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Sensitivity analysis of parameters on carbon dioxide desorption processes from aqueous monoethanolamine solution 单乙醇胺水溶液二氧化碳解吸过程参数敏感性分析
IF 2.7 4区 环境科学与生态学 Q3 ENERGY & FUELS Pub Date : 2024-08-06 DOI: 10.1002/ghg.2299
Armando Zanone, José Luis de Paiva

Carbon dioxide (CO2) capture technologies are crucial for mitigating climate change, with post-combustion capture (PCC) using chemical absorption being a leading method. However, the energy-intensive solvent regeneration process presents a significant challenge, consuming up to 50% of the total energy in carbon sequestration. Despite extensive research on absorption, desorption studies remain limited. This study focuses on the desorption analysis through experimental runs in a pilot-scale tray column with varying flow rates, validating an Aspen Plus model. The research compares the impact of the number of stages, feed stage position, column pressure, and reflux ratio between equilibrium and rate-based models. The findings reveal enhanced desorption efficiency through optimized operational conditions, including reduced flow rates, additional equilibrium stages, feeding stage positioning closer to the condenser, elevated pressures, and lower reflux ratios. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.

二氧化碳(CO2)捕集技术对于减缓气候变化至关重要,其中利用化学吸收进行燃烧后捕集(PCC)是一种主要方法。然而,高能耗的溶剂再生过程带来了巨大的挑战,其能耗高达碳封存总能耗的 50%。尽管对吸收进行了广泛的研究,但对解吸的研究仍然有限。本研究的重点是通过在中试规模的托盘塔中以不同流速进行实验运行,验证 Aspen Plus 模型的解吸分析。研究比较了平衡模型和基于速率的模型之间的级数、进料级位置、塔压和回流比的影响。研究结果表明,通过优化操作条件,包括降低流速、增加平衡级、进料级位置更靠近冷凝器、升高压力和降低回流比,解吸效率得到了提高。© 2024 化学工业协会和 John Wiley & Sons, Ltd. 保留所有权利。
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引用次数: 0
High efficient CuCeO2-δ/SiO2 catalyst for RWGS reaction: impact of Ce content and loading sequence 用于 RWGS 反应的高效 CuCeO2-δ/SiO2 催化剂:Ce 含量和负载顺序的影响
IF 2.7 4区 环境科学与生态学 Q3 ENERGY & FUELS Pub Date : 2024-07-16 DOI: 10.1002/ghg.2294
Shan Zhao, Le Yang, Shen Yao, Yahong Dai, Shuang Chen, Jia Zeng, Aiping Jia, Hongmei Xie, Guilin Zhou

The extensive use of fossil energy leads to wanton emission of CO2 and serious environmental problems. The exploration of high-performance catalysts plays a pivotal role in CO2 resource utilization. In this paper, CuCeyK catalysts are prepared by wet impregnation method using ordered mesoporous SiO2 as support for the reverse water gas shift (RWGS) reaction. The physicochemical properties of the prepared catalysts are characterized by H2-TPR, BET, XRD, Quasi in-situ XPS, H2-TPD, and CO2-TPD techniques. The results demonstrate thatthe Cu0 species can form synergistic effects with oxygen vacancies (Ov) to enhance the CuCeyK catalytic performance. Additionally, the electronic effects between Ce and Cu not only enhances the adsorption and activation performances of the catalyst towards CO2 and H2 molecules, but also effectively suppresses the sintering of Cu0 species, thereby enhancing the stability of the corresponding catalyst. It is worth mentioning that the Ce content also directly affects the catalytic performances of the CuCeyK catalyst. The CuCe15K catalyst with a Ce content of 15% displays excellent CO2 hydrogenation performances, and the CO2 conversion and CO selectivity up to 41 % and 100 % at 420 °C, respectively. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.

化石能源的大量使用导致二氧化碳的肆意排放和严重的环境问题。高性能催化剂的探索在二氧化碳资源利用中起着举足轻重的作用。本文以有序介孔二氧化硅为载体,采用湿法浸渍制备了 CuCeyK 催化剂,用于反向水煤气变换(RWGS)反应。采用 H2-TPR、BET、XRD、准原位 XPS、H2-TPD 和 CO2-TPD 技术对所制备催化剂的理化性质进行了表征。结果表明,Cu0 物种能与氧空位(Ov)形成协同效应,从而提高 CuCeyK 的催化性能。此外,Ce 和 Cu 之间的电子效应不仅能提高催化剂对 CO2 和 H2 分子的吸附和活化性能,还能有效抑制 Cu0 物种的烧结,从而提高相应催化剂的稳定性。值得一提的是,Ce 的含量也会直接影响 CuCeyK 催化剂的催化性能。Ce 含量为 15%的 CuCe15K 催化剂具有优异的 CO2 加氢性能,在 420 °C 时 CO2 转化率和 CO 选择性分别高达 41% 和 100%。© 2024 化学工业协会和 John Wiley & Sons, Ltd. 保留所有权利。
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引用次数: 0
Evaluation of dimethyl carbonate production process from CO2 by rigorous simulation and detailed optimization 通过严格模拟和详细优化评估利用二氧化碳生产碳酸二甲酯的工艺
IF 2.7 4区 环境科学与生态学 Q3 ENERGY & FUELS Pub Date : 2024-07-08 DOI: 10.1002/ghg.2293
Zhe Sun, Heyu Li, Yan Cao

The CO2-derived dimethyl carbonate (DMC) synthesis process becomes greatly attentive but suffers high energy consumption in DMC distillation process. In this work, the DMC-MeOH azeotropes separation process by pressure swing distillation and extractive distillation was compared, and key operating parameters, including the total number of trays and the feeding position of the mixture liquid, were optimized with the minimum total annual cost (TAC) as the objective function. On the basis of this optimization, economic evaluation of different distillation processes was conducted, and it was found that extractive distillation was more economical than pressure swing distillation. The application of the dividing-wall distillation process upgraded by extractive distillation can significantly reduce the minimum annual total cost by 37.4% and 10.7% compared to the original pressure swing distillation and extractive distillation process, respectively. The optimization of relevant heat exchange network based on pinch technology resulted in energy consumption reduction by 27.2% and 25.9% for its hot and cold utilities, respectively. Carbon life cycle assessment (LCA) on the DMC distillation process revealed over 50% of energy as well as carbon emissions from steam consumption, whose reduction can significantly minimize CO2 emissions, energy consumption, and ultimate cost. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.

二氧化碳衍生碳酸二甲酯(DMC)的合成工艺变得非常精细,但在 DMC 蒸馏过程中能耗较高。本研究比较了变压蒸馏法和萃取蒸馏法的 DMC-MeOH 共沸物分离工艺,并以年总成本(TAC)最小为目标函数,优化了包括塔盘总数和混合液进料位置在内的关键操作参数。在此优化基础上,对不同蒸馏工艺进行了经济性评估,发现萃取蒸馏比变压蒸馏更经济。与原有的变压蒸馏和萃取蒸馏工艺相比,应用由萃取蒸馏升级而来的分壁蒸馏工艺可显著降低最低年总成本,降幅分别为 37.4% 和 10.7%。基于掐头技术对相关热交换网络进行优化后,其热公用设施和冷公用设施的能耗分别降低了 27.2% 和 25.9%。对 DMC 蒸馏过程进行的碳生命周期评估(LCA)显示,超过 50% 的能源和碳排放来自蒸汽消耗,减少蒸汽消耗可显著减少二氧化碳排放、能源消耗和最终成本。© 2024 化学工业协会和 John Wiley & Sons, Ltd. 保留所有权利。
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引用次数: 0
A comprehensive review of molecular dynamics simulation on the replacement characteristics and mechanism of CO2-CH4 hydrate in porous media systems 多孔介质系统中 CO2-CH4 水合物置换特性与机理的分子动力学模拟综述
IF 2.7 4区 环境科学与生态学 Q3 ENERGY & FUELS Pub Date : 2024-06-30 DOI: 10.1002/ghg.2292
Xuemin Zhang, Tingting Huang, Tao Shan, Qing Yuan, Jinping Li, Qingbai wu, Peng Zhang

Natural gas hydrate (NGH), is a new green-sustainable energy source, and the process of recovering CH4 from NGH by replacing CO2 is regarded as an advantageous way to mine NGH. However, improving the replacement efficiency of CO2-CH4 hydrate is a critical problem in the CO2 replacement mining process. The feasibility study of the replacement for CO2-CH4 hydrate, as well as the research status of the replacement characteristics for various situations, is examined in this review. Additionally, the microscopic mechanism of CO2-CH4 hydrate replacement in porous media is explored in detail. The basic molecular dynamic (MD) simulation method and primary influencing factors of CO2-CH4 hydrate replacement were summarized systematically. Finally, the shortcomings of MD simulation of CO2-CH4 hydrate replacement process in porous medium system and the future development direction are pointed out. The relevant results will offer helpful direction for future NGH exploitation. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.

天然气水合物(NGH)是一种新型绿色可持续能源,通过替代 CO2 从 NGH 中回收 CH4 的工艺被认为是开采 NGH 的一种有利方法。然而,提高 CO2-CH4 水合物的置换效率是 CO2 置换开采过程中的一个关键问题。本综述探讨了 CO2-CH4 水合物置换的可行性研究以及各种情况下置换特性的研究现状。此外,还详细探讨了多孔介质中 CO2-CH4 水合物置换的微观机理。系统总结了基本的分子动力学 (MD) 模拟方法和 CO2-CH4 水合物置换的主要影响因素。最后,指出了多孔介质体系中 CO2-CH4 水合物置换过程 MD 模拟的不足之处和未来的发展方向。相关结果将为未来 NGH 的开发利用提供有益的指导。© 2024 化学工业学会和 John Wiley & Sons, Ltd. 保留所有权利。
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引用次数: 0
Environmental impact investigation of combined CCS and SCR on a ship by a case study 通过案例研究调查船舶上联合使用 CCS 和 SCR 对环境的影响
IF 2.7 4区 环境科学与生态学 Q3 ENERGY & FUELS Pub Date : 2024-06-20 DOI: 10.1002/ghg.2291
Bugra Arda Zincir, Burak Zincir, Cengiz Deniz, Hasan Bora Usluer, Yasin Arslanoglu

The environmental and economic performance of a post-combustion solvent-based carbon capture system (CCS) combined with a selective catalytic reduction (SCR) system is investigated on a 48,600 kW engine container ship to meet the International Maritime Organization's emission reduction strategies through 2050. The proposed system uses aqueous ammonia to mitigate the produced CO2 and NOX emissions onboard a ship. Moreover, the combined system is investigated through a voyage-based case study using an engine room simulator, assuming that CCS and SCR are implemented on the reference ship. During the case study, the referenced container ship sailed from Rotterdam to New York, and the estimations were made by using Netpas Distance 4.0 software program. Results indicate that a total of 3,606.04 ton-CO2 and 92.40 ton-NOX are produced, while 3,345.43 ton-CO2 and 40.67 ton-NOX are captured during the voyage. Furthermore, an economic analysis is carried out after the case study. Findings of the economic analysis are: CAPEX of CCS is $32.07 MM and SCR is $2.19 MM, while OPEX of CCS and SCR are $188,873 and $103,681, respectively. In addition, it was calculated that implementing CCS could avoid the CO2 tax cost of $19,472, while the economic value of the CO2 captured was $113,590. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.

为了满足国际海事组织到 2050 年的减排战略,我们在一艘 48,600 千瓦发动机的集装箱船上研究了燃烧后溶剂型碳捕集系统 (CCS) 与选择性催化还原 (SCR) 系统相结合的环境和经济性能。所提议的系统使用氨水来减少船上产生的二氧化碳和氮氧化物排放。此外,通过使用机房模拟器进行基于航程的案例研究,假定在参考船上实施 CCS 和 SCR,对组合系统进行了研究。在案例研究期间,参考的集装箱船从鹿特丹驶往纽约,并使用 Netpas Distance 4.0 软件程序进行了估算。结果表明,航行期间共产生 3,606.04 吨二氧化碳和 92.40 吨氮氧化物,同时捕获 3,345.43 吨二氧化碳和 40.67 吨氮氧化物。此外,在案例研究之后还进行了经济分析。经济分析结果如下CCS 的 CAPEX 为 3207 万美元,SCR 为 219 万美元,而 CCS 和 SCR 的 OPEX 分别为 188873 美元和 103681 美元。此外,根据计算,实施 CCS 可避免 19,472 美元的二氧化碳税成本,而捕获的二氧化碳的经济价值为 113,590 美元。© 2024 化学工业协会和约翰威利父子有限公司版权所有。
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引用次数: 0
Cover Image, Volume 14, Issue 3 封面图片,第 14 卷第 3 期
IF 2.2 4区 环境科学与生态学 Q2 Environmental Science Pub Date : 2024-06-04 DOI: 10.1002/ghg.2290

The cover image is based on the Modeling and Analysis Mechanistic analysis of acid gas storage and oil recovery in naturally fractured reservoirs using single matrix block approach by Goran Shirzad et al., https://doi.org/10.1002/ghg.2276.

封面图像基于 Goran Shirzad 等人的 "利用单基质区块法对天然裂缝储层中酸性气体储存和石油采收的建模与分析机理分析",https://doi.org/10.1002/ghg.2276。
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引用次数: 0
A study on decompression wave propagation characteristics during CO2 pipeline leakage with consideration of gas-liquid transition 考虑气液转换的二氧化碳管道泄漏时减压波传播特性研究
IF 2.7 4区 环境科学与生态学 Q3 ENERGY & FUELS Pub Date : 2024-06-03 DOI: 10.1002/ghg.2283
Liu Bin, Li Kaixuan, Yu Zhipeng, Wang Zaizhou, Chen Wenjun

Pipelines stand as the most cost-effective method for large-scale transportation of CO2 from a source point to the storage site, especially over extensive distances. The potential for crack propagation following a pipeline rupture highlights the need for precise analysis of decompression wave propagation. To accurately model this, understanding the decompression wave's propagation laws becomes imperative. Although previous studies have predominantly focused on pipeline leaks within the dense phase or supercritical state, the transition from liquid to gas during leakage significantly affects the decompression wave propagation. When a gaseous CO2 pipeline ruptures, the high Joule-–Thomson coefficient causes a swift temperature plunge, potentially leading to a gas–liquid transition. However, research on how this phase transition impacts the decompression wave characteristics is limited. To address this gap, this study proposes a transition computational fluid dynamics model to predict the decompression wave behavior. The model is validated with an industrial-scale full-bore rupture experiment. The results reveal that the gaseous CO2 leakage induces a pressure plateau at a certain distance from the leakage due to the gas-liquid phase transition. The influences of initial conditions on this pressure plateau and decompression wave are also explored. This study provides valuable insights into understanding the decompression wave behaviors of gaseous CO2 pipelines, which are essential for ensuring the safety and reliability of CO2 transportation within the carbon capture and storage technology chain. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.

管道是将二氧化碳从源点大规模运输到贮存地点的最具成本效益的方法,尤其是在长距离运输方面。管道破裂后裂缝传播的可能性突出表明,需要对减压波的传播进行精确分析。为了准确地建立模型,了解减压波的传播规律势在必行。虽然以往的研究主要集中在稠密相或超临界状态下的管道泄漏,但泄漏过程中从液态到气态的转变会极大地影响减压波的传播。当气态二氧化碳管道破裂时,高焦耳-汤姆森系数会导致温度急剧下降,从而可能导致气液转换。然而,关于这种相变如何影响减压波特性的研究还很有限。针对这一空白,本研究提出了一个过渡计算流体动力学模型来预测减压波的行为。该模型通过工业规模的全口径破裂实验进行了验证。结果表明,由于气液相变,气态二氧化碳泄漏会在距离泄漏点一定距离处产生压力高原。研究还探讨了初始条件对该压力高原和减压波的影响。这项研究为了解气态二氧化碳管道的减压波行为提供了宝贵的见解,这对于确保碳捕获与封存技术链中二氧化碳运输的安全性和可靠性至关重要。© 2024 化学工业协会和约翰-威利父子有限公司版权所有。
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引用次数: 0
Synergies of storing hydrogen at the crest of CO 2 ${rm CO}_{2}$ or other gas storage 在 CO2${rm CO}_{2}$ 或其他气体储存的顶峰储存氢气的协同效应
IF 2.7 4区 环境科学与生态学 Q3 ENERGY & FUELS Pub Date : 2024-05-20 DOI: 10.1002/ghg.2278
Sabrine Ben Rhouma, Salaheddine Chabab, Daniel Broseta

There are mutual benefits in storing H2${rm H}_2$ in sedimentary reservoirs jointly with another gas serving as a cushion gas, such as the CO2${rm CO}_2$ of a carbon capture and storage (CCS) operation or the natural gas of seasonal storage or left in a depleted hydrocarbon reservoir. When H2${rm H}_2$ occupies the crest of the reservoir, the presence of either gas is beneficial to the other. H2${rm H}_2$ reinforces the sealing efficiency of the caprock due to its very favorable interfacial properties with respect to brine and rock-forming minerals. H2${rm H}_2$ storage safety and capacity are also increased with cushion gases such as CO2${rm CO}_2$, which alleviate the buoyancy pressure at the top of the gas column. The potential drawback of this storage scheme is gas/gas mixing, which can, however, be strongly reduced if, by an appropriate choice of well completion and placement, H2${rm H}_2$ is positioned in the upper zones of the reservoir, and its injection rate is kept below a critical value corresponding to the incipient fingering instability of the H2/
在沉积储层中与作为缓冲气的另一种气体共同储存,如碳捕集与封存(CCS)作业或季节性储存的天然气或留在枯竭碳氢化合物储层中的天然气,是互惠互利的。由于缓冲气与盐水和成岩矿物之间的界面特性非常有利,因此可加强盖岩的密封效率。缓冲气(如Ⅴ)可减轻气柱顶部的浮力压力,从而提高储藏安全性和容量。这种储气方案的潜在缺点是气体/气体混合,但如果选择适当的完井方式和位置,将气井置于储层的上部区域,并将注入速度控制在气体混合区初期指状不稳定性的临界值以下,则可以大大减少气体/气体混合。该值取决于储层渗透率、混合前沿的倾角以及密度随混合前沿粘度的变化情况,结果远高于实际注入率。因此,分散混合是造成前沿扩散的唯一原因,这对于不是太均质的储层来说是可以接受的。本研究发现,当缓冲层由致密的Ⅴ类物质组成时,互利性最强,这表明海上储油层的峰顶是储油的良好候选地。© 2024 作者。温室气体:科学与技术》由化学工业协会和 John Wiley & Sons Ltd. 出版。
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引用次数: 0
Fabrication of new in-situ ternary nano/microcomposite LDH/Ag2O/Bayerite in trimetallic NiAg/Al layered double hydroxides for CO2 capture material 在镍银铝三金属层状双氢氧化物中原位制备用于二氧化碳捕集材料的新型三元纳米/微复合材料 LDH/Ag2O/Bayerite
IF 2.2 4区 环境科学与生态学 Q2 Environmental Science Pub Date : 2024-05-18 DOI: 10.1002/ghg.2282
Muh. Nur Khoiru Wihadi

We reported new in-situ ternary nano/microcomposite layered double hydroxides/Ag2O/bayerite in trimetallic NiAg/Al layered double hydroxides (LDH) via hydrothermal technique; and characterization by powder X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM), energy dispersive spectroscopy (EDS), and N2 adsorption-desorption. The formation of bayerite and silver oxide species on the LDH nanosheet depended on the excess of Al3+ and Ag+ in the solution under alkaline and hydrothermal conditions. The nitrogen isotherm adsorption profile for all ternary composites exhibited uniformity with mesoporous and lamellar characteristics. The surface area of all the composites ranged from 81.17 to 150.23 m2. g−1, the Barret-Joyner-Halenda (BJH) pore volume from 0.22 to 0.27 cm3. g−1, and the average pore diameter ranged from 3.47 to 5.78 nm. All composites show a laminar plate-like structure covered with elongated pieces. The particle size of the composites ranged from 54.86 to 115.96 nm, indicating the size changed from nano to microcomposite because of the different molar ratios of Ag and Ni in the solid. The ternary composite reveals CO2 capture activity with adsorption capacity ranging from 13.93 to 19.61 mmol g−1. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.

我们报告了通过水热技术在镍银铝三金属层状双氢氧化物(LDH)中制备的新型原位三元纳米/微复合层状双氢氧化物/氧化银/贝叶石,并通过粉末 X 射线衍射(XRD)、傅立叶变换红外光谱(FT-IR)、场发射扫描电子显微镜(FE-SEM)、能量色散光谱(EDS)和 N2 吸附-解吸进行了表征。在碱性和水热条件下,LDH 纳米片上形成的贝叶石和氧化银物种取决于溶液中 Al3+ 和 Ag+ 的过量。所有三元复合材料的氮等温线吸附曲线都表现出均匀的介孔和片状特征。所有复合材料的表面积在 81.17 至 150.23 m2. g-1 之间,Barret-Joyner-Halenda(BJH)孔体积在 0.22 至 0.27 cm3. g-1 之间,平均孔直径在 3.47 至 5.78 nm 之间。所有复合材料都呈现出层状板状结构,上面覆盖着细长的碎片。复合材料的粒度范围为 54.86 至 115.96 nm,表明由于固体中 Ag 和 Ni 的摩尔比不同,复合材料的粒度从纳米级变为微米级。三元复合材料具有二氧化碳捕集活性,吸附容量在 13.93 到 19.61 mmol g-1 之间。© 2024 化学工业协会和约翰威利父子有限公司版权所有。
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引用次数: 0
Microbial impact on basalt-water-hydrogen system: Insights into wettability, capillary pressure, and interfacial tension for subsurface hydrogen storage 微生物对玄武岩-水-氢系统的影响:对地下储氢的润湿性、毛细管压力和界面张力的见解
IF 2.2 4区 环境科学与生态学 Q2 Environmental Science Pub Date : 2024-05-16 DOI: 10.1002/ghg.2277
Adnan Aftab, Ahmed Al-Yaseri, Alexis Nzila, Jafar Al Hamad, Mohammad Sarmadivaleh

Hydrogen (H2) fuel is assessed to be a major component of sustainable energy systems in the net-zero world. However, hydrogen storage is challenging and requires safe and environmentally friendly solutions like H2 geo-sequestration. This study evaluates the effects of sulphate-reducing bacteria (SRB) on H2 geological storage potential in the basalt rock. Fourier-transform infrared spectroscopy (FTIR) findings show the presence of significant components, that is, O-Si-O and organic functional groups, that is, aromatics, amine salts, alkane, and cyclohexane in the basalt rock immersed in the nutrient solution without SRB. However, we found that C-H stretching modes of organics with peaks at 1,465 cm−1 were observed. Consequently, amine salt (N-H) (850–750 cm−1), solvent impurities (C-H), and alkane spectrums are components of nutrient solutions and can be results of metabolic microbial activity that can influence on the surface of the basalt rock. Hence, these changes indicate the presence of microbial activity which might affect the surface chemistry of the rock leading to wettability alteration. We observed that the contact angle (θ) of brine-H2 on the rock surface slightly changed from 500 to 4,000 psi pressure after the effect of bacteria at 50 °C. The wettability changed the surface of the rock from strong water-wet to weak or intermediate water-wet condition (i.e., θ < 75°) at 4,000 psi and temperatures 25 and 50 °C after the bacteria effect. The affiliation of brine water reduces on the rock surface with increasing temperatures and pressures, even without microbial influence. Additionally, we investigated interfacial tension and capillary pressure on SRB bacteria treated basalt which is not yet reported in the published work. Interfacial tension (IFT) and Pc of H2 were reduced by 19% and 65%, respectively at 50 °C and 4,000 psi after the bacteria effect. Hence, the above findings could help to answer the key factors of the reservoir rock including wettability, capillary pressure, and interfacial tension to plan a field-scale H2 geo-sequestration strategy under the influence of biotic life. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.

据评估,氢(H2)燃料是零净世界可持续能源系统的主要组成部分。然而,氢的储存具有挑战性,需要安全、环保的解决方案,如氢的地质封存。本研究评估了硫酸盐还原菌(SRB)对玄武岩中氢气地质封存潜力的影响。傅立叶变换红外光谱(FTIR)研究结果表明,浸泡在无 SRB 营养液中的玄武岩中存在重要成分,即 O-Si-O 和有机官能团,即芳烃、胺盐、烷烃和环己烷。然而,我们发现有机物的 C-H 伸展模式在 1,465 cm-1 处出现了峰值。因此,胺盐(N-H)(850-750 cm-1)、溶剂杂质(C-H)和烷烃光谱是营养液的成分,可能是微生物代谢活动的结果,会对玄武岩表面产生影响。因此,这些变化表明存在微生物活动,可能会影响岩石的表面化学,导致润湿性改变。我们观察到,在 50 °C 的条件下,受细菌影响后,盐水-H2 在岩石表面的接触角(θ)从 500 psi 压力到 4,000 psi 压力略有变化。细菌作用后,在压力 4,000 psi、温度 25 和 50 °C条件下,岩石表面的润湿性从强水湿状态变为弱水湿或中等水湿状态(即θ < 75°)。即使没有微生物的影响,随着温度和压力的升高,盐水在岩石表面的隶属度也会降低。此外,我们还研究了经 SRB 细菌处理的玄武岩的界面张力和毛细管压力,这在已发表的研究中尚未见报道。在 50 °C 和 4,000 psi 条件下,经细菌作用后,H2 的界面张力(IFT)和毛细管压力(Pc)分别降低了 19% 和 65%。因此,上述发现有助于回答储层岩石的关键因素,包括润湿性、毛细管压力和界面张力,从而规划生物影响下的野外规模 H2 地球封存战略。© 2024 化学工业协会和约翰-威利父子有限公司版权所有。
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引用次数: 0
期刊
Greenhouse Gases: Science and Technology
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