Article
Energy & Fuels
Xuepeng Wang, Wei Deng, Chun Ho Lam, Yimin Xiong, Zhe Xiong, Jun Xu, Long Jiang, Sheng Su, Song Hu, Yi Wang, Jun Xiang
Summary: This study found that electrocatalytic hydrogenation in bio-oil upgrading leads to the formation of coke on the electrode surface, which inhibits oxidation and transformation of aromatic structures. As the experiments progressed, the formation of coke was further enhanced.
Article
Green & Sustainable Science & Technology
Nichaboon Chaihad, Yohanes Andre Situmorang, Aisikaer Anniwaer, Irwan Kurnia, Surachai Karnjanakom, Yutaka Kasai, Abuliti Abudula, Prasert Reubroycharoen, Guoqing Guan
Summary: Hierarchical HZSM-5 zeolites prepared by desilication with TPAOH-assisted NaOH exhibited enhanced catalytic performance in the upgrading of bio-oil derived from fast pyrolysis of sunflower stalk, with the best performance achieved through metal modification. Specifically, 0.25 wt% Cu loaded hierarchical HZSM-5 showed increased aromatic hydrocarbons yield with reduced coke formation.
Article
Energy & Fuels
Zengtong Deng, Syed Shatir A. Syed-Hassan, Yuanjing Chen, Long Jiang, Jun Xu, Song Hu, Sheng Su, Yi Wang, Jun Xiang
Summary: In this study, it was found that adding Ni/Al2O3 to bio-oil can inhibit the formation of coke during pyrolysis, especially at high temperatures. The catalytic cracking of small molecules enhances the formation of hydrogen radicals, promoting thermal decomposition and preventing coke formation.
Article
Energy & Fuels
Zengtong Deng, Yuanjing Chen, Xun Hu, Wei Deng, Mortaza Gholizadeh, Song Hu, Sheng Su, Long Jiang, Jun Xu, Kai Xu, Yi Wang, Jun Xiang
Summary: This study investigates the influence of pre-blending Ni/Al2O3 and bio-oil in an in-situ catalytic pyrolysis process on the coking behaviors of bio-oil. The presence of Ni/Al2O3 significantly reduces coke yield and increases gas yield. Ni/Al2O3 suppresses the reactions responsible for coke formation, promotes H-2 production, and facilitates the cracking of C-H bonds and self-reforming of bio-oil. However, it also leads to the formation of more condensed coke structures.
Article
Engineering, Chemical
Saetbyeol Kang, Nari Kim, Jihoon Jung
Summary: This study analyzed the effect of decalin on the characteristics of bio-jet fuel, finding that carbon deposition increased with added decalin but was suppressed with 5 wt % decalin. The study showed that incorporating 5 wt % decalin can improve the thermal stability of bio-jet fuel while also causing a slight increase in ignition delay time.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Energy & Fuels
Qi Zhang, Deli Zhang, Zhijing Sun, Fang Wang, Jiaqi Zhang, Rui Ma, Weiming Yi
Summary: Biomass has significant potential in addressing energy and environmental issues. Catalytic pyrolysis is an effective technology for biomass utilization. In this study, six catalysts were used to pyrolyze corn stover, and their deoxygenation effect, liquid yield, and catalyst coke accumulation behavior were comprehensively evaluated. The results showed that HZSM-5, CaO, and RM demonstrated superior deoxygenation performance. CaO achieved optimal liquid yield and deoxygenation effect at the highest feedstock-to-catalyst ratio.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Energy & Fuels
Huaqian Xu, Jun Li, Dian Zhong, Kuo Zeng, Hongyang Zuo, Xiong Zhang, Vasilevich Sergey Vladimirovich, Haiping Yang, Hanping Chen
Summary: Bio-oil has potential as an alternative fuel, but the formation of coke and soot during combustion affects its usability. This study investigates the formation mechanisms of primary coke, secondary coke, and soot during the initial stage of bio-oil combustion, and analyzes the relationship between their physicochemical properties and combustion characteristics.
JOURNAL OF THE ENERGY INSTITUTE
(2023)
Article
Energy & Fuels
Teguh Kurniawan, Achmad Setiawan, Nurika Andana Putri, Anton Irawan, Asep Bayu Dani Nandiyanto, Yazid Bindar
Summary: Soap pyrolysis is an interesting route for green jet fuel production. By using zeolites as catalysts, the quality of bio-oil can be improved and coke formation can be reduced.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Energy & Fuels
Xiaozhuang Zhuang, Ziyu Gan, Dengyu Chen, Kehui Cen, Yuping Ba, Dongxia Jia
Summary: The quality and yield of bio-oil can be improved by co-pyrolysis of heavy bio-oil and bamboo pretreated by light bio-oil leaching. Under the optimal co-pyrolysis conditions, the highest yield and heating value of bio-oil were obtained. Furthermore, the relative contents of phenols and hydrocarbons increased while that of acids decreased in the bio-oil produced by copyrolysis. Predictive models for bio-oil yield and properties were established, providing a foundation for the preparation and utilization of bio-oils.
Article
Agricultural Engineering
A. Dimitriadis, D. Liakos, U. Pfisterer, M. Moustaka-Gouni, D. Karonis, S. Bezergianni
Summary: This study found that hydrotreated pyrolysis oil can be miscible with different petroleum streams, and in some cases can even improve fuel characteristics, potentially allowing for its integration in oil refineries.
BIOMASS & BIOENERGY
(2021)
Article
Energy & Fuels
Kehui Cen, Xiaozhuang Zhuang, Ziyu Gan, Hong Zhang, Dengyu Chen
Summary: A new method of upgrading pyrolysis products through co-pyrolysis polygeneration and bio-oil recycling was proposed in this study. The results showed that the leaching pretreatment effectively removed alkali metals from pine wood, improving the quality and energy yield of bio-oil during subsequent pyrolysis. The co-pyrolysis of pine wood and heavy bio-oil had a synergistic effect, increasing the mass yield of biochar and pyrolysis gas while improving the contents of CO and C2+ gases in the gaseous products. This method provides a potential way to classify and utilize light and heavy components of bio-oil.
Article
Chemistry, Physical
Ana M. Hernandez-Gimenez, Hector Hernando, Rosa M. Danisi, Eelco T. C. Vogt, Klaartje Houben, Marc Baldus, David P. Serrano, Pieter C. A. Bruijnincx, Bert M. Weckhuysen
Summary: The deactivation modes and restoration processes of two catalysts used in cascade for bio-oil synthesis were studied. Coke adsorption onto acid sites affected the zeolite-based catalyst, while structural integrity loss was the main deactivating factor for the base catalyst.
JOURNAL OF CATALYSIS
(2022)
Article
Agricultural Engineering
Shaoqing Wang, Zhihe Li, Weiming Yi, Peng Fu, Xueyuan Bai
Summary: This study demonstrates the successful use of a tailored hierarchical zeolite catalyst for the catalytic pyrolysis of corn cob lignin, resulting in the production of value-added aromatic hydrocarbons. The hierarchical zeolite allows for the regulation of aromatic hydrocarbon components, improves catalytic stability, and reduces coke formation. This research is of great importance for practical applications.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Agricultural Engineering
Hong Tian, Rui Zhu, Lei Chen, Jiawei Wang, Yi Cheng
Summary: The valorization of Miscanthus pyrolysis was investigated to obtain aromatic hydrocarbons rich bio-oil, biochar, and combustible gas by coupling torrefaction with MoO3/ZSM-5 dual catalysis process. With optimal conditions, the system achieved high conversion rates of bio-oil, biochar, and gas. The combined method showed promising results by decreasing oxygen content and increasing aromatic yield.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Applied
Wei Deng, Xuepeng Wang, Chun Ho Lam, Zhe Xiong, Hengda Han, Jun Xu, Long Jiang, Sheng Su, Song Hu, Yi Wang, Jun Xiang
Summary: The electrochemical method is a novel option for bio-oil upgrading due to its mild reaction conditions, control convenience, and carbon neutrality. During electrochemical processing of bio-oil, coke is mainly formed from the polymerization of aromatic components, with reaction time and current density having a promoting effect on coke yields.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Thermodynamics
Wei Deng, Syed Shatir A. Syed-Hassan, Chun Ho Lam, Xun Hu, Xuepeng Wang, Zhe Xiong, Hengda Han, Jun Xu, Long Jiang, Sheng Su, Song Hu, Yi Wang, Jun Xiang
Summary: The electrochemical method offers a green solution to enhance bio-oil, but faces challenges due to bio-oil polymerization. Research shows that polymerization occurs both on the cathode surface and in the bulk solution, and can be intensified by increasing current density and reaction time.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Lijun Liu, Sheng Su, Dezhi Chen, Tao Shu, Xiaotao Zheng, Jiuyang Yu, Yu Feng, Yi Wang, Song Hu, Jun Xiang
Summary: The MnFeW/Ti composite oxide catalyst exhibits excellent SCR activity, N-2 selectivity and SO2 tolerance due to the formation of Mn-O-W and Fe-O-W bonds, which accelerate the SCR reaction rate. By tuning surface acidity via W doping, the oxidation of SO2 is inhibited, leading to improved performance at low temperature.
Article
Chemistry, Applied
Wei Deng, Xuepeng Wang, Chun Ho Lam, Zhe Xiong, Hengda Han, Jun Xu, Long Jiang, Sheng Su, Song Hu, Yi Wang, Jun Xiang
Summary: The electrochemical method is a novel option for bio-oil upgrading due to its mild reaction conditions, control convenience, and carbon neutrality. During electrochemical processing of bio-oil, coke is mainly formed from the polymerization of aromatic components, with reaction time and current density having a promoting effect on coke yields.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Applied
Samy Berthold Engamba Esso, Longfei Xu, Hengda Han, Zhe Xiong, Melvina Fudia Kamara, Jun Xu, Long Jiang, Sheng Su, Song Hu, Yi Wang, Jun Xiang
Summary: This study revealed that the co-pyrolysis of PP and RH at high temperatures promoted the formation of heavy components in all blend oils. The interactions between PP and RH also affected the yield of heavy components in blend oils at different blend ratios.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Energy & Fuels
Yawei Song, Yifeng Chen, Sheng Su, Hao Tang, Hengda Han, Jun Xu, Long Jiang, Mengxia Qing, Yi Wang, Song Hu, Jun Xiang
Summary: The combustion characteristics of acid-washed and inorganic sodium impregnated coals were studied under different heating rates, and it was found that inorganic sodium inhibits coal combustion in the early stage, but promotes it in the later stage.
Article
Energy & Fuels
Mengxia Qing, Xin Zhang, Siyuan Lei, Liang Liu, Gaoshan Zhang, Shouyang Wang, Bin Zhao, Wei Zhang, Lele Wang, Sheng Su, Song Hu, Yi Wang, Jun Xiang
Summary: The presence of fly ash increases both the deposition amount and the temperature of ABS in the 25-200 ppm SO3 concentration range. The main product formed was ABS, and its formation temperature was much higher than the deposition temperature observed in the experiment. The products gradually changed from ABS to sulfuric droplets in the 224-180 degrees C range.
Article
Chemistry, Physical
Felix Merime Bkangmo Kontchouo, Lijun Zhang, Shu Zhang, Guangzhi Hu, Xun Hu
Summary: In steam reforming of oxygen-containing organics and hydrocarbons in a fixed-bed reactor, the distribution of coke formation in different sections of the catalyst bed varied. The intermediates from oxygen-containing organics could only form coke in the upper-layer catalyst, while the hydrocarbon intermediates could easily penetrate and form more coke in the lower-layer catalyst. Insufficient gasification of certain hydrocarbon species resulted in the formation of aromatic coke, while aromatic-ring containing intermediates tended to form less aromatic coke. Steam reforming of oxygen-containing organics also produced coke with higher aliphatic nature, lower C/H ratio, lower crystallinity, and lower thermal stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Food Science & Technology
Haisheng Lin, Yuchen Jiang, Zijun Yi, Lijun Zhang, Shu Zhang, Kuan Ding, Bin Li, Shuang Wang, Xun Hu
Summary: This study investigates the potential involvement of fatty esters in cooking oil in the hydrothermal carbonization (HTC) of food waste. Cooked cabbage and rice were used as feedstock, and their HTC was conducted with vegetable oil and lard. The results show that the presence of cooking oil increases the hydrochar yield and alters its composition, reducing oxygen content and improving combustion performance.
ACS FOOD SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Hua Zhang, Zenghui Bi, Pengliang Sun, Anran Chen, Thomas Wagberg, Xun Hu, Xijun Liu, Laiming Jiang, Guangzhi Hu
Summary: We designed a heterophase electrocatalyst with dense heterogeneous interfacial sites to enhance the oxygen evolution reaction (OER) performance. The synergistic effect of high-density crystalline and amorphous heterogeneous interfaces effectively promotes charge redistribution and optimizes the adsorbed oxygen intermediates, leading to increased OER catalytic activity.
Article
Chemistry, Multidisciplinary
Jingbo Qi, Yanbiao Ren, Lincai Zhang, Xun Hu
Summary: In this study, five types of nano metal oxide supported Ni catalysts were prepared and evaluated for liquid-phase furfural hydrogenation. Among them, Ni/MgO catalyst exhibited superior performance with a high conversion rate of furfural and a high selectivity of furfuryl alcohol. The catalytic characterization results indicated that when MgO was used as the support, a solid solution of NiO-MgO was formed, resulting in highly dispersed amorphous Ni on the support surface, which contributed to the high selectivity of furfuryl alcohol. Additionally, a slight decrease in catalytic activity of Ni/MgO may be attributed to the formation of Mg(OH)2 during cyclic utilization.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Jie Zheng, Shuaitao Li, Yuanrong Zhang, Peng Zheng, Xun Hu, Yanfen Fang, Ran Duan, Qifeng Chen
Summary: The conversion of CO2 into high-value-added chemicals through photocatalysis is significant. Ceria (CeO2) has been extensively studied for this purpose, but its surface oxygen vacancies (V(O)s) are unstable. This study found that the coordination of highly dispersed Ag species can stabilize the V(O)s of CeO2, allowing for selective photocatalytic CO2 conversion. The synergy between Ag species and V(O)s promotes the adsorption, activation, and selectivity of CO2 molecules, leading to enhanced photocatalytic activity.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Chao Li, Yuannian Li, Yuewen Shao, Lijun Zhang, Shu Zhang, Shuang Wang, Bin Li, Zhenhua Cui, Yonggui Tang, Xun Hu
Summary: In the chemical activation of biomass, directly mixing an activating agent and feedstock leads to poor activation efficiency. This study proposed the use of volatilized KOH to activate biomass by placing them in separate beds. The results showed that this method resulted in higher yield and better quality of activated carbon compared to direct activation. It also reduced environmental impact and improved material efficiency.
Article
Remote Sensing
Tingxuan Jiang, Harald van der Werff, Frank van Ruitenbeek, Caroline Lievens, Mark van der Meijde
Summary: In this research, the impact of changing zenith angle on outdoor hyperspectral measurements and classifications was examined. Spectra from seven pure minerals under different zenith angles were measured and analyzed. The results showed that the center position of spectral features remained consistent, but the reflectance and depth of absorption features were affected. The classifiers SAM and ESDT demonstrated robustness in classifying pure mineral spectra under changing zenith angles, while EDC showed slightly lower robustness due to misclassification of unknown spectra. The performance of classifiers became more complicated when classifying linearly mixed spectra, with SAM and ESDT exhibiting higher robustness compared to EDC.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2023)
Article
Chemistry, Multidisciplinary
Yuewen Shao, Mengjiao Fan, Kai Sun, Guoming Gao, Chao Li, Dianqiang Li, Yuchen Jiang, Lijun Zhang, Shu Zhang, Xun Hu
Summary: The selective depolymerization of PET plastics to p-xylene is challenging, but in this study, the modification of Co-Al catalysts by introducing a second metal has successfully achieved high yields of p-xylene. Co-Fe-Al catalyst suppressed the hydrogenation of the benzene ring, while Co-Al and Co-Ni-Al catalyzed the hydrogenation and cleavage of the C-C bond in intermediates. Co-Fe-Al showed better adsorption and activation of oxygen-containing functionalities for deoxygenation reactions.
Article
Chemistry, Inorganic & Nuclear
Yuewen Shao, Mingzhu Guo, Mengjiao Fan, Kai Sun, Guoming Gao, Chao Li, Felix Merime Bkangmo Kontchouo, Lijun Zhang, Shu Zhang, Xun Hu
Summary: This study proposes a method of alloying Ni and Co with Fe over a ZSM-5 support to tackle the excessive activity of the catalyst for hydrogenation. The results show that the formation of binary NiFe and CoFe alloys enhances the dispersion of metallic species and reduces the adsorption/activation capability of H-2 and the adsorption of the CC= group in the furan ring. This leads to reduced activity for the hydrogenation of the furan ring in furfural, but enhanced hydrogenation of the C=O in ethyl levulinate (EL), resulting in the selective one-pot conversion of furfural to GVL with a high yield of 85.7%.
DALTON TRANSACTIONS
(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.