Article
Energy & Fuels
Kai Liu, Weiyao Zhu, Bin Pan
Summary: A numerical compositional modeling investigation on hydrogen storage in a partially depleted shale gas reservoir in China demonstrates the feasibility of using shale gas reservoir as a promising option for large-scale hydrogen storage. The study shows that a high injection/withdrawal capacity can be achieved, CH4 production is inhibited, and cushion gas injection is beneficial to reducing H2 loss and enhancing H2 recovery.
Article
Energy & Fuels
John D. O. Williams, J. P. Williamson, Daniel Parkes, David J. Evans, Karen L. Kirk, Nixon Sunny, Edward Hough, Hayley Vosper, Maxine C. Akhurst
Summary: This study presents a modelling approach to evaluate the UK's theoretical hydrogen storage capacity in new salt caverns and finds a potential storage capacity exceeding 64 million tonnes. The analysis identifies the practical inter-seasonal storage capacity suitable for integration in a hydrogen transmission system. The availability of salt cavern storage potential does not present a limiting constraint for the development of a low-carbon hydrogen network in the UK.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Mahdi Kanaani, Behnam Sedaee, Mojtaba Asadian-Pakfar
Summary: Hydrogen storage in underground structures is a vital way to maintain the balance between energy production and consumption, with the potential to convert excess electrical energy into chemical energy for temporary storage. The study found that using methane as cushion gas could achieve a maximum hydrogen recovery rate of 89.7%, while absence of cushion gas led to a higher hydrogen loss.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Seyed Hamidreza Yousefi, Remco Groenenberg, Joris Koornneef, Joaquim Juez-Larre, Mina Shahi
Summary: Underground hydrogen storage is critical for future hydrogen infrastructure to ensure supply flexibility and security. Storage in porous reservoirs should be used in combination with salt caverns to meet high storage capacity requirements. A case study of hydrogen storage in a depleted gas field in the Netherlands evaluated its techno-economic feasibility. The study assessed different surface facility designs and calculated the levelized cost of hydrogen storage. The study found that using nitrogen as cushion gas resulted in a lower cost of storage.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Mariana Ciotta, Colombo Tassinari, Luis Guilherme Larizatti Zacharias, Bob van der Zwaan, Drielli Peyerl
Summary: This article estimates the potential of using depleted offshore gas fields in Brazil for hydrogen storage and its effects on energy security. The study finds that the selected fields have the potential to store a significant amount of hydrogen, which can enhance the energy security of Brazil's electricity supply and serve as an important resource in the international energy market.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Manju Pharkavi Murugesu, Nerine Joewondo, Manika Prasad
Summary: When CO2 is injected into storage reservoirs, it flows upward driven by buoyancy towards caprock layers which impede the flow. Caprocks, mostly shale formations, have low pore connectivity but contain nanopores with large surface area that can potentially adsorb and store CO2. The composition of the shale, with varying mineral attributes, influences the wetting and sorption properties. This study investigates the impact of mineral attributes on CO2 accessible pore spaces using low-pressure adsorption. The results show that organic matter and clay minerals primarily drive CO2 adsorption, with organic matter having micropores for storage and affinity for CO2, while clay minerals store CO2 in meso-to macropores. Inorganic minerals, such as carbonate and quartz, have a limited relation to CO2 adsorption, while chemisorbed water in calcite mineral interlayers can dissolve CO2. Multivariate analysis is necessary to understand the correlation between CO2 storage capacity and lithology due to the competing and complementing effects of mineral composition.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2023)
Article
Energy & Fuels
Moein Jahanbani Veshareh, Eike Marie Thaysen, Hamidreza M. Nick
Summary: The study evaluates the risks and losses of hydrogen storage in Danish North Sea chalk hydrocarbon reservoirs using PHREEQC. The results show that chemical/biochemical reactions may cause hydrogen loss, but co-injection of CO2 can inhibit calcite dissolution and achieve carbon neutrality for produced methane.
Article
Engineering, Petroleum
Quanshu Zeng, Zhiming Wang, Jinchao Wang, Qiqi Wanyan, Guosheng Ding, Kang Li
Summary: In this study, a 3D multiphysical coupled model was developed to investigate the rock-fluid interactions during the leaching of a horizontal salt cavern. The results suggest that salt rock dissolution, cavity expansion, and brine transport have influences on each other. The cavity can be divided into different regions, and the brine concentration distribution is relatively uniform.
Article
Chemistry, Physical
Mohammad Zamehrian, Behnam Sedaee
Summary: This study investigates the effects of fractures on underground hydrogen storage and production using numerical simulations. It finds that fractures can accelerate hydrogen production, resulting in higher recovery and purity. However, the purity of hydrogen produced from fractured reservoirs decreases more rapidly than a conventional one. The study also explores the effects of various factors on hydrogen storage, such as fracture system, condensate presence, and injection/production cycles, and identifies nitrogen and methane as promising cushion gas options for hydrogen production in different media.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Chaolin Wang, Yu Zhao, Rui Wu, Jing Bi, Kunpeng Zhang
Summary: This study conducted hydrogen adsorption and diffusion tests on shale samples at high pressure and elevated temperatures to assess its potential geo-storage capacity. The experimental results indicate that hydrogen can be adsorbed on shale surfaces and the adsorption capacity is positively correlated with pressure and negatively correlated with temperature. The diffusion coefficients of hydrogen are much larger than those of methane and both exhibit an increasing trend with temperature and a decreasing trend with pressure. This study provides fundamental data for hydrogen storage on shale reservoirs.
Article
Geosciences, Multidisciplinary
Lingping Zeng, Mohammad Sarmadivaleh, Ali Saeedi, Yongqiang Chen, Zhiqi Zhong, Quan Xie
Summary: This paper reviews the primary challenges associated with storage integrity in underground hydrogen storage within depleted gas reservoirs, including geochemical reactions, microbial activities, faults and fractures, and perspectives on hydrogen cycling. Additionally, a technical screening tool has been developed to provide practical solutions, and feasible methods and pathways to mitigate these risks are suggested.
EARTH-SCIENCE REVIEWS
(2023)
Article
Environmental Sciences
Navid Taghavi, Naresh Singhal, Wei-Qin Zhuang, Saeid Baroutian
Summary: This study investigated the biodegradation capability of microbial strains derived from soil, activated sludge, farm sludge, and worms' excreta on high-density polyethylene, polystyrene foam, polypropylene, and polyethylene terephthalate under unstimulated and stimulated conditions. The most effective plastic-degrading microbes were identified as Penicillium raperi, Aspergillus flavus, Penicillium glaucoroseum, and Pseudomonas sp. In the mixed condition, incubation of polyethylene with Aspergillus flavus showed the highest weight loss at 5.5%. Further analysis using Fourier Transform Infrared Spectroscopy revealed the formation of new functional groups on the treated plastics.
Article
Chemistry, Physical
Raj Kiran, Rajeev Upadhyay, Vinay Kumar Rajak, Saurabh Datta Gupta, Harharjot Pama
Summary: Hydrogen is being considered as an alternative energy source due to its zero greenhouse gas emissions. Geological storage, such as depleted reservoirs and salt caverns, shows great potential for underground hydrogen storage. A study was conducted to assess the viability of hydrogen storage in the Tapti-Daman formation in India. The results suggest that the site is suitable for storage with minimal chemical and microbiological losses, and an optimum production-injection scheme is recommended for efficient operation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Mirhasan Hosseini, Jalal Fahimpour, Muhammad Ali, Alireza Keshavarz, Stefan Iglauer
Summary: This study investigated the hydrogen wettability of calcite-rich formations and obtained important findings. Under ambient conditions, the system exhibited strong hydrophilicity, but showed intermediate hydrophilicity under high pressure. The increase in stearic acid concentration resulted in hydrogen affinity on the calcite surface. Additionally, the contact angle increased with salinity and tilting plate angle, while it decreased with temperature and surface roughness.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Energy & Fuels
Mohammad Zamehrian, Behnam Sedaee
Summary: This study investigated the effect of cushion gas on underground hydrogen storage and found that injecting nitrogen resulted in the highest hydrogen recovery and purity. Storing hydrogen in gas condensate reservoirs led to higher recovery, but most of the injected carbon dioxide was produced during hydrogen production.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Yingna Du, Chen Huang, Wei Jiang, Qiangwei Yan, Yongfei Li, Gang Chen
Summary: In this study, anionic surfactants modified hydrotalcite was used as a flow improver for crude oil under low-temperature conditions. The modified hydrotalcite showed a significant viscosity reduction effect on crude oil. The mechanism of the modified hydrotalcite on viscosity and pour point of crude oil was explored through characterization and analysis of the modified hydrotalcite and oil samples.
Article
Energy & Fuels
Mohammad Saeid Rostami, Mohammad Mehdi Khodaei
Summary: In this study, a hybrid structure, MIL-53(Al)@MWCNT, was synthesized by combining MIL-53(Al) particles and -COOH functionalized multi-walled carbon nanotube (MWCNT). The hybrid structure was then embedded in a polyethersulfone (PES) polymer matrix to prepare a mixed matrix membrane (MMM) for CO2/CH4 and CO2/N2 separation. The addition of MWCNTs prevented MIL-53(Al) aggregation, improved membrane mechanical properties, and enhanced gas separation efficiency.
Article
Energy & Fuels
Yunlong Li, Desheng Huang, Xiaomeng Dong, Daoyong Yang
Summary: This study develops theoretical and experimental techniques to determine the phase behavior and physical properties of DME/flue gas/water/heavy oil systems. Eight constant composition expansion (CCE) tests are conducted to obtain new experimental data. A thermodynamic model is used to accurately predict saturation pressure and swelling factors, as well as the phase boundaries of N2/heavy oil systems and DME/CO2/heavy oil systems, with high accuracy.
Article
Energy & Fuels
Morteza Afkhamipour, Ebad Seifi, Arash Esmaeili, Mohammad Shamsi, Tohid N. Borhani
Summary: Non-conventional amines are being researched worldwide to overcome the limitations of traditional amines like MEA and MDEA. Adequate process and thermodynamic models are crucial for understanding the applicability and performance of these amines in CO2 absorption, but studies on process modeling for these amines are limited. This study used rate-based modeling and Deshmukh-Mather method to model CO2 absorption by DETA solution in a packed column, validated the model with experimental data, and conducted a sensitivity analysis of mass transfer correlations. The study also compared the CO2 absorption efficiency of DETA solution with an ionic solvent [bmim]-[PF6] and highlighted the importance of finding optimum operational parameters for maximum absorption efficiency.
Article
Energy & Fuels
Arastoo Abdi, Mohamad Awarke, M. Reza Malayeri, Masoud Riazi
Summary: The utilization of smart water in EOR operations has gained attention, but more research is needed to understand the complex mechanisms involved. This study investigated the interfacial tension between smart water and crude oil, considering factors such as salt, pH, asphaltene type, and aged smart water. The results revealed that the hydration of ions in smart water plays a key role in its efficacy, with acidic and basic asphaltene acting as intrinsic surfactants. The pH also influenced the interfacial tension, and the aged smart water's interaction with crude oil depended on asphaltene type, salt, and salinity.
Article
Energy & Fuels
Dongao Zhu, Kun Zhu, Lixian Xu, Haiyan Huang, Jing He, Wenshuai Zhu, Huaming Li, Wei Jiang
Summary: In this study, cobalt-based metal-organic frameworks (Co-based MOFs) were used as supports and co-catalysts to confine the NHPI catalyst, solving the leaching issue. The NHPI@Co-MOF with carboxyl groups exhibited stronger acidity and facilitated the generation of active oxygen radicals O2•, resulting in enhanced catalytic activity. This research provides valuable insights into the selection of suitable organic linkers and broadens the research horizon of MOF hybrids in efficient oxidative desulfurization (ODS) applications.
Article
Energy & Fuels
Edwin G. Hoyos, Gloria Amo-Duodu, U. Gulsum Kiral, Laura Vargas-Estrada, Raquel Lebrero, Rail Munoz
Summary: This study investigated the impact of carbon-coated zero-valent nanoparticle concentration on photosynthetic biogas upgrading. The addition of nanoparticles significantly increased microalgae productivity and enhanced nitrogen and phosphorus assimilation. The presence of nanoparticles also improved the quality of biomethane produced.
Article
Energy & Fuels
Yao Xiao, Asma Leghari, Linfeng Liu, Fangchao Yu, Ming Gao, Lu Ding, Yu Yang, Xueli Chen, Xiaoyu Yan, Fuchen Wang
Summary: Iron is added as a flocculant in wastewater treatment and the hydrothermal carbonization (HTC) of sludge produces wastewater containing Fe. This study investigates the effect of aqueous phase (AP) recycling on hydrochar properties, iron evolution and environmental assessment during HTC of sludge. The results show that AP recycling process improves the dewatering performance of hydrochar and facilitates the recovery of Fe from the liquid phase.
Article
Energy & Fuels
He Liang, Tao Wang, Zhenmin Luo, Jianliang Yu, Weizhai Yi, Fangming Cheng, Jingyu Zhao, Xingqing Yan, Jun Deng, Jihao Shi
Summary: This study investigated the influence of inhibitors (carbon dioxide, nitrogen, and heptafluoropropane) on the lower flammability limit of hydrogen and determined the critical inhibitory concentration needed for complete suppression. The impact of inhibitors on explosive characteristics was evaluated, and the inhibitory mechanism was analyzed with chemical kinetics. The results showed that with the increase of inhibitor quantity, the lower flammability limit of hydrogen also increased. The research findings can contribute to the safe utilization of hydrogen energy.
Article
Energy & Fuels
Zonghui Liu, Zhongze Zhang, Yali Zhou, Ziling Wang, Mingyang Du, Zhe Wen, Bing Yan, Qingxiang Ma, Na Liu, Bing Xue
Summary: In this study, high-performance solid catalysts based on phosphotungstic acid (HPW) supported on Zr-SBA-15 were synthesized and evaluated for the one-pot conversion of furfural (FUR) to γ-valerolactone (GVL). The catalysts were characterized using various techniques, and the ratio of HPW and Zr was found to significantly affect the selectivity of GVL. The HPW/Zr-SBA-15 (2-4-15) catalyst exhibited the highest GVL yield (83%) under optimized reaction conditions, and it was determined that a balance between Bronsted acid sites (BAS) and Lewis acid sites (LAS) was crucial for achieving higher catalytic performance. The reaction parameters and catalyst stability were also investigated.
Article
Energy & Fuels
Michael Stoehr, Stephan Ruoff, Bastian Rauch, Wolfgang Meier, Patrick Le Clercq
Summary: As part of the global energy transition, an experimental study was conducted to understand the effects of different fuel properties on droplet vaporization for various conventional and alternative fuels. The study utilized a flow channel to measure the evolution of droplet diameters over time and distance. The results revealed the temperature-dependent effects of physical properties, such as boiling point, liquid density, and enthalpy of vaporization, and showed the complex interactions of preferential vaporization and temperature-dependent influences of physical properties for multi-component fuels.
Article
Energy & Fuels
Yuan Zhuang, Ruikang Wu, Xinyan Wang, Rui Zhai, Changyong Gao
Summary: Through experimental validation and optimization of the chemical kinetic model, it was found that methanol can accelerate the oxidation reaction of ammonia, and methanol can be rapidly oxidized at high concentration. HO2 was found to generate a significant amount of OH radicals, facilitating the oxidation of methanol and ammonia. Rating: 7.5/10.
Article
Energy & Fuels
Radwan M. EL-Zohairy, Ahmed S. Attia, A. S. Huzayyin, Ahmed I. EL-Seesy
Summary: This paper presents a lab-scale experimental study on the impact of diethyl ether (DEE) as an additive to waste cooking oil biodiesel with Jet A-1 on combustion and emission features of a swirl-stabilized premixed flame. The addition of DEE to biodiesel significantly affects the flame temperature distribution and emissions. The W20D20 blend of DEE, biodiesel, and Jet A-1 shows similar flame temperature distribution to Jet A-1 and significantly reduces UHC, CO, and NOx emissions compared to Jet A-1.
Article
Energy & Fuels
Jiang Bian, Ziyuan Zhao, Yang Liu, Ran Cheng, Xuerui Zang, Xuewen Cao
Summary: This study presents a novel method for ammonia separation using supersonic flow and develops a mathematical model to investigate the condensation phenomenon. The results demonstrate that the L-P nucleation model accurately characterizes the nucleation process of ammonia at low temperatures. Numerical simulations also show that increasing pressure and concentration can enhance ammonia condensation efficiency.
Article
Energy & Fuels
Shiyuan Pan, Xiaodan Shi, Beibei Dong, Jan Skvaril, Haoran Zhang, Yongtu Liang, Hailong Li
Summary: Integrating CO2 capture with biomass-fired combined heat and power (bio-CHP) plants is a promising method for achieving negative emissions. This study develops a reliable data-driven model based on the Transformer architecture to predict the flowrate and CO2 concentration of flue gas in real time. The model validation shows high prediction accuracy, and the potential impact of meteorological parameters on model accuracy is assessed. The results demonstrate that the Transformer model outperforms other models and using near-infrared spectral data as input features improves the prediction accuracy.