Life cycle water footprint comparison of biomass-to-hydrogen and coal-to-hydrogen processes
Life cycle water footprint comparison of biomass-to-hydrogen and coal-to-hydrogen processes
复制标题
生物质制氢和煤制氢过程的生命周期水足迹比较
DOI：
10.1016/j.scitotenv.2021.145056
复制
发表时间：
2021-02-11
影响因子：
9.8
通讯作者：
Yang, Sheng
中科院分区：
文献类型：
--
作者：
Cui, Peizhe;Yao, Dong;Yang, Sheng
水对于氢的工业生产至关重要。本研究调查了利用生物质和煤炭生产氢气。迄今为止，很少有研究关注生物质制氢和煤制氢过程的水足迹。本研究对麦秆生物质和煤通过热解气化过程制氢进行了生命周期用水分析。结果表明，整个生物质制氢过程的耗水量为76.77 L/MJ，其中生物质培养是主要贡献者（99%）。而煤制氢工艺的耗水量仅为1.06 L/MJ，其中煤炭生产阶段仅占总耗水量的4.15%，远低于生物质制氢工艺。生物质制氢阶段扣除秸秆生长用水量占总用水量的76%，而煤制氢阶段占96%。本研究提供了两种制氢过程在特定范围内的相关耗水量，并通过敏感性分析论证了主要因素对总耗水量的影响。 (C) 2021 Elsevier B.V. 保留所有权利。
Water is essential for the industrial production of hydrogen. This study investigates the production of hydrogen from biomass and coal. To date, there are few studies focusing on the water footprint of biomass-to-hydrogen and coal-to-hydrogen processes. This research conducted a life cycle water use analysis on wheat straw biomass and coal to hydrogen via pyrolysis gasification processes. The results show that the water consumption of the entire biomass-to-hydrogen process was 76.77 L/MJ, of which biomass cultivation was the dominant contributor (99%). Conversely, the water consumption of the coal-to-hydrogen process was only 1.06 L/MJ, wherein the coal production stage accounted for only 4.15% for the total water consumption, which is far lower than that of the biomass-to-hydrogen process. The hydrogen production stage of biomass hydrogen production accounted for 76% of the total water consumption when excluding the water consumption of straw growth, whereas that of the coal hydrogen production stage was 96%. This research provides the associated water consumption, within a specified boundary, of both hydrogen production processes, and the influence of major factors on total water consumption was demonstrated using sensitivity analysis. (C) 2021 Elsevier B.V. All rights reserved.