Article
Environmental Sciences
Majid Masteri-Farahani, Nazanin Mosleh
Summary: CdS quantum dots synthesized within the mesopores of MCM-41 and interlayers of montmorillonite without capping agents showed high efficiency for the photodegradation of rhodamine-B under UV-Vis illumination. Characterization of CdS-QDs@MCM-41 and CdS-QDs/MMT was conducted using various spectroscopic techniques.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Yuke Xie, Ziqiao Zhong, Wenhao Wang, Ying Huang, Chuanbin Wu, Xin Pan, Zhengwei Huang
Summary: As a widely studied mesoporous silica nanoparticle in drug delivery systems, MCM-41 possesses unique properties but its applications have not been industrialized due to its interaction with biomolecules, especially proteins. This study investigated the interactions between MCM-41 and proteins using BSA, Lyso, and BHb as model proteins. Different interaction patterns were observed, leading to varying effects on protein structure, MCM-41 surface chemistry, and protein adsorption capability.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Energy & Fuels
Mingqiang Chen, Xiaoyang Feng, Yishuang Wang, Defang Liang, Chang Li, Zhonglian Yang, Jun Wang
Summary: In this study, attapulgite-based MCM-41 (AM) was synthesized using attapulgite as a silicon source, and AM-supported Ni/Ce/Zr catalysts were manufactured by sol-gel assisted impregnation method. It was found that the optimal Ce-Zr additives and calcination temperature could enhance the electronic interaction among Ni/Ce/Zr components, resulting in the highest ethanol conversion rate and stability of the catalyst. This study provides a new opportunity for the preparation of efficient and low-cost AM-supported Ni/Ce/Zr catalysts for ethanol steam reforming.
Article
Chemistry, Physical
Fatma M. Dardir, Ezzat A. Ahmed, Mamdouh F. Soliman, Sarah Othman, Ahmed A. Allam, Maha Abdulla Alwail, Mostafa R. Abukhadra
Summary: The study demonstrated the synthesis of Al-MCM-41 from natural microcline as a novel drug carrier with enhanced technical properties integrated with chitosan for the delivery of levofloxacin. The hybrid structure showed significant loading capacity, controlled release rate, and biocompatibility, making it a promising delivery system for the drug.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Applied
J. C. Bedoya, R. Valdez, L. Cota, M. A. Alvarez-Amparan, A. Olivas
Summary: In this study, mesoporous Al-MCM-41 nanospheres with variable sizes were successfully synthesized and characterized, showing hexagonal and mesoporous structure with the successful incorporation of Al ions. The smaller nanospheres exhibited more medium acidic sites on the surface. All samples displayed good selectivity towards DME, with the smallest nanospheres achieving 78% DME yield at 300 degrees C. The stability test revealed high DME yield (>60%) maintained during a 48-hour time-on-stream, indicating the potential for material recycling.
Article
Chemistry, Applied
Teng Zheng, Mengjun Li, Daofeng Mei, Jingjing Ma, Baowen Wang, Zuwei Xu
Summary: This study found that the presence of H2S can decrease the activity of the oxygen carrier and result in a lower gas yield from the biogas, while increasing temperature can alleviate this impact. During reforming, H2S mainly converts to CS2.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Aleksandra Jankowska, Andrzej Kowalczyk, Malgorzata Rutkowska, Marek Michalik, Lucjan Chmielarz
Summary: The copper-modified catalyst with aluminum containing silica spherical MCM-41 was synthesized using the template ion-exchange method and directly treated with ammonia solution. The highly dispersed monomeric Cu2+ cations, deposited on the surface, showed significantly better catalytic effectiveness in the NH3-SCR process compared to aggregated copper oxide species. The catalyst obtained by the TIE-NH3 method operated effectively in a broader temperature range and had lower activity in the side process of direct ammonia oxidation.
Article
Chemistry, Multidisciplinary
Karoline de Sousa Castro, Luis Fernando de Medeiros Costa, Valter Jose Fernandes, Regineide de Oliveira Lima, Aruzza Mabel de Morais Araujo, Mikele Candida Sousa de Sant'Anna, Nataly Albuquerque dos Santos, Amanda Duarte Gondim
Summary: The study demonstrates the high efficiency and selectivity of Ni/Al-MCM-41 catalyst in catalytic pyrolysis of palm oil, showing the potential for renewable hydrocarbon production.
Article
Chemistry, Physical
Chaochao Dong, Xiaochuan Deng, Xueqin Guo, Bin Wang, Xiushen Ye, Jie Fan, Chaoliang Zhu, Faying Fan, Binju Qing
Summary: In this study, Al-doped MCM-41 was synthesized using low-cost and non-toxic diatomite, and Cs+ adsorbents were prepared by immobilizing potassium metal ferrocyanide on Al-MCM-41. The adsorbents showed high surface area and excellent Cs+ adsorption capacity, with KZnFC/Al-MCM-41 exhibiting the highest adsorption capacity and fastest equilibrium time. The adsorption mechanism involves exchange of Cs+ and K+, as shown through various spectroscopic techniques. The synthesized adsorbents are efficient for removing Cs+ from radioactive wastewater and mineral resources.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Luis H. Molina-Conde, Alejandro Suarez-Mendez, Daniel E. Perez-Estrada, Tatiana E. Klimova
Summary: Ni/Al-MCM-41(x) catalysts with varying Si/Al ratios were synthesized and tested in the hydrodeoxygenation of anisole. The catalysts exhibited higher activities and selectivities compared to reference catalysts without Al. The optimal performance was achieved with the Ni/Al-MCM-41(90) catalyst, attributed to a synergistic effect between metal and acid sites.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Analytical
Fangqi Wang, Fengwen Yu, Yi Wei, Ao Li, Shenzheng Xu, Xianghong Lu
Summary: The study investigated the catalytic cracking of oleic acid to liquid hydrocarbon biofuels, with P/Al-MCM-41 catalyst showing excellent potential to produce high-quality biofuels. The modified catalysts significantly improved the hydrocarbons content and physiochemical properties of the biofuels.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Engineering, Environmental
Walairat Uttamaprakrom, Prasert Reubroycharoen, Pornmanas Charoensiritanasin, Jidapa Tatiyapantarak, Atthapon Srifa, Wanida Koo-Amornpattana, Weerawut Chaiwat, Chularat Sakdaronnarong, Masao Sudoh, Ryo Watanabe, Choji Fukuhara, Sakhon Ratchahat
Summary: The addition of Ce greatly improves the catalytic activity, despite a significant decrease in catalyst porosity. With the optimized Ce content, 100% CH4 yield was achieved at 350°C.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Shunyi Li, Shaohua Wang, Qiang Chen, Suyu Jiang, Shaohui Sun
Summary: Textile wastewater is a challenging environmental issue, and in this study, Cu- and Fe-doped Al-MCM-41 heterogeneous Fenton catalysts were synthesized to degrade Rhodamine B. The catalyst with 2.71 wt% of active metals, M2, showed the best performance in degrading the dye efficiently and maintaining stability.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Jian Zhang, Ximo Wang, Siyan Zhan, Hui Li, Changpo Ma, Zumin Qiu
Summary: The Mg/Al-LDH nanoflakes decorated magnetic mesoporous MCM-41 showed excellent adsorption properties for humic acid removal, with a spontaneous and endothermic process following pseudo-second-order and Langmuir isotherm models. The adsorbent demonstrated practical application and regeneration abilities, with electrostatic interactions and ion-exchange playing important roles in the adsorption process.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Physical
Dan Chen, Huayao Shen, Yue Zhang, Xuejun Zou, Aili Guan, Yulin Wang
Summary: This study explored the impact of cerium on the catalytic oxidation performance of formaldehyde over Ag/MCM-41 catalysts, with cerium-modified MCM-41 mesoporous materials synthesized at different ratios. The results showed that Ag/Ce-MCM-41 catalyst with Si:Ce = 1:1 ratio achieved complete formaldehyde oxidation above 130 degrees Celsius. The enhanced interaction between Ag and Ce, as well as Ce and SiO2, due to the addition of cerium to MCM-41, contributed to improved catalytic activity.
Article
Nuclear Science & Technology
Dong Yang, Lin Chen, Yongchang Feng, Haisheng Chen
Summary: This paper investigates the heat transfer mechanism of supercritical water during the transition process from subcritical to supercritical states. The results reveal that the difference in thermophysical properties between the boundary layer and the core region is the main reason for the heat transfer behavior, and the flow structure on the buffer layer is a dominating factor for heat transfer deterioration.
NUCLEAR SCIENCE AND ENGINEERING
(2023)
Article
Thermodynamics
Han Zhang, Liang Wang, Xipeng Lin, Haisheng Chen
Summary: The Joule-Brayton cycle-based pumped thermal electricity storage (PTES) system has a simple structure, high energy density, and geographical independence, which has broad application prospects. This study conducted multi-dimensional optimization and detailed analysis of loss and thermo-economic performance for PTES systems with various charging/discharging durations. The results showed that longer charging/discharging duration enhances the economic performance and the optimal dimensions of the cold and hot reservoirs are different.
Article
Thermodynamics
Zi-Yu Liu, Lin Chen, Haisheng Chen
Summary: This study focused on the optimization of the CO2 potential model for molecular dynamics simulation in the supercritical region. The results showed that the optimized model provided accurate descriptions of CO2 properties and heat transfer in the supercritical state.
HEAT TRANSFER ENGINEERING
(2023)
Article
Thermodynamics
Li Xiaoyu, Wang Yumeng, Zhang Xinjing, Li Bin, Xu Yujie, Chen Haisheng, Sheng Siqing
Summary: This paper introduces a novel integrated system that combines solar energy, thermal energy storage, coal-fired power plant, and compressed air energy storage to enhance the operational flexibility of the coal-fired power plant. The system achieves significant coal saving and reduction in CO2 emissions under different load conditions, providing additional revenue opportunities through ancillary services.
JOURNAL OF THERMAL SCIENCE
(2023)
Article
Energy & Fuels
Liang Wang, Xipeng Lin, Han Zhang, Long Peng, Haoshu Ling, Shuang Zhang, Haisheng Chen
Summary: A novel pumped thermal-liquid air energy storage (PTLAES) system is proposed in this paper, which converts electricity to heat and liquid air and re-converts them to electricity when needed. With a high energy storage density and no requirement for low-density cold storage devices, the PTLAES system shows round-trip efficiencies in the range of 58.7% to 63.8% and an energy storage density of 107.6 kWh/m3 when using basalt as the thermal energy storage material.
Article
Thermodynamics
Lin Lin, Liang Wang, Yakai Bai, Xipeng Lin, Shuang Zhang, Zhiwei Ge, Long Peng, Haisheng Chen
Summary: Thermal energy storage (TES) is an effective solution to the temporal mismatch between energy generation and users' requirements. The spray-type packed bed TES technology, with its high efficiency and low cost, shows promising development prospects. Experimental results indicate that the charging temperature and flow rate have minimal impact on the heat storage performance, and higher charging temperature and lower flow rate result in a more uniform temperature distribution.
APPLIED THERMAL ENGINEERING
(2023)
Article
Engineering, Environmental
Binlin Dou, Kai Wu, Hua Zhang, Bingbing Chen, Haisheng Chen, Yujie Xu
Summary: In this study, a sorption-enhanced chemical looping steam reforming process for glycerol was proposed to achieve simultaneous CO2 capture and conversion, resulting in the generation of high purity hydrogen and syngas. The results demonstrated that the use of appropriate catalysts and sorbents can effectively generate hydrogen and reduce CO2 emissions in an integrated process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
Chunyang Wang, Xiao Yang, Yanan Shen, Ting Zhang, Xinghua Zheng, Haisheng Chen
Summary: A three-dimensional numerical study was conducted to investigate the cooling performance of a thermoelectric module with multilayer pyramid thermoelectric legs. Two physical models, rectangular shaped and multilayer pyramid thermoelectric cooling modules, were compared. The study focused on the effect of leg height, side ratio, and the number of leg layers on the cooling performance. The results showed that the multilayer pyramid module had better cooling performance than the rectangular shaped module, with a maximum reduction of 11.25 K in the minimum averaged temperature of the cold surface. However, the cooling performance of the multilayer pyramid module was not very good when the values of side ratio and the number of leg layers were low. A recommended map for evaluating the cooling performance was presented based on the side ratio, the number of leg layers, and the heights of thermoelectric legs.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Materials Science, Composites
Chang Liu, Hualiang Zhang, Haisheng Chen, Yujie Xu, Yangli Zhu
Summary: This work presents a beam element approach for the modeling and high-efficiency simulation of mechanical properties of 2.5D woven composite. A technical scheme for the parametric modeling of 2.5D woven fabrics was proposed, and a method for creating matrix beam elements was also developed. The mechanical properties of the 2.5D woven composite were then simulated using a beam element solver.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2023)
Article
Thermodynamics
Xiuyan Yue, Yujie Xu, Xuezhi Zhou, Xinjing Zhang, Youqiang Linghu, Xiang Wang, Haisheng Chen
Summary: A novel combined cooling and heating storage system based on zeolite-water is proposed to effectively recover low and medium grade heat energy. The system combines zeolite-water adsorption process with water evaporation refrigeration process to generate cold energy and heat energy simultaneously. The study reveals the change laws of system performances during the discharging process, such as energy generated, energy conversion coefficient, and energy density. This research provides a way for efficient utilization of low and medium grade heat energy.
JOURNAL OF THERMAL SCIENCE
(2023)
Review
Materials Science, Multidisciplinary
Yanan Shen, Xue Han, Pengyu Zhang, Xinyi Chen, Xiao Yang, Ding Liu, Xiaona Yang, Xinghua Zheng, Haisheng Chen, Kun Zhang, Ting Zhang
Summary: With the development of IoT technology, wearable electronics have brought significant changes to our lives. The demand for low power consumption and mini-type power systems for wearable electronics is more urgent than ever. Thermoelectric materials are ideal candidates for wearable power systems as they can efficiently convert temperature difference into electrical energy without mechanical components. This review comprehensively introduces the complete process from thermoelectric materials to single-fiber/yarn devices to thermoelectric textiles, summarizing strategies for enhancing thermoelectric performance, processing techniques for fiber devices, and applications of thermoelectric textiles. Additionally, challenges and future prospects in the field are discussed.
ADVANCED FIBER MATERIALS
(2023)
Article
Energy & Fuels
Jixiang Chen, Zhitao Zuo, Xin Zhou, Wenbin Guo, Jianting Sun, Haisheng Chen
Summary: This article presents a multiobjective optimization design method for the radial inlet chamber (RIC) of the oblique flow compressor in CAES system. After optimization, the RIC area is expanded, the transition of the meridian profile is smoother, and both the distortion coefficient and total pressure loss coefficient are reduced. By using the optimized RIC, the performance of the oblique flow compressor has been improved.
Article
Energy & Fuels
Han Zhang, Liang Wang, Xipeng Lin, Haisheng Chen
Summary: This study innovatively proposes two operation modes for compressors and expanders operating at a constant rotational speed (CRS) and compares their performances with the traditional constant compression ratio (CCR) operation mode. The results show that the proposed CRS operation mode significantly improves the system storage performance. This research provides a theoretical basis for formulating appropriate system control schemes and further optimizing operational control strategies.
Article
Energy & Fuels
Yilin Zhu, Yujie Xu, Haisheng Chen, Huan Guo, Hualiang Zhang, Xuezhi Zhou, Haotian Shen
Summary: Integrated energy system (IES) is proposed in this paper, which is characterized by collaborating with multiple energy carriers to provide energetic, economic and environmental benefits. The utilization of hybrid electric/thermal storage and flexible heat harvesting in IES is rarely studied and should be considered in the planning period. The proposed IES model combines hybrid electric/thermal storage with multi-output organic Rankine cycle (ORC) and analyzes case studies and operating characteristics. It is found that the least operating cost of IES on typical season days is achieved by adopting the off-design mode of gas turbine, ORC's combined heat and power (CHP) mode and flexible heat harvesting.
Article
Engineering, Chemical
Yuelong Qu, Liang Wang, Xipeng Lin, Haisheng Chen, Shuang Zhang, Haoshu Ling, Yakai Bai
Summary: The structured packed bed is a promising reactor due to its low pressure drop and good heat transfer performance. This study conducted numerical simulations and coupling analyses to investigate the mixed convective heat transfer characteristics and mechanisms in packed beds. The effects of the driving force on fluid flow around a particle were studied, demonstrating the differences in velocity and density distributions under different flow directions. It was found that the driving force strengthened or inhibited fluid flow depending on the type of flow. The study also analyzed the effects of physical parameters on mixed convective heat transfer.
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.