Article
Chemistry, Physical
Zhenyong Yin, Hao Xu, Yanpeng Chen, Tiantian Zhao, Jingjie Wu
Summary: Research on hydrogen production from coal gasification focuses on the formation of CO and H2 from coal and water vapor. Pure oxygen-steam gasification is used to improve gasification efficiency. The two-step gasification process involving coal pyrolysis and char gasification is an efficient method for hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
Huan Liu, Wei Guo, Shuqin Liu
Summary: This study compares the techno-economic performance of UCG-H2 and SCG-H2, and finds that UCG-H2 has lower investment and cost advantages, especially without CCS. However, the economic feasibility of UCG-H2 is challenged when hydrogen market prices are low.
Article
Energy & Fuels
Krzysztof Kapusta
Summary: Two experimental simulations of underground coal gasification processes were conducted using large bulk samples of lignites, and the results showed that the physicochemical properties of the lignite used considerably affect the in situ gasification process. Lignites with lower moisture content and higher energy density demonstrated higher process efficiency compared to lignites with higher moisture content.
Article
Energy & Fuels
Liangliang Jiang, Shanshan Chen, Yanpeng Chen, Zhangxin Chen, Fenjin Sun, Xiaohu Dong, Keliu Wu
Summary: Underground coal gasification (UCG) has the prospect of tapping deep coal seams and reducing carbon emissions. However, there is limited experience in deep UCG development. This study constructed a large-scale 3D UCG model with an improved method and considered the effect of double-diffusive natural convection. The results showed that the improved method was beneficial for the development of UCG cavities in deep coal seams, and double-diffusive natural convection played an important role in cavity development and overall UCG performance.
Article
Materials Science, Ceramics
Honggang Sun, Hongxia Li, Keming Geng, Shixian Zhao, Yihao Du, Shuangzhi Yan
Summary: Two types of high chromia bricks, one with phosphate and one without phosphate, were analyzed throughout their service life. The effect of phosphate on the microstructure and phase composition of the refractory sections was studied. It was found that the presence of phosphate resulted in the formation of a dense phosphate enrichment layer, which reduced damage caused by slag penetration, leading to lower wear rates and longer lifespan.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Thermodynamics
Lin Xin, Mingyu An, Mingze Feng, Kaixuan Li, Weimin Cheng, Weitao Liu, Xiangming Hu, Zhigang Wang, Limin Han
Summary: This study simulated the pyrolysis process of lump coal in UCG tunnel, showing that with the increase of final pyrolysis temperature, the functional group content of coal samples decreased and the structure became more disordered.
Article
Green & Sustainable Science & Technology
Renato Zagorscak, Richard Metcalfe, Laura Limer, Hywel Thomas, Ni An, Alex Bond, Sarah Watson
Summary: This paper presents a flexible risk assessment methodology for Underground Coal Gasification (UCG) technology, which evaluates potential risks by analyzing various scenarios. The application of a numerical model suggests that the risks of groundwater contamination from a UCG site should be very low if the site is developed and operated appropriately.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Fa-qiang Su, Tao Zhang, Jun-bo Wu, Qi-chao Deng, Akihiro Hamanaka, Yi-he Yu, Meng-jia Dai, Xiao-long He, Jun-nan Yang
Summary: In this paper, UCG simulation experiments were conducted to investigate the effects of the gasification agent ratio on the composition and calorific value of the product gas. An energy recovery evaluation method and an evaluation model of the underground coal gasification temperature field were established. The results showed that increasing the oxygen concentration improved the calorific value of the produced gas and the energy recovery rate.
Article
Energy & Fuels
Zhongfa Hu, Yangfan Peng, Fenjin Sun, Shanshan Chen, Yuegui Zhou
Summary: Underground coal gasification is a promising technology for converting coal resources into high-quality synthesis gas with low cost. The study found that gasification pressure and temperature have significant effects on the composition of synthesis gas, and increasing the oxygen/steam ratio enhances the contents of H-2 and CH4, as well as the low heating value of the synthesis gas.
Article
Green & Sustainable Science & Technology
Liangliang Jiang, Zhangxin Chen, S. M. Farouq Ali, Jiansheng Zhang, Yanpeng Chen, Shanshan Chen
Summary: Underground coal gasification (UCG) has great potential in extracting energy from deep coal seams with low environmental impact. CO2 storage in post-UCG cavities was found to be stable and effective. The findings will promote the application of UCG in deep coal seams worldwide and facilitate the transition of the coal industry towards carbon-consciousness.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Wen-gang Huang, Zuo-tang Wang, Tian-hong Duan, Lin Xin
Summary: The pilot project integrating UCG with power generation in the abandoned mine Ankou aimed to optimize the gasification process, with industrial tests revealing that changes in oxygen concentration significantly affected syngas production. Increasing oxygen concentration led to higher H-2 content, combustible components, calorific value of syngas, and gasification efficiency after an initial drop. Additionally, oxygen-enriched gasification trials showed advantages in air consumption, coal consumption, and calorific value compared to oxygen-enriched steam gasification tests.
Article
Energy & Fuels
Hao Chen, Yong Qin, Yanpeng Chen, Zhen Dong, Junjie Xue, Shanshan Chen, Mengyuan Zhang, Yufeng Zhao
Summary: This study investigates the effect of oxygen content in oxygen-enriched carbon dioxide gasification agents on gasification experiment results. The results show that as the oxygen content increases, the CO and H-2 in the combustible gas increase gradually, as does the calorific value. Although the product formation rate and gas production per unit mass of coal fluctuate, the coal consumption rate remains relatively stable.
Article
Energy & Fuels
Akihiro Hamanaka, Fa-qiang Su, Ken-ichi Itakura, Kazuhiro Takahashi, Jun-ichi Kodama, Gota Deguchi
Summary: This study discusses the application of a coaxial UCG system with a horizontal hole through model experiments, evaluating the impact of coal quality on the temperature distribution of the gasification area and product gas quality.
Article
Chemistry, Physical
Huan Liu, Shuqin Liu
Summary: This study compares energy consumption and greenhouse gas emissions between underground coal gasification (UCG)-based hydrogen production (UCG-H-2) and surface coal gasification (SCG)-based hydrogen production (SCG-H-2) using life cycle assessment. Results show UCG-H-2 has significant energy saving advantage, and 80% capture rate can achieve a balance between energy consumption and emissions. Scenario analysis suggests UCG substitution for hydrogen production can reduce energy consumption significantly.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Green & Sustainable Science & Technology
Mingze Feng, Lin Xin, Zhigang Wang, Kaixuan Li, Jing Wu, Jiaze Li, Weimin Cheng, Bowei Wang
Summary: UCG technology, an innovative coal mining method, has not yet been widely applied due to complex geological conditions and control issues. The importance of gas tightness control in UCG and the challenges in maintaining it were discussed in this paper.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Review
Computer Science, Artificial Intelligence
Aniket Nagargoje, Pavan Kumar Kankar, Prashant Kumar Jain, Puneet Tandon
Summary: This study reviews the extant literature relevant to incremental forming (IF) and highlights the application of artificial intelligence methods in solving IF-related problems. Various AI techniques have been used, and a few toolpath strategies have been developed using AI-based techniques.
JOURNAL OF INTELLIGENT MANUFACTURING
(2023)
Article
Chemistry, Inorganic & Nuclear
A. Ganesh, T. Sivakumar, P. Venkateswari, G. Sankar, R. Venkatesh
Summary: This study focuses on the fabrication of sweet potato-derived carbon framework with nanosheet form of Co3O4 nanoparticles using the low-temperature solution grown technique. The results showed that the nanoparticles were uniformly distributed on the surface of sweet potato derived carbon frame work (SPCF). The SPCF derived Co3O4 electrodes exhibited enhanced capacitance and good cycling stability.
JOURNAL OF CLUSTER SCIENCE
(2023)
Article
Neuroimaging
Fouzi Bala, Benjamin Beland, Eva Mistry, Mohammed A. Almekhlafi, Mayank Goyal, Aravind Ganesh
Summary: Observational studies suggest that EVT is more effective in achieving return to baseline mRS compared to medical management or patients without pre-morbid disability, although at the cost of higher mortality. These findings argue against routine exclusion of patients with pre-morbid disability from EVT and warrant validation through randomized trials.
JOURNAL OF NEUROINTERVENTIONAL SURGERY
(2023)
Article
Neuroimaging
Faysal Benali, Manon Kappelhof, Johanna Ospel, Aravind Ganesh, Rosalie McDonough, Alida A. Postma, Robert-Jan Berend Goldhoorn, Charles B. L. M. Majoie, Ido van den Wijngaard, Hester F. Lingsma, Jan Albert Vos, Robert J. van Oostenbrugge, Wim H. van Zwam, Mayank Goyal
Summary: This study investigated the safety and benefit of endovascular treatment (EVT) in pre-stroke patients with modified Rankin Scale score (mRS) 3. The findings showed that patients with successful reperfusion after EVT had improved outcomes, with higher rates of returning to baseline functional state or improvement and lower mortality rates.
JOURNAL OF NEUROINTERVENTIONAL SURGERY
(2023)
Article
Clinical Neurology
Johanna Maria Ospel, Rosalie McDonough, Aravind Ganesh, Arshia Sehgal, Manon Kappelhof, Nima Kashani, Karin Klijn, Michael Hill, Jeffrey Saver, Mayank Goyal
Summary: The lack of funding in neurovascular research is a major problem, with high competitiveness, time-consuming funding processes, and excessive administrative requirements being the key obstacles to obtaining funding. Traditional funding agencies are perceived to be the most capable of closing the funding gap.
INTERVENTIONAL NEURORADIOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Sagar Kailas Gawali, Girish Chandra Pandey, Prashant Kumar Jain
Summary: This study investigates the melt flow rate (MFR) of ABS composite by varying the proportion of graphite (Gr) powder and examines its suitability for FFF process. The results show that extrusion temperature is the most influential parameter and the error in the experimental study is minimal. The optimal process parameters combination is determined through a signal-to-noise (S/N) ratio analysis.
ADVANCES IN MATERIALS AND PROCESSING TECHNOLOGIES
(2023)
Article
Engineering, Biomedical
Mohammad Aftab Alam Ansari, Prashant Kumar Jain, Himansu Sekhar Nanda
Summary: In this study, a hybrid polymer-ceramic scaffold was prepared using 3D printing technology, combining PLA and CaS materials. The scaffolds showed good thermal stability, mechanical properties, and porosity, making them suitable for tissue engineering applications.
JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
(2023)
Article
Engineering, Chemical
Sagar Kailas Gawali, Prashant Kumar Jain
Summary: This research investigates the application of additively manufactured polymeric products in outdoor environments, as well as the study of a novel weather-resistant polymer ASA. By optimizing process parameters, the strength of ASA specimens was enhanced, and a regression model was developed to explore the correlation between process parameters and strength.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Engineering, Mechanical
Nidhi Dixit, Prashant K. K. Jain
Summary: The present study examines the impact of three different process parameters, including extrusion temperature, layer thickness, and build orientation, on the mechanical properties of thermoplastic polyurethane (TPU) material printed through the fused filament fabrication (FFF) process. Taguchi orthogonal array and grey relational analysis are used to determine the optimal combination of these parameters. It was found that an extrusion temperature of 200 degrees C, a layer thickness of 0.2 mm, and a build orientation of 0 degrees yielded the highest mechanical properties for TPU parts. A body-centred cubic lattice structure was successfully printed as a case study to validate the suitability of the investigated process parameters for fabricating complex flexible parts using the FFF process.
IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY-TRANSACTIONS OF MECHANICAL ENGINEERING
(2023)
Article
Engineering, Manufacturing
Sagar Kailas Gawali, Girish Chandra Pandey, Arpit Bajpai, Prashant Kumar Jain
Summary: Additive manufacturing, also known as 3D printing, is transforming the manufacturing industry with rapid product development. However, the cost and challenges of manufacturing large-sized parts using this technology are significant. A CNC-assisted material extrusion-based additive manufacturing system has been developed to address these issues, allowing for the fabrication of large-sized parts on a CNC machine platform. However, this system also introduces new issues and challenges, such as the need for new process parameters and changes to the properties associated with the fused filament fabrication process.
INTERNATIONAL JOURNAL OF INTERACTIVE DESIGN AND MANUFACTURING - IJIDEM
(2023)
Article
Materials Science, Multidisciplinary
Rahul Kumar Choubey, Prashant Kumar Jain
Summary: This article investigates the use of induction heating as a heat source in extrusion-based metal additive manufacturing (EMAM) with metal wire feedstock. Through simulation and experimental comparison, the optimal standoff distance for printing aluminum is determined.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2023)
Article
Engineering, Manufacturing
Nidhi Dixit, Prashant. K. K. Jain
Summary: Chemical post-processing can significantly improve the surface quality and dimensional accuracy of flexible lattice structures, although it may slightly reduce their compressive strength.
3D PRINTING AND ADDITIVE MANUFACTURING
(2023)
Article
Engineering, Chemical
Pushkal Badoniya, Manu Srivastava, Prashant K. Jain, Sandeep Rathee
Summary: This study investigates the influence of different parameters on bead profiles in the wire arc additive manufacturing (WAAM) process, specifically focusing on ER70S-6 low-carbon steel. The results show that an increase in wire feed speed and voltage leads to a significant increase in bead width, while traverse speed and gas flow rate have a minimal impact on bead width. Moreover, an increase in wire feed speed significantly enhances bead height, while voltage and traverse speed reduce bead height.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2023)
Proceedings Paper
Computer Science, Artificial Intelligence
S. Sumathi, A. Balaji Ganesh
Summary: This paper introduces a method for encrypting and classifying personal information, using AES and chaotic logistic mapping for signal encryption, CNN for feature extraction, and SVM for data classification. Experimental results show that the proposed method achieves significantly better classification accuracy compared to traditional algorithms.
SOFT COMPUTING FOR SECURITY APPLICATIONS, ICSCS 2022
(2023)
Article
Engineering, Mechanical
Mohammad Taufik, Prashant K. Jain
Summary: This study proposes a new technique to provide uniform post-processing allowance by considering the effects of oversized, undersize, mixed size, and equal size situations. New algorithms have been developed to identify shape deviation and provide uniform post-processing allowance throughout the part.
AUSTRALIAN JOURNAL OF MECHANICAL ENGINEERING
(2023)
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.