Regional integrative benefits of converting livestock excrements to energy in China: An elaborative assessment from life cycle perspective
Regional integrative benefits of converting livestock excrements to energy in China: An elaborative assessment from life cycle perspective
复制标题
中国畜禽粪便转化能源的区域综合效益：从生命周期角度进行精细评估
DOI：
10.1016/j.jclepro.2020.122470
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发表时间：
2020
影响因子：
11.1
通讯作者：
Duan Haiyan
中科院分区：
文献类型：
--
作者：
Xing Jiahao;Song Junnian;Ren Jingzheng;Yang Wei;Duan Haiyan
畜禽粪便是重要的生物质资源，利用畜禽粪便进行能源转化可以改善环境问题，创造经济效益。LEs利用所带来的综合效益还没有得到充分的探讨，特别是从生命周期的角度。由于畜牧业发展水平的不同，中国各省区的生态足迹利用可能存在空间差异。我们构建了一个综合评估模型，该模型能够详细说明从商业规模畜牧业饲养场利用LEs的生命周期能源，环境和社会经济效益。将该模型应用于中国30个省级区域，以揭示其效益的空间特征。从国家层面来看，2008-2017年，稀土元素理论储量呈上升趋势，2017年达到200.36 Mt。可产生11.30 Mt煤当量净能源效益。富营养化潜力最大，为−9.08E+08 kg PO 4-eq，占总潜力的96.77%，其次是气候变化、光化学氧化和酸化潜力。四川省的气候变化和光化学氧化减缓潜力最大，河南省的富营养化和酸化减缓潜力最大。总净利润18.8亿美元，创造就业7.306万人。三类效益在空间上总体上形成一致性，四川、云南、山东、河南、黑龙江、内蒙古、湖南、河北较具优势。在部署LE利用率时，应优先考虑这些区域。本研究所呈现的综合效益及其空间特征，可望为区域生态系统利用与发展规划的制定提供更好的依据。
Livestock excrements (LEs) are important biomass, whose utilization for energy conversion can potentially ameliorate environmental problems and create economic profits. The integrative benefits contributed by LEs utilization have not been adequately explored especially from life cycle perspective. Due to different levels of husbandry development, LEs utilization in China’s provincial regions may present spatial disparity. We construct an integrated assessment model that is capable of elaborating the life cycle energy, environmental and socioeconomic benefits of utilizing LEs from commercial scale husbandry feedlots. The model is applied to 30 provincial regions in China to reveal the spatial features of the benefits. On the national level, the theoretical reserve of LEs shows an increasing trend during 2008–2017, reaching 200.36 Mt in 2017. 11.30 Mt coal-eq net energy benefits can be generated. The eutrophication potential is most significant as −9.08E+08 kg PO4-eq, accounting for 96.77% in total potential followed by the potentials of climate change, photochemical oxidation and acidification. Sichuan has the largest mitigated potentials of climate change and photochemical oxidation, and Henan has the largest mitigated potentials of eutrophication and acidification. In total 1.88 billion USD net profit and 73.06 thousand employments could be created. There overall forms a consistency among the three types of benefits spatially, with Sichuan, Yunnan, Shandong, Henan, Heilongjiang, Inner Mongolia, Hunan and Hebei more advantageous. These regions should be prioritized when deploying LEs utilization. The comprehensive benefits and their spatial features presented by this study are expected to offer better support in formulating region-specific planning regarding LEs utilization and development.