评估用于储存天然气的深含水层的原位生物甲烷化潜力。

IF 4.3 3区 材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
M. Ranchou-Peyruse, Marion Guignard, P. Chiquet, Guilhem Caumette, Pierre Cézac, Anthony Ranchou-Peyruse
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引用次数: 0

摘要

二氢(H2)行业正在发展之中,需要大量的存储解决方案。为了最大限度地降低成本,人们倾向于将用于天然气储存的 UGS 场址(如深含水层)转化为未来的地下氢储存(UHS)场址。然而,这些地点含有能够消耗 H2 的微生物,主要是硫酸盐还原菌和甲烷菌。因此,甲烷生成是可以预期的,但必须对其强度进行评估。在这里,我们在一个用于地下水自动监测系统的深含水层中对 17 个地点进行了采样,这些地点的硫酸盐浓度较低,从 21.9 微摩尔到 197.8 微摩尔不等,地层水更新缓慢。H2 选定的群落主要由甲烷杆菌科和甲烷热杆菌科以及脱硫弧菌属、热脱硫弧菌属和脱硫藻属组成。实验是在不同条件下进行的,在有或没有方解石/岩石的 H2 或 H2/CO2(80/20)气相存在的情况下,硫酸盐还原和甲烷生成都得到了证实。在某些条件下(不含二氧化碳),这些新陈代谢导致 pH 值升高至 10.2。结果表明,岩石自养生物与碳酸盐矿物沉淀之间对 CO2 的竞争可能会限制微生物对 H2 的消耗。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessment of the in situ biomethanation potential of a deep aquifer used for natural gas storage.
The dihydrogen (H2) sector is undergoing development and will require massive storage solutions. To minimize costs, the conversion of UGS sites, such as deep aquifers, used for natural gas storage into future underground hydrogen storage (UHS) sites is the favored scenario. However, these sites contain microorganisms capable of consuming H2, mainly sulfate reducers and methanogens. Methanogenesis is therefore expected but its intensity must be evaluated. Here, in a deep aquifer used for UGS, 17 sites were sampled, with low sulfate concentrations ranging from 21.9 to 197.8 µM and a slow renewal of formation water. H2 selected communities mainly were composed of the families Methanobacteriaceae and Methanothermobacteriaceae and the genera Desulfovibrio, Thermodesulfovibrio and Desulforamulus. Experiments were done under different conditions, and sulfate reduction, as well as methanogenesis, were demonstrated in the presence of a H2 or H2/CO2 (80/20) gas phase, with or without calcite/site rock. These metabolisms led to an increase in pH up to 10.2 under certain conditions (without CO2). The results suggest competition for CO2 between lithoautotrophs and carbonate mineral precipitation, which could limit microbial H2 consumption.
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来源期刊
CiteScore
7.20
自引率
4.30%
发文量
567
期刊介绍: ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric. Indexed/​Abstracted: Web of Science SCIE Scopus CAS INSPEC Portico
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