生物氢:农村社区工业利用和能源恢复能力的前景

Anurag S. Mandalika, Katherine J. Chou, Stephen R. Decker
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引用次数: 0

摘要

在美国农村地区,利用现有生物质废物流生产生物氢(bioH2)可满足两个现有需求:农村能源弹性和重工业去碳化,包括生产氨和其他依赖氢的含氮产品。我们考虑采用两种不同的策略生产生物 H2:(1) 暗发酵 (DF) 和 (2) 厌氧消化后沼气蒸汽甲烷转化 (AD-SMR)。与天然气-蒸汽甲烷转化(NG-SMR)相比,从生物质废物流中生产生物 H2 是一种潜在的 "绿色 "途径,尤其是可以避免这些废物的逃逸性排放。它还具有水分离技术所不具备的脱碳潜力。根据有关农作物残留物、林业废弃物中的木质生物质残留物以及含油脂(FOG)废水的 DF 和 AD 的文献,我们概述了生物 H2 生产和替代化石燃料产生的甲烷的方案。最后,我们将生物 H2 生产的成本和碳强度 (CI) 与其他 H2 生产途径进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Biohydrogen: prospects for industrial utilization and energy resiliency in rural communities
Biohydrogen (bioH2) production in rural regions of the United States leveraged from existing biomass waste streams serves two extant needs: rural energy resiliency and decarbonization of heavy industry, including the production of ammonia and other H2-dependent nitrogenous products. We consider bioH2 production using two different strategies: (1) dark fermentation (DF) and (2) anaerobic digestion followed by steam methane reforming of the biogas (AD-SMR). Production of bioH2 from biomass waste streams is a potentially ‘greener’ pathway in comparison to natural gas-steam methane reforming (NG-SMR), especially as fugitive emissions from these wastes are avoided. It also provides a decarbonizing potential not found in water-splitting technologies. Based on literature on DF and AD of crop residues, woody biomass residues from forestry wastes, and wastewaters containing fats, oils, and grease (FOG), we outline scenarios for bioH2 production and displacement of fossil fuel derived methane. Finally, we compare the costs and carbon intensity (CI) of bioH2 production with those of other H2 production pathways.
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