse impacts on GHG mitigation.
采用生命周期评估和成本效益分析方法，比较了三种基于家庭的现代生物能源（MBE）利用系统的能源、环境和经济性能：沼气利用（BGs）、仅用于能源的生物质压块利用（BBs）和用于能源和生物炭的生物质压块利用（BCs）。结果表明，所有三种 MBE 在净能源输出方面均表现出积极的结果，范围为 0.86 至 3.75 MJ（kg 农作物残余物）。当使用这三种 MBE 替代传统能源时，也可以获得积极的温室气体减排效果。三种 MBE 系统的成本效益值范围从 BGs 的 343 人民币（tCO）到 BCs 的 598 人民币（tCO）（CO 表示 CO 当量）。进一步考虑供应指数分析结果，BGs 被认为是农村家庭发展 MBE 的最佳策略。然而，在 BG 沼气池运行期间，BG 泄漏应引起更多关注，以避免对温室气体减排产生不利影响。
