Article
Thermodynamics
Alessio Pappa, Marie Cordier, Pierre Benard, Laurent Bricteux, Ward De Paepe
Summary: This paper investigates the combustion performance of micro gas turbines under diluted conditions. By utilizing cycle humidification and exhaust gas recirculation, stable and complete combustion is achieved in diluted cases with water and/or CO2.
Article
Energy & Fuels
Changming Gong, Xiankai Si, Yang Wang, Fenghua Liu
Summary: The experimental results indicate that the addition of CO2 in the intake charge of a GDI engine has a positive effect on combustion performance and emissions compared to adding EGR, with a more significant impact at low loads.
Article
Engineering, Marine
Qiuwan Shen, Zicheng Shao, Shian Li, Guogang Yang, Jinliang Yuan, Xinxiang Pan
Summary: The study demonstrates that the B-site doped perovskite BaCo0.8Al0.2O3-δ exhibits high adsorption performance, making it suitable for reducing CO2 emissions from marine exhaust. The optimal operating parameters are determined to be 850 degrees C for adsorption/desorption temperature, 200 mL/min for CO2 volume flow rate, 100% CO2 partial pressure, and 30 minutes for absorption time. Multiple cycle results indicate that the BaCo0.8Al0.2O3-δ sorbent has high reactivity and cyclic stability.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Changming Gong, Xiankai Si, Fenghua Liu
Summary: The study found that actual EGR has a greater impact on combustion parameters, while inert gas in EGR exacerbates combustion. Spark timing has little effect on emissions at low load.
Article
Energy & Fuels
Yuhua Liu, Jingzhang Liu, Qinggang Lyu, Jianguo Zhu, Fei Pan
Summary: In this study, the microstructure changes of fuel during preheating process were analyzed to reveal the impact on particle change behavior during combustion. It was found that during preheating, the main forms of N, C, and O elements in coal were pyrrole, hydrocarbon, and carbon-oxygen single bond respectively.
Article
Chemistry, Physical
Mathanraj Vijayaragavan, Balaji Subramanian, S. Sudhakar, L. Natrayan
Summary: This study investigates the performance, emission, and combustion characteristics of a compression ignition engine operating on dual fuel mode with simarouba oil, hydrogen, and exhaust gas recirculation (EGR). The results show that the introduction of hydrogen and EGR can improve the engine efficiency and reduce emissions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Chemical
A. Kort, F. -x. Ouf, R. Lakhmi, T. Gelain, J. Malet, P. Breuil, J. -p. Viricelle
Summary: Fires are a major hazard in industrial facilities handling or manufacturing hazardous materials. To better understand the transport and deposition of emitted particles and their impact on safety devices, an innovative method for quantifying soot has been developed. This method quantifies gases emitted during sensor surface regeneration and has a higher detection limit than previous methods. Feasibility has been demonstrated for two types of soot, and a prediction curve for deposited masses has been proposed. The applicability of this method to realistic industrial fire situations has been verified based on observed deposition masses.
JOURNAL OF AEROSOL SCIENCE
(2022)
Article
Energy & Fuels
Blazej Gaze, Bernard Knutel, Krzysztof Zajac, Mateusz Jajczyk, Przemyslaw Bukowski
Summary: The paper presents research findings on exhaust gases from landfill gas combustion, specifically focusing on the effects of exhaust gas purification technologies on the quality of exhaust gases and particulate matter content. The results provide valuable insights for landfill owners in meeting emission standards and avoiding fines.
Article
Energy & Fuels
Dhinesh Balasubramanian, Anh Tuan Hoang, Inbanaathan Papla Venugopal, Arunprasad Shanmugam, Jianbing Gao, Tanakorn Wongwuttanasatian
Summary: With the increasing global concern on diesel engine exhaust emissions, biofuels serve as a better alternative for compression ignition engines, but may lead to increased nitrogen oxide emissions which are harmful to human health. Research found that B20 blend fuel is the most effective in reducing emissions, particularly with a maximum reduction of unburned hydrocarbon, carbon monoxide, smoke, and carbon dioxide emissions. Increasing exhaust gas recirculation (EGR) rates can effectively reduce NOx emissions but may result in higher emissions of other pollutants.
Article
Thermodynamics
Chris A. Van Roekel, David T. Montgomery, Jaswinder Singh, Daniel B. Olsen
Summary: This study investigates the effects of implementing a dedicated exhaust gas recirculation system on an industrial natural gas engine, showing reductions in NO(x) and CO emissions, as well as improvements in exhaust temperatures, but also potentially resulting in significant differences in combustion between cylinders.
INTERNATIONAL JOURNAL OF ENGINE RESEARCH
(2021)
Article
Chemistry, Analytical
Shujin Li, Bofan Zhao, Alejo Aguirre, Yu Wang, Ruoxi Li, Sisi Yang, Indu Aravind, Zhi Cai, Ran Chen, Lasse Jensen, Stephen B. Cronin
Summary: In this study, in situ surface-enhanced Raman scattering (SERS) spectroscopy and density functional theory (DFT) calculations were used to investigate the removal of NO and SO2 under wet plasma conditions. The results showed that wet plasma increases the reactivity by generating OH radicals. Combining experimental and DFT-calculated spectra provided a detailed understanding of the chemical reaction pathways and surface interaction chemistry.
ANALYTICAL CHEMISTRY
(2021)
Article
Energy & Fuels
Maxime Jean, Pascal Granier, Thomas Leroy
Summary: Minimizing fuel consumption of passenger car vehicles can be achieved through hybridization of powertrain and innovative engine technologies. This paper proposes a combustion stability feedback control method using in-cylinder pressure sensors and adjusts the EGR target based on a stability indicator, resulting in minimized fuel consumption.
Article
Engineering, Aerospace
Chengfei Tao, Hao Zhou
Summary: The study evaluated the effects of different gas mediums on combustion instability and NOx emissions control, with CO2 showing the best performance in both aspects. It was found that microjets can effectively reduce combustion instability, lower NOx emissions, and impact flame length.
AEROSPACE SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Tine Seljak, Urban Zvar Baskovic, Ziga Rosec, Tomaz Katrasnik
Summary: This paper presents a novel approach for combustion control in gas turbines and burners by injecting inert components in the spray core. The method can reduce NO and PM emissions and improve fuel flexibility. Experimental results show significant advantages compared to traditional methods.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Energy & Fuels
Xiaohuan Zhao, Jiaqiang E, Gaoliang Liao, Feng Zhang, Jingwei Chen, Yuanwang Deng
Summary: The study proposes a 3D soot continuous regeneration combustion model under exhaust gas heavy load using UDF function in FLUENT software, investigating 3 different models for simulation study with EDC model showing advantages in terms of turbulent kinetic energy and temperature. The results suggest that EDC model is more suitable for stable laminar flow state conditions.
Article
Chemistry, Physical
Y. M. Hunge, A. A. Yadav, Seok-Won Kang, Hyunmin Kim
Summary: This study prepared MoS2/TiO2 composites via a hydrothermal route and investigated their photocatalytic degradation performance of TC. The results showed that MoS2/TiO2 composites exhibited superior photodegradation activity towards TC, with kinetics studies revealing pseudo-first-order reaction kinetics in the degradation process.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Energy & Fuels
Wasinee Pholauyphon, Ravindra N. Bulakhe, Jedsada Manyam, Insik In, Peerasak Paoprasert
Summary: This study demonstrates the use of carbon dots as versatile additives for enhancing the performance of supercapacitors. By adding carbon dots to both the TiO2 electrode and Na2SO4 electrolyte, the specific capacitance of the supercapacitor was significantly improved, leading to a total improvement of 797%. The carbon dots also improved the rate capability and retention of specific capacitance after cycles.
Article
Chemistry, Physical
G. T. Chavan, Anuja Yadav, B. Y. Fugare, Nanasaheb M. Shinde, M. S. Tamboli, S. S. Kamble, A. Sikora, J. Warycha, B. J. Lokhande, Seok-Won Kang, Ahyun Kim, Chan-Wook Jeon
Summary: This study explores the potential application of Co1-xCuxS/CoCuS thin films as materials for supercapacitors. The as-deposited thin films were characterized using various techniques. The results demonstrate that the sample-C-3 (x = 0.075) is suitable for energy storage applications, showing excellent supercapacitive performance and cycling stability, which suggests its potential as an alternative for efficient energy storage devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Shrikant V. Sadavar, Navnath S. Padalkar, Rohini B. Shinde, Akash S. Patil, Umakant M. Patil, Vikas V. Magdum, Yogesh M. Chitare, Shirin P. Kulkarni, Shital B. Kale, Ravindra N. Bulakhe, Deu S. Bhange, Saji T. Kochuveedu, Jayavant L. Gunjakar
Summary: In this study, porous layer-by-layer self-assembled nanohybrids of Co-Cr-LDH/CCW were prepared using a lattice engineering exfoliation-reassembling route, exhibiting exceptional electrochemical activity. The AHAS and ASHAS devices fabricated using these nanohybrids demonstrated high specific capacitance and excellent cycle stability.
ENERGY STORAGE MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Seshendra Reddy Ch, Ravindra N. Bulakhe, Jeevan Kumar Reddy Modigunta, G. Murali, A. Reddy Sivasankar, Jiyeong Kim, Eunji Park, Byungin Kang, Insik In, Arup Kumer Roy, Kiruthiga Ramakrishnan, Udayabhaskar Rednam
Summary: Tin oxide and nitrogen-doped graphene quantum dots composite nanotubes were successfully fabricated using electrospinning and annealing methods, and applied as electrodes in supercapacitors. The composite exhibited excellent electrochemical performance, including high capacity retention and maximum specific capacitance, in 2M KOH electrolyte at different scan rates and current densities.
JOURNAL OF NANOMATERIALS
(2022)
Article
Chemistry, Physical
A. A. Yadav, Y. M. Hunge, Seongjun Ko, Seok-Won Kang
Summary: Researchers synthesized iron oxides with different morphologies at various deposition temperatures and used them to fabricate asymmetric solid-state supercapacitor devices with excellent performance.
Article
Multidisciplinary Sciences
Geyang Chen, A. A. Yadav, In-Woo Jung, Junho Lee, Kyungwho Choi, Seok-Won Kang
Summary: This study enhances the thermal properties of polyvinyl alcohol (PVA) by using one-dimensional thin-walled carbon nanotube (1D-TWCNT) and two-dimensional boron nitride nanosheet (2D-BNNS) fillers, along with the crosslinking additive borax. The addition of borax significantly improves the conductivity of the nanocomposites.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Yuvaraj M. Hunge, Anuja A. Yadav, Seok-Won Kang
Summary: The photocatalytic degradation of organic compounds using semiconductor oxide materials has gained significant attention. This study focused on synthesizing a BaWO4/MoS2 composite through a green chemical method and investigating its effectiveness in degrading Eriochrome black-T dye. The synthesized materials were characterized using various techniques, and the BaWO4/MoS2 composite showed superior photocatalytic performance compared to BaWO4, attributed to enhanced light absorption, effective charge generation, separation, and minimum recombination of charge carriers.
Article
Chemistry, Physical
Anuja A. Yadav, Yuvaraj M. Hunge, Seok-Won Kang
Summary: In this study, a CeO2/MoS2 composite photocatalyst was successfully synthesized, exhibiting superior hydrogen production performance compared to individual CeO2 and MoS2. The composite showed higher photostability and faster charge transfer rate.
Article
Chemistry, Physical
Y. M. Hunge, A. A. Yadav, Seok-Won Kang, Hyunmin Kim
Summary: The multifunctional zinc oxide electrode has been widely used in various applications. This study focuses on the catalytic performance of zinc oxide, which is enhanced by silver nanoparticles. The Ag/ZnO composite has been fabricated using a facile and cost-effective hydrothermal method. This composite catalyst shows promising results in reducing water pollution and promoting catalytic reactions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Y. M. Hunge, A. A. Yadav, Seok-Won Kang, Sung Jun Lim, Hyunmin Kim
Summary: In the process of photocatalysis, photon energy is converted into chemical energy using light and catalyst. This process has various applications such as degradation of hazardous compounds, nitrogen fixation, hydrogen production, air purification, water splitting, and carbon dioxide reduction. The study focuses on the synthesis of ZnO and MoS2/ZnO composites and their applications in photocatalytic degradation of ciprofloxacin antibiotic and hydrogen production. The MoS2/ZnO composites show superior photocatalytic activity compared to ZnO, attributed to extended light absorption capacity, effective charge transfer, suitable band alignment, and minimum recombination of charge carriers.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Hammad Mueen Arbi, Anuja A. Yadav, Yedluri Anil Kumar, Md Moniruzzaman, Salem Alzahmi, Ihab M. Obaidat
Summary: Battery-type electrode materials have attracted much attention for hybrid battery supercapacitors. In this study, Ag-doped@Co(OH)(2)@polypyrrole nanosheets on a Ni foam were fabricated using a hydrothermal process, which exhibited rich electroactive sites, efficient charge transportation, and excellent mechanical stability. The hetero-interface of the composite showed a high specific capacity and good cycling stability, making it a potential candidate for high-performance energy storage supercapacitor devices.
Article
Chemistry, Physical
Ravindra N. Bulakhe, Anh Phan Nguyen, Changyoung Ryu, Ji Man Kim, Jung Bin In
Summary: This study describes a facile and inexpensive chemical method for the single-step synthesis of mesoporous layered nickel-chromium-sulfide (NCS) and its hybridization with single-layered graphene oxide (GO). The resulting hybrid material, NCSG, shows improved physicochemical and electrochemical properties, with a significantly higher specific surface area and pore diameter compared to bare NCS. The optimized NCSG exhibits three-fold superior specific capacity over NCS at a current density of 2 A/g. The fabricated hybrid supercapacitor (HSC) achieves outstanding energy and power densities, with a 4% decrease observed in cyclic stability over 5000 charge-discharge cycles.
Article
Chemistry, Physical
Yelim Kwon, Yun Seok Choi, Qian Wang, Lianghao Song, Hansol Kim, Ravindra N. Bulakhe, Ji Man Kim
Summary: This study investigates the use of ordered mesoporous carbon (OMC) as a dual-functional interlayer to improve the performance of lithium-sulfur (Li-S) batteries. The OMC interlayer acts as both a polysulfide adsorbent and an additional reaction site, resulting in enhanced electrochemical performance. The findings highlight the potential of using OMC for fabricating high-performance Li-S batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Shrikant Sadavar, Navnath S. Padalkar, Rohini B. Shinde, Akash S. Patil, Umakant M. Patil, Vikas V. Magdum, Yogesh M. Chitare, Shirin P. Kulkarni, Ravindra N. Bulakhe, Vinayak G. Parale, Jayavant L. Gunjakar
Summary: This study demonstrates the use of conductive graphene oxide as an efficient hybridization matrix to improve the electrode performance of LDHs, leading to enhanced specific capacity and high-rate characteristics in aqueous and all-solid-state hybrid supercapacitors.
ACS APPLIED ENERGY MATERIALS
(2022)
