Article
Energy & Fuels
Sina Faizollahzadeh Ardabili, Bahman Najafi, Mortaza Aghbashlo, Zahra Khounani, Meisam Tabatabaei
Summary: The use of dual-fuel combustion process with additives like carbon nanoparticles and water in the fuel can improve engine performance and reduce emissions.
Article
Chemistry, Physical
Jami Paparao, S. Murugan
Summary: This research investigates the engine behavior of a compression ignition engine operated in dual-fuel mode with HHO as the primary fuel. The results show that using HHO can improve the engine's thermal efficiency and diesel combustion efficiency at maximum load, while reducing exhaust gas temperature and emissions of pollutants.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Zhaojun Zhu, Yikai Li, Cheng Shi
Summary: Increasing the natural gas energy fraction (NGEF) delays the start of combustion and decreases peak pressure; NGEF significantly affects the distribution of the ignition kernel, with higher NGEF scattering the ignition kernel; Lower soot volume fraction and unburned hydrocarbon emissions can be obtained by increasing NGEF from 0% to 70%, but further increasing NGEF to 85% deteriorates combustion.
Review
Chemistry, Physical
Ram Narayan Bhagat, Kunja Bihari Sahu, Surendra Kumar Ghadai, Chandra Bhushan Kumar
Summary: The global demand for cleaner and greener sources of energy is increasing, and developed countries are shifting towards non-conventional/renewable/green sources of energy. They are also trying to involve developing countries in the fight against global warming and pollution. Hydrogen, with its high calorific value, abundance, and cleaner nature, is a suitable choice as a cleaner energy source.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
B. Karpanai Selvan, Soni Das, M. Chandrasekar, R. Girija, S. John Vennison, N. Jaya, P. Saravanan, M. Rajasimman, Yasser Vasseghian, N. Rajamohan
Summary: The study investigates the performance and emission characteristics of various biomass blends in a diesel engine. The results show that the AO10D blend performs well with higher thermal efficiency and lower emissions at 50% load.
Article
Energy & Fuels
Jie Liu, Qiang Guo, Jiayong Guo, Fan Wang
Summary: This study optimized the parameters of a diesel/natural gas dual fuel engine using a combination of genetic algorithm and 3D CFD engine combustion simulation. The results showed that diesel injection timing is postponed with increasing pilot diesel quantity, and specific energy consumption is achieved within certain fuel ratio and injection timing ranges. The open bowl geometry was preferred for dual fuel combustion, while compression ratios and EGR rates concentrated to optimal values and swirl ratios showed wider distribution. Temporal and spatial analysis indicated that higher diesel fuel ratio promoted methane oxidation, while lower EGR rate and higher diesel injection quantity also played a role in methane oxidation.
Article
Thermodynamics
Messaoud Abdelalli Benbellil, Mohand Said Lounici, Khaled Loubar, Mohand Tazerout
Summary: This study investigates the effects of natural gas enrichment with high H2 concentrations on combustion characteristics, engine performance, exhaust emissions, and knock in a compression ignition engine. The results demonstrate that adding H2 to NG can improve the combustion process and enhance engine efficiency, but it may have limitations in reducing NOx emissions.
Article
Energy & Fuels
Christopher J. Ulishney, Cosmin E. Dumitrescu
Summary: This study investigated the use of dual-fuel diesel-NG engines operating at low load conditions. It found that replacing part of the diesel fuel with propane gas mixtures improved engine performance and gaseous fuel oxidation, but also led to increased CO and HC emissions.
Article
Energy & Fuels
Wooyeong Kim, Chansoo Park, Choongsik Bae
Summary: Dual-fuel combustion using natural gas and diesel has potential benefits in terms of cleaner combustion and better fuel economy, with varying natural gas/diesel mixture qualities impacting the spatial distribution of flame regimes.
Article
Thermodynamics
Hyunwook Park, Euijoon Shim, Junsun Lee, Seungmook Oh, Changup Kim, Yonggyu Lee, Kernyong Kang
Summary: Conventional dual fuel (CDF), early pilot (E-Pilot), and reactivity-controlled compression-ignition (RCCI) modes were compared in a natural gas-diesel dual-fuel engine. The CDF mode was the most suitable for high-load operations, achieving a high brake thermal efficiency (BTE) of 42.8%. The E-Pilot and RCCI modes had reduced combustion loss and achieved BTE values of 43.1% and 41.4%, respectively. The E-Pilot mode covered medium-load operations and had similar combustion phasing control to the CDF mode, while the RCCI mode showed opposite trends in combustion phasing control and was limited to low loads.
Article
Thermodynamics
Zhaojie Shen, Xinyan Wang, Hua Zhao, Bo Lin, Yitao Shen, Jianguo Yang
Summary: This study investigates the combustion and methane emissions of the YC-6K NG-diesel engine with different radial clearances. The results show that by modifying the piston geometry and piston bowls, the combustion efficiency can be increased and methane emissions can be reduced.
Article
Energy & Fuels
Zhongshu Wang, Fangyuan Zhang, Ye Xia, Dan Wang, Yun Xu, Guizhi Du
Summary: This study investigated the impact of pilot diesel injection timing on combustion phases of diesel and natural gas in a dual fuel engine, showing that injection timing plays a crucial role in determining engine thermal efficiency and exhaust emissions level. The results revealed a clear correspondence between the lengths of combustion period of two fuels, with advancing pilot diesel injection resulting in shortened combustion durations and increased combustion overlap periods.
Article
Energy & Fuels
Suozhu Pan, Jiangjun Wei, Changfa Tao, Gang Lv, Yejian Qian, Qiang Liu, Weiqiang Han
Summary: This study investigates the effects of cerium oxide nanoparticles on the performance and emissions of a diesel engine. The results show that methanol-based nanofluids with CeO2 nanoparticles can improve engine thermal efficiency and reduce emissions compared to pure methanol mode.
Article
Energy & Fuels
Ebrahim Nadimi, Grzegorz Przybyla, David Emberson, Terese Lovas, Lukasz Ziolkowski, Wojciech Adamczyk
Summary: This study investigates the use of ammonia as a primary fuel with biodiesel in a dual-fuel mode. The results show that up to 69.4% of the input energy can be provided by ammonia, but increasing the ammonia mass flow rate slightly decreases the brake thermal efficiency. Furthermore, increasing the ammonia load contribution significantly reduces CO2, CO, and HC emissions, but increases NO emissions. Ammonia delays the start of combustion and decreases the combustion duration compared to pure biodiesel operation.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
S. Ouchikh, M. S. Lounici, K. Loubar, L. Tarabet, M. Tazerout
Summary: Experimental research on the diesel injection strategy for a methane/diesel dual-fuel engine revealed that the split injection strategy significantly improved combustion efficiency and reduced NOx emissions at low load conditions.
Article
Chemistry, Applied
Henrietta Essie Whyte, Khaled Loubar, Sary Awad, Mohand Tazerout
FUEL PROCESSING TECHNOLOGY
(2015)
Article
Chemistry, Analytical
Radwan Alkhatib, Khaled Loubar, Sary Awad, Eskandar Mounif, Mohand Tazerout
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2015)
Article
Energy & Fuels
Kezrane Cheikh, Awad Sary, Loubar Khaled, Liazid Abdelkrim, Tazerout Mohand
Article
Thermodynamics
K. Khiari, S. Awad, K. Loubar, L. Tarabet, R. Mahmoud, M. Tazerout
ENERGY CONVERSION AND MANAGEMENT
(2016)
Article
Energy & Fuels
Silao Esperance Kinata, Khaled Loubar, Maria Paraschiv, Mohand Tazerout, Christophe Belloncle
Article
Agricultural Engineering
Silao Esperance Kinata, Khaled Loubar, Maria Paraschiv, Christophe Belloncle, Mohand Tazerout
BIORESOURCE TECHNOLOGY
(2012)
Article
Thermodynamics
Sary Awad, Khaled Loubar, Mohand Tazerout
Article
Thermodynamics
Mohand Said Lounici, Khaled Loubar, Lyes Tarabet, Mourad Balistrou, Dan-Catalin Niculescu, Mohand Tazerout
Article
Thermodynamics
E. Mura, P. Massoli, C. Josset, K. Loubar, J. Bellettre
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2012)
Article
Energy & Fuels
Sary Awad, Edwin Geo Varuvel, Khaled Loubar, Mohand Tazerout
Article
Chemistry, Applied
Nino Laksmono, Maria Paraschiv, Khaled Loubar, Mohand Tazerout
FUEL PROCESSING TECHNOLOGY
(2013)
Article
Chemistry, Physical
Mohand Said Lounici, Asma Boussadi, Khaled Loubar, Mohand Tazerout
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2014)
Article
Chemistry, Analytical
Silao Esperance Kinata, Khaled Loubar, Maria Pataschiv, Amine Bouslamti, Christophe Belloncle, Mohand Tazerout
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2013)
Article
Engineering, Environmental
Silao Esperance Kinata, Khaled Loubar, Amine Bouslamti, Christophe Belloncle, Mohand Tazerout
JOURNAL OF HAZARDOUS MATERIALS
(2012)
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.