Article
Energy & Fuels
Toto Hardianto, Adrian Rizqi Irhamna, Pandji Prawisudha, Firman Bagja Juangsa
Summary: Briquetting is necessary for upgrading low-rank coal, as it improves the energy density, handling, and transportability of solid fuel. This study investigated the binderless briquetting process at room temperature, and found that moisture acts as a lubricant during compaction, facilitating particle interlocking and increasing density. However, changes in moisture content after compaction can lead to swelling and shrinkage in the particles, resulting in decreased briquette strength.
INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION
(2023)
Article
Energy & Fuels
Luhui Cai, Xiaodong Yu, Yuemin Zhao, Gongmin Li, Zhenfu Luo
Summary: The calorific value of low-grade lignite can be effectively improved through drying and dehydration, and the utilization value of pulverized coal resources can be increased through coal powder briquetting.
INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION
(2023)
Article
Multidisciplinary Sciences
Feiyan Zhang, Chen Niu, Ying Han
Summary: The evolution of the strength characteristics of fluid-bearing briquette coal and raw coal is studied. The strength characteristics, instability failure characteristics, and acoustic emission characteristics of raw coal and briquette coal under uniaxial and triaxial compression are analyzed in detail. The influence of the water content and pore pressure on the strength characteristics of class III-V raw coal and briquette coal is further studied.
SCIENTIFIC REPORTS
(2023)
Article
Energy & Fuels
Teng Li, Cai-Fang Wu, Zi-Wei Wang
Summary: The pore structure characteristics of low-rank coal show variations under different pretreatment temperatures, with total pore volume changing accordingly. Ash content in the coal plays a role in protecting the coal skeleton, while pore collapse mainly occurs in mesopores with smaller apertures.
Article
Environmental Sciences
Jingyu Jiang, Ke Zhao, Yuanping Cheng, Shaojie Zheng, Shuo Zhang, Ran Wang
Summary: The study found that as the thickness of the sill increases, the thermal evolution temperature of the coal seam increases, the required time prolongs, and the final retention temperature after cooling down also increases. The closer the coal seam is to magma, the higher the maximum temperature it can reach and the longer the duration of the maximum temperature. An increase in coal moisture content leads to an increase in thermal conductivity, accelerating heat transfer from the coal seam and transferring more heat to distant locations in the same time.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Energy & Fuels
Xin Zhang, Jun Zhang, Rui Guo, Qiang Xiao, Yawei Feng, Huan Cheng
Summary: Utilization of high-reactivity coke is effective in achieving low carbon blast furnace. A method for preparing high-reactivity metallurgical coke using low-rank coal is proposed. The coke prepared has high compressive strength and exhibits high reaction rate and strength after iso-solution loss. Various characteristics of the coke were investigated, such as reaction rate, microcrystalline structure, optical structure, porosity, pore distribution, and mineral composition.
Article
Engineering, Chemical
Yuting Zhuo, Zhouzun Xie, Yansong Shen
Summary: An integrated numerical model was developed to investigate the effect of briquette shape on carbonisation performance of low rank coal briquettes. Simulation results showed that briquettes with different shapes exhibited different packing statuses during carbonisation, with half-ellipsoidal briquettes demonstrating the best carbonisation performance.
Article
Energy & Fuels
Qingqing Gan, Jiang Xu, Shoujian Peng, Fazhi Yan, Ruifang Wang, Guoliang Cai
Summary: In this study, the influence of heating rate on the structure, pore, and carbon molecular structure of briquette coal (BC) was examined using various analytical methods. Results showed that a heating rate of 5 degrees C/min is suitable for BC preparation, providing an excellent alternative raw material for large-scale physical simulation experiments.
Article
Geochemistry & Geophysics
Haidong Wang, Yang Tao, Deyue Wang, Xin Sun, Jiahui Gao
Summary: The study demonstrates that the mechanical properties of water-bearing coal vary under different moisture content conditions, including strain strengthening characteristics and linear decrease in internal friction angle. An appropriate moisture content can enhance the consolidation effect of coal body, which is beneficial for preventing coal and gas outburst.
Article
Green & Sustainable Science & Technology
Fu-Rong Xiu, Jiali Wang, Zhiqi Song, Yingying Qi, Qingyun Bai, Siyi Wang, Xinyue Lei, Ruiqi Yang, Zihan Gao
Summary: With the rapid development of the express industry, the consumption of waste plastic express bags has been increasing, creating pressure on waste management. Upgrading low-rank coal is a reliable energy solution in China. The synergistic co-liquefaction of waste plastic express bags and low-rank coal in a supercritical water-ethanol system has been developed for effective waste treatment and resource upgrading.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Energy & Fuels
Jun Zhao, Hong Liu, Haochen Zhang, Xiaolin Song, Haibin Zuo, Guangwei Wang, Zhigao Xu, Ming Wu, Zhenyue Zhang, Ru'an Chi
Summary: This study focuses on the utilization of low-rank coal and biomass residue in the coking process. Hypercoal, produced through co-thermal extraction, was investigated as a component in the coking process. The study found that the inclusion of 15% hypercoal in the coal blend resulted in improved compressive and drum strengths of the coke. Furthermore, the high vitrinite content in hypercoal contributed to the formation of mosaics within the coke, enhancing its cold strength.
Article
Green & Sustainable Science & Technology
Anwar Ameen Hezam Saeed, Noorfidza Yub Harun, Muhammad Roil Bilad, Muhammad T. Afzal, Ashak Mahmud Parvez, Farah Amelia Shahirah Roslan, Syahirah Abdul Rahim, Vimmal Desiga Vinayagam, Haruna Kolawole Afolabi
Summary: The study demonstrated that controlling moisture content is an effective way to enhance the quality of briquettes made from rice husk, with the 14% moisture content briquette showing the highest calorific value and desirable morphology.
Article
Metallurgy & Metallurgical Engineering
Ritwik Das, Manas Kumar Mondal, Susanta Pramanik
Summary: This study focuses on the preparation of composite briquettes using blast furnace flue dust and pure iron oxide fines mixed with different binders. The effect of fly ash quantity, particle size, briquetting pressure, and curing temperature on the strength of the briquettes was also investigated.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2023)
Article
Chemistry, Multidisciplinary
Haihai Hou, Xiangqin Huang, Longyi Shao, Guodong Liang
Summary: This study proposes a new method to predict the petrology and methane adsorption capacity of high-volatile bituminous coals using P-wave velocity. The results show that P-wave velocity is correlated with coal density, porosity, and maceral content, and can be used to predict variations in coal quality and methane adsorption capacity.
Article
Geochemistry & Geophysics
Qiangling Yao, Liqiang Yu, Ning Chen, Weinan Wang, Qiang Xu
Summary: The study found that when the water content is high and the strain rate is low, the compaction stage of coal samples will account for the majority of the stress-strain curve, while the elastic stage only accounts for a small portion; the dynamic compressive strength and elastic modulus increase exponentially and logarithmically with strain rate, showing a significant positive correlation; under the same impact load, samples with higher water content fail more rapidly, and failure is exacerbated by the propagation of parallel cracks to staggered cracks.
Review
Chemistry, Applied
Joy Esohe Omoriyekomwan, Arash Tahmasebi, Jinxiao Dou, Rou Wang, Jianglong Yu
Summary: The latest advancements in synthesizing carbon nanotubes and nanofibers via microwave-assisted pyrolysis show promising prospects for large-scale production of carbon nanomaterials, fine chemicals, and fuel gases through selected biomass feedstock and controlled reaction parameters.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Applied
Jian Zhang, Arash Tahmasebi, Joy Esohe Omoriyekomwan, Jianglong Yu
Summary: The biochar-CNT-NiO composite material shows promising applications as an anode material in lithium-ion batteries, with higher reversible capacity and excellent discharge rate performance. The presence of CNTs helps mitigate the volume change of NiO during cycles and accelerates electron transfer.
FUEL PROCESSING TECHNOLOGY
(2021)
Review
Energy & Fuels
Ongho Kim, Soonho Lee, Arash Tahmasebi, Chung-Hwan Jeon, Jianglong Yu
Summary: HELE coal-fired power plant technologies have high efficiency and low emissions, reducing CO2 emissions per unit energy generation. Extensive numerical modeling efforts have increased our understanding of technical issues in HELE boilers, including combustion optimization, ash deposition, and material problems. Further research is required to optimize coal combustion processes and address technical challenges in advanced HELE power plant operations.
Article
Materials Science, Multidisciplinary
Joy Esohe Omoriyekomwan, Arash Tahmasebi, Jinxiao Dou, Lu Tian, Jianglong Yu
Summary: This study presents a sustainable and cost-effective method to synthesize SiC nanowhiskers using cornstalk cellulose char under microwave heating, optimizing the process and gaining insights into the formation and growth mechanism of the nanowhiskers. Higher reaction temperatures promote the growth of SiC nanowhiskers, with metallic species found in biochar catalyzing their formation and growth.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Electrochemistry
Salman Khoshk Rish, Arash Tahmasebi, Rou Wang, Jinxiao Dou, Jianglong Yu
Summary: The 3D multilayer graphene nanostructures (3DMGS) synthesized through a low-cost and environmentally friendly approach exhibit outstanding electrochemical properties. The unique physical and chemical structure of 3DMGS, with high specific surface area and hierarchical porous structure, provide ample lithium-ion diffusion sites and facilitate fast ion transportation. As an anode material for Li-ion batteries, 3DMGS demonstrate excellent rate capability and cycling stability, along with ultrahigh specific capacity.
ELECTROCHIMICA ACTA
(2021)
Review
Engineering, Chemical
Soonho Lee, Jongho Kim, Arash Tahmasebi, Chung-Hwan Jeon, Yangxian Liu, Jianaglong Yu
Summary: HELE technologies play a crucial role in the application and development of supercritical, ultrasupercritical, and advanced ultrasupercritical coal-fired power plants, but there are still technical challenges.
REVIEWS IN CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Faridul Islam, Arash Tahmasebi, Rou Wang, Jianglong Yu
Summary: Metal-supported few-layer graphene (FLG) was synthesized through microwave-assisted catalytic graphitization by converting bituminous coal to FLG over Fe catalysts at 1300 degrees C, resulting in the highest degree of graphitization and a well-developed pore structure. The microwave-irradiation temperature and holding time played critical roles in the synthesis of metal-supported FLG, with 3-6 layers of graphene nanosheets observed in the fabricated samples. Additionally, the presence of few-layer graphene structure was confirmed through the observation of the 2D Raman band at 2700 cm(-1).
Article
Materials Science, Multidisciplinary
Salman Khoshk Rish, Arash Tahmasebi, Rou Wang, Jinxiao Dou, Jianglong Yu
Summary: The catalytic graphitization of biomass-based carbon has been used to synthesize graphene nanostructures with exceptional electrochemical properties. Understanding the impact of different parameters on the low-temperature catalytic graphitization of activated carbon is crucial for improving the structural properties of the resulting material. Experimental results indicate that dissolution-precipitation and metal-induced graphitization are the primary mechanisms under which graphitized carbon is formed.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Chemistry, Physical
Jongho Kim, Jianglong Yu, Soonho Lee, Arash Tahmasebi, Chung-Hwan Jeon, John Lucas
Summary: This paper reviews the progress and applications of catalytic hydrogen combustion technology, including catalyst development, reactor types, operating parameters, and reaction mechanisms. Future research directions will focus on further exploring the design of catalytic reactors for CHC.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Faridul Islam, Arash Tahmasebi, Behdad Moghtaderi, Jianglong Yu
Summary: This study focused on synthesizing few-layer graphene (FLG) from bituminous coal through a catalytic process under microwave heat treatment. The research indicated that the catalyst percentages affected the structural change of FLG composite materials, and the catalyst loaded samples showed homogeneous distribution and indicated few-layer graphene sheets.
Article
Energy & Fuels
Yixin Chen, Soonho Lee, Arash Tahmasebi, Mengjie Liu, Tingting Zhang, Jin Bai, Lu Tian, Jianglong Yu
Summary: This study investigated the impact of parent coal properties on the evolution of carbon structures during the coking process. The results showed that coal undergoes crosslinking reactions, condensation, and re-polymerization, forming carbon-bearing crosslinking structures. Higher rank coals produced more stable radicals in the plastic phase, while lower rank coals formed oxygen-bearing cross-links at early plastic stages.
Article
Chemistry, Analytical
Rou Wang, Salman Khoshk Rish, Jialong Wang, Soonho Lee, Arash Tahmasebi, Jianglong Yu
Summary: This study explores the use of Victorian brown coal for carbon foam preparation and its application in LIBs, showing that tailored treatment methods can significantly enhance battery performance.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Multidisciplinary
Joy Esohe Omoriyekomwan, Arash Tahmasebi, Jian Zhang, Jianglong Yu
Summary: This study presents a new method for synthesizing super-long carbon nanotubes (SL-CNTs) from cellulose using microwave treatment. The length and morphology of the CNTs were investigated by adjusting the treatment temperature. The results showed that the microwave treatment temperature had a significant impact on the growth of CNTs, and a growth mechanism was proposed.
Article
Energy & Fuels
Apsara S. Jayasekara, Brody Brooks, Karen Steel, Pramod Koshy, Kim Hockings, Arash Tahmasebi
Summary: The steel industry is responsible for about 7% of global greenhouse gas emissions, and replacing coal with microalgae biomass for coke production can have a positive impact on reducing CO2 emissions.
Article
Energy & Fuels
Jongho Kim, Arash Tahmasebi, Salman Khoshk Rish, Chung-Hwan Jeon, Jianglong Yu
Summary: This study compares the performance of Pd-Cu/Al2O3 and Cu/Al2O3 catalysts in catalytic hydrogen combustion. The reactivity and stability, as well as the reaction mechanisms, were analyzed using various analytical techniques. It was found that Cu/Al2O3 achieved comparable hydrogen conversion to that of Pd-Cu/Al2O3 at temperatures above 500 degrees C. The rate-limiting steps were different for the two catalysts, with metal-oxygen bonding being the main factor for Pd-Cu/Al2O3 and breaking of metal-oxygen bonding for Cu/Al2O3.
JOURNAL OF THE ENERGY INSTITUTE
(2023)
