Li Guang, Ma Shuqi, Xue Xiaoxiao, Yang Shicheng, Liu Fan, Zhang Yulong
College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454003, People's Republic of China.
College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454003, People's Republic of China.
Bioresour Technol. 2021 Aug;333:125203. doi: 10.1016/j.biortech.2021.125203. Epub 2021 Apr 21.
Water is essential in conversion of crop to bioenergy. Therefore, it is important to carefully evaluate the impact of bioenergy technology on water source. Life cycle water footprints of biobutanol from wheat straw, corn grain and corn stover are analyzed in this study according to the characteristics of crop growing and climate conditions. The results show that life cycle water footprints of biobutanol from wheat straw, corn grain and corn stover are 271, 108 and 240 L HO/MJ biobutanol, respectively. Life cycle water footprints of the crop production stage for wheat straw, corn grain and corn stover are 269.89, 107.84 and 238.95 L HO/MJ biobutanol, respectively. Owing to the use of fertilizer in the crop production stage, gray water footprint of wheat straw, corn grain and corn stover accounts for 91.08%, 86.65% and 86.40% of the life cycle water footprint, respectively.
水在农作物转化为生物能源的过程中至关重要。因此，仔细评估生物能源技术对水源的影响很重要。本研究根据作物生长特性和气候条件，分析了小麦秸秆、玉米籽粒和玉米秸秆生产生物丁醇的生命周期水足迹。结果表明，小麦秸秆、玉米籽粒和玉米秸秆生产生物丁醇的生命周期水足迹分别为271、108和240升水/兆焦生物丁醇。小麦秸秆、玉米籽粒和玉米秸秆作物生产阶段的生命周期水足迹分别为269.89、107.84和238.95升水/兆焦生物丁醇。由于在作物生产阶段使用了化肥，小麦秸秆、玉米籽粒和玉米秸秆的灰水足迹分别占生命周期水足迹的91.08%、86.65%和86.40%。
