Life-cycle energy production and emissions mitigation by comprehensive biogas-digestate utilization

被引：96

作者：

Chen, Shaoqing ^{[1
]}

Chen, Bin ^{[1
]}

Song, Dan ^{[1
]}

机构：

[1] Beijing Normal Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100875, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 114卷

基金：

国家高技术研究发展计划(863计划);

关键词：

Biogas; Digestate; Energy flow; Emissions mitigation; Life-cycle assessment; ENVIRONMENTAL SYSTEMS-ANALYSIS; ASSESSMENT METHODOLOGY; IMPACT ASSESSMENT; CROP PRODUCTION; CHINA; FOOD; LCA;

D O I：

10.1016/j.biortech.2012.03.084

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In the context of global energy shortages and climate change, developing biogas plants with links to agricultural system has become an important strategy for cleaner rural energy and renewable agriculture. In this study, a life-cycle energy and environmental assessment was performed for a biogas-digestate utilization system in China. The results suggest that biogas utilization (heating, illumination, and fuel) and comprehensive digestate reuse are of equal importance in the total energy production of the system, and they also play an important role in systemic greenhouse gas mitigation. Improvement can be achieved in both energy production and emissions mitigation when the ratio of the current three biogas utilization pathways is adjusted. Regarding digestate reuse, a tradeoff between energy and environmental performance can be obtained by focusing on the substitution for top-dressing, base fertilizers, and the application to seed soaking. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：357 / 364

页数：8

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