Decarbonizing university campuses through the production of biogas from food waste: an LCA analysis
Decarbonizing university campuses through the production of biogas from food waste: an LCA analysis
复制标题
通过食物垃圾生产沼气实现大学校园脱碳：LCA 分析
DOI：
10.1016/j.renene.2021.05.007
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发表时间：
2021
期刊：
影响因子：
8.7
通讯作者：
F. Fantozzi
中科院分区：
文献类型：
--
作者：
Hewen Zhou;Qing Yang;Eid Gul;Mengmeng Shi;Jiashuo Li;Minjiao Yang;Haiping Yang;Bin Chen;Haibo Zhao;Yunjun Yan;Güneş Erdoğan;P. Bartocci;F. Fantozzi
中国餐饮业每年产生的食物垃圾约为1700万吨至1800万吨。这一部门的粮食损失约占中国总粮食损失的20%。中国国家发展和改革委员会已批准分五批100个试点城市实施食物垃圾处理项目。几乎80%的项目都是基于厌氧消化。因此，非常重要的是要清楚地了解这些新的生物能源或废物转化为能源链对环境的影响（特别是在小规模的情况下）。为此，本研究以华中科技大学校园内29个食堂产生的不可食用食物垃圾为食源，进行厌氧消化工厂的生命周期评估案例研究。分析的影响包括：气候变化、酸化、富营养化和光化学氧化。功能单位用1千瓦时的发电量表示。这项工作表明，小型沼气厂可以在中国的大型大学校园内实现，并且可以有效地减少食物垃圾管理对环境的影响，特别是如果将热解过程与消化液结合起来处理。
The amount of food waste production in China catering industry is approximately 17–18 Mt per year. This sector accounts for about 20% of the total food losses in China. China's National Development and Reform commission has ratified 100 pilot cities in five batches to implement food waste treatment projects. Almost the 80% of these projects is based on anaerobic digestion. So, it is very important to understand clearly which is the environmental impact of these new bioenergy, or waste to energy, chains (especially at a small scale). For this reason, a Life Cycle Assessment case study is presented in this work, based on an anaerobic digestion plant, fed with the non edible food waste produced by 29 canteens, which operate inside the campus of the Huazhong University of Science and Technology (HUST). The analyzed impacts are: Climate Change, Acidification, Eutrophication, and Photochemical Oxidation. The functional unit is represented by 1 kWh of produced electricity. This work demonstrates that small scale biogas plants can be realized inside big Chinese University campuses and can efficiently reduce the environmental impact of food waste management, especially if the pyrolysis process is coupled to dispose the digestate.