Article
Energy & Fuels
Mingxuan Gu, Ranhong Xie, Jiangfeng Guo, Guowen Jin
Summary: In this study, a fluid saturation evaluation method that combines morphology, nonnegative matrix decomposition, and fully constrained least squares was proposed. An Akaike information criterion (AIC)-based method was also proposed to determine the number of fluid types. The results demonstrate that the proposed method can efficiently and accurately obtain the NMR T1-T2 feature and saturation of different fluid types, showing advantages over comparable methods in both computational efficiency and accuracy. Furthermore, the method was found to be highly fault tolerant when considering the impact of structure size.
Article
Food Science & Technology
Sinem Akkaya, Baris Ozel, Mecit Halil Oztop, Derya Kocak Yanik, Fahrettin Gogus
Summary: This study investigated the application of pectin-wax-based emulsion systems in preparing edible films and coatings. The addition of suitable concentrations of pectin and sunflower oil wax improved the physical characteristics of the emulsions. Furthermore, NMR relaxometry parameters were found to be effective in monitoring the formation and stability of the emulsions.
JOURNAL OF FOOD SCIENCE
(2021)
Article
Energy & Fuels
Ming Li, Vincent W. S. Lim, Saif ZS. Al Ghafri, Nicholas Ling, Abdulrauf R. Adebayo, Eric F. May, Michael L. Johns
Summary: This study evaluates the application of nuclear magnetic resonance (NMR) techniques for estimating minimum miscibility pressure (MMP) between CO2 and different oil types, showing that NMR self-diffusion measurements provide more consistent MMP estimates compared to 1D imaging and NMR relaxation measurements.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Chemical
Danuta Kruk, Elzbieta Masiewicz, Jaroslaw Budny, Aleksandra Stankiewicz, Sylwia Lotarska, Mecit Oztop, Zbigniew Wieczorek
Summary: H-1 Nuclear Magnetic Resonance relaxometry studies were conducted on fifteen types of oil, revealing that most oils follow a relationship between molecular diffusion coefficients and macroscopic viscosity coefficients. Discrepancies from this relationship were found in some oils.
JOURNAL OF FOOD ENGINEERING
(2022)
Article
Engineering, Chemical
Danuta Kruk, Elzbieta Masiewicz, Jaroslaw Budny, Karol Kolodziejski, Justyna Zulewska, Zbigniew Wieczorek
Summary: A broad range of H-1 spin-lattice relaxation studies have been conducted on different kinds of honey, with translation diffusion coefficients and rotational correlation times of water molecules in the sugar matrix determined. The translation dynamics of water molecules in honey is found to be three orders of magnitude slower than in bulk water, with systematic discrepancies observed compared to viscosity measurements. Activation energies of translational and rotational motion, as well as ratios between translational and rotational correlational times, have been determined and discussed in the context of supercooled liquids properties.
JOURNAL OF FOOD ENGINEERING
(2022)
Article
Energy & Fuels
Bo Liu, Xiao-Wen Jiang, Long -Hui Bai, Rong-Sheng Lu
Summary: This study investigates the changes in water and oil behaviors in Chinese lacustrine Qingshankou shales using 20 MHz NMR Relaxometry. The results show that different proton populations can be distinguished using T-1-T-2 maps, and the maps change with different saturated states. By combining with pyrolysis analysis, the differences in signal regions can reflect properties such as wettability and composition.
Article
Multidisciplinary Sciences
Kurt Livo, Manika Prasad, Trent R. Graham
Summary: The study evaluates the effects of dissolved oxygen on water in H-1 nuclear magnetic resonance experiments, finding that oxygen dissolution significantly reduces the transverse relaxation coefficient and presents an empirical model for predicting T-2 times. In a sandstone model system, dissolved oxygen also influences the relaxation time of confined water.
SCIENTIFIC REPORTS
(2021)
Article
Agriculture, Multidisciplinary
Elif Gokcen Ates, Maria J. Beira, Mecit H. Oztop, Pedro J. Sebastiao
Summary: This study investigated the effects of different sugar components on pectin gels using a combination of H-1 nuclear magnetic resonance (NMR) relaxometry at the molecular level and assessment of viscoelastic properties at the macroscopic level. The results showed that changes in hardness and viscosity were influenced by moisture content, while local diffusion processes probed by NMR relaxometry remained unaffected. This highlights the importance of combining micro- and macroscopic information for analyzing food product properties.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Energy & Fuels
Francesco Panattoni, Jonathan Mitchell, Edmund J. Fordham, Ravinath Kausik, Clare P. Grey, Pieter C. M. M. Magusin
Summary: The study utilized high-field, solid-state NMR methods to analyze kerogen isolates of different maturity levels, finding that the aromatic/aliphatic ratio of kerogen increases with maturity. This increase in ratio is reflected in the H-1 MAS NMR spectra by the intensity ratio of aliphatic-to-aromatic signals, suggesting a decrease in kerogen proton density during maturation.
Review
Biochemistry & Molecular Biology
Marco Barbieri, Paola Fantazzini, Claudia Testa, Villiam Bortolotti, Fabio Baruffaldi, Feliks Kogan, Leonardo Brizi
Summary: Nuclear Magnetic Resonance (NMR) is a valuable method for studying bone composition and structural properties, offering improved fracture risk estimation. While MRI can assess bone structure, its high cost and limited suitability for routine screening pose challenges.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Agronomy
Guido Fellet, Pellegrino Conte, Villiam Bortolotti, Fabiana Zama, Germana Landi, Delia Francesca Chillura Martino, Vito Ferro, Luca Marchiol, Paolo Lo Meo
Summary: This study investigated the transformations of two different biochars in soil. The results showed that the biochar obtained through wet quenching underwent both chemical and physical modifications, while the biochar obtained through dry quenching only underwent chemical alterations. It was also observed that the soil treated with the dry-quenched biochar had better water retention.
Article
Agriculture, Multidisciplinary
Pelin Pocan, Magdalena Knapkiewicz, Adam Rachocki, Mecit Halil Oztop
Summary: The study found that the use of corn syrup in Turkish delights can improve textural properties and reduce crystallization risk, but negatively affects the authenticity of the products. Techniques such as TD NMR and FFC NMR were effective in discriminating between original samples and those containing corn syrup. In addition, quantitative analysis using FFC NMR showed that molecules in Turkish delights undergo two types of translational dynamics, in addition to rotational motions.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Thermodynamics
Chen Wang, Yueliang Liu, Yifan Du, Yuan Gao, Yuanxiu Sun
Summary: The study investigates the use of geothermal energy and cosolvents to enhance heavy oil recovery through water flooding. Results show that the addition of methanol and ethanol significantly reduces the viscosity of heavy oil, leading to an increased recovery rate of heavy oil.
Article
Engineering, Biomedical
Frederik Dreyer, Qing Yang, Belal Alnajjar, Daniel Kruger, Bernhard Blumich, Jens Anders
Summary: This article presents a portable NMR relaxometry system optimized for the point-of-care analysis of body liquids, demonstrating excellent concentration sensitivity and making it an ideal candidate for future biomarker detection.
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
(2023)
Article
Chemistry, Applied
Salvatore Cataldo, Paolo Lo Meo, Pellegrino Conte, Antonella Di Vincenzo, Demetrio Milea, Alberto Pettignano
Summary: Different CyCaNSs were characterized and used as sorbents for removing Pb2+ ions from aqueous solutions. The adsorption abilities and affinities were investigated, and post-modified CyCaNSs show promise for designing environmental remediation devices. Recycling and reuse experiments on the most efficient adsorbents were also performed.
CARBOHYDRATE POLYMERS
(2021)
Article
Environmental Sciences
Mendelssolm Kister de Pietre, Jair C. C. Freitas
Summary: Environmental contamination caused by metal ions and water-soluble organic pollutants has become a global concern due to increased use and discharge of these substances in industrial activities. Zeolite-based materials have emerged as a cost-effective and practical solution for removing various types of pollutants. This study reviews recent reports on the design of modified aluminosilicates, discussing the advantages and disadvantages of different synthesis methods, and examining their efficacy in removing heavy metals, dyes, pesticides, and other organic pollutants, contributing to the development of rational approaches for environmental remediation.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Energy & Fuels
Eliane V. Barros, Lindamara M. Souza, Nata C. L. Madeira, Luiz S. Chinelatto, Juliana N. Bertelli, Rogerio M. Carvalho, Boniek G. Vaz, Rosineide C. Simas, Alvaro C. Neto, Valdemar Lacerda, Wanderson Romao
Summary: This study presents an alternative method for the specific isolation of ARN from calcium naphthenate deposits, by cleaning and converting the salts, successfully separating the ARN species, supported by high-resolution mass spectrometry techniques.
Article
Agriculture, Multidisciplinary
Pedro Alves Bezerra Morais, Karolinni B. Britto, Evandro Messias, Peterson de Andrade, Elias Werner, Adilson Vidal Costa, Valdemar Lacerda Jr, Christiano Jorge Gomes Pinheiro, Heberth de Paula, Warley de Souza Borges
Summary: To address the issues of weed infestation and herbicide resistance, the authors synthesized eight isatin derivatives using Click Chemistry. These derivatives were evaluated for their phytotoxic activity against two model plants, Lactuca sativa and Allium cepa. Six derivatives showed similar activity to the positive control trifluralin, with compound 8 being more active than trifluralin in L. sativa. ALS crystallographic structure analysis revealed the inhibitory activity of compounds 11 and 17 against A. cepa.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Dentistry, Oral Surgery & Medicine
Jader Camilo Pinto, Everton Lucas-Oliveira, Tito Jose Bonagamba, Juliane Maria Guerreiro-Tanomaru, Mario Tanomaru-Filho
Summary: The influence of micro-CT voxel size on evaluation of root canal preparation using rotary heat-treated nickel-titanium files was assessed in this study. No significant differences were observed between the two different systems (PDL and HEDM) in terms of volume increase, debris, and instrumented surface. Both systems showed higher percentage of debris in the apical third compared to the middle third. Images at 5 μm voxel size showed greater accuracy in evaluating the percentage of uninstrumented surfaces.
ODOVTOS INTERNATIONAL JOURNAL OF DENTAL SCIENCES
(2023)
Article
Biochemical Research Methods
A. Consuelo-Leal, A. G. Araujo-Ferreira, E. Lucas-Oliveira, T. J. Bonagamba, R. Auccaise
Summary: The Redfield master equation for a nuclear system with spin I = 7/2 was solved analytically, obtaining solutions for each density matrix element using the irreducible tensor operator basis. Experimental longitudinal and transverse magnetization dynamics of the 133Cs nuclei in a cesium-pentadecafluorooctanoate molecule sample were monitored, and the theoretical approach generated highly accurate mathematical expressions through numerical procedures. This methodology can be applied to other nuclei with minimal difficulties.
JOURNAL OF MAGNETIC RESONANCE
(2023)
Article
Multidisciplinary Sciences
Matheus Esteves Ferreira, Mariana Rodrigues Del Grande, Rodrigo Neumann Barros Ferreira, Ademir Ferreira da Silva, Marcio Nogueira Pereira da Silva, Jaione Tirapu-Azpiroz, Everton Lucas-Oliveira, Arthur Gustavo de Araujo Ferreira, Renato Soares, Christian B. Eckardt, Tito J. Bonagamba, Mathias Steiner
Summary: This paper presents a dataset of 3D rock plug images and petrophysical lab characterization data for digital rock and capillary network analysis. Porosity values were computed using micro-tomography data and validated with petrophysical characterization techniques. The dataset also includes experimental permeability values. This dataset is crucial for studying the relationship between porosity and permeability at pore scale.
Article
Biochemical Research Methods
Agide Gimenez Marassi, Arthur Gustavo de Araujo-Ferreira, Everton Lucas-Oliveira, Edson Luiz Gea Vidoto, Aparecido Donizeti Fernandes de Amorim, Willian Andrighetto Trevizan, Tito Jose Bonagamba
Summary: Nuclear Magnetic Resonance (NMR) is a reliable technique for estimating oil well productivity and studying rock formations. The study showed that even under dynamic conditions, the total porosity of rock samples remains unaffected by the sample motion during NMR measurements.
JOURNAL OF MAGNETIC RESONANCE
(2023)
Article
Energy & Fuels
Everton Lucas-Oliveira, Marta Henriques Jacomo, Agide Gimenez Marassi, Ricardo Ivan Ferreira da da Trindade, Tito Jose Bonagamba
Summary: NMR is widely used in Materials Science for characterizing porous materials due to its high correlation with the physical-chemical properties. Magnetic susceptibility of micro and macroporosity is investigated using T2-filtered, T1-weighted, and CPMG techniques separately. The results show a strong correlation between magnetic susceptibility and relaxation times, especially for shorter relaxation times associated with small pores.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Mateus Mota Morais, Everton Lucas-Oliveira, Tito Jose Bonagamba, Pedro Tupa Pandava Aum, Claudio Regis dos Santos Lucas, Daniel Nobre Nunes da Silva, Carlos Alberto Fortulan
Summary: This paper presents a method for fabricating artificial rocks with pure calcite composition. The artificial rocks have a controlled bimodal porosity and high mechanical resistance, but low permeability. The reported methodology is a significant advance in the field of research.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Mariana A. Vieira, Tainara L. G. Costa, Gustavo R. Goncalves, Daniel F. Cipriano, Miguel A. Schettino Jr, Elen L. da Silva, Andres Cuna, Jair C. C. Freitas
Summary: The reduction of graphene oxide (GO) by thermal and/or chemical treatments leads to the production of reduced graphene oxide (rGO) which possesses improved electrical conductivity. This study focuses on the preparation of GO from graphite recycled from spent Li-ion batteries using mixtures of sulfuric and phosphoric acids, followed by thermal reduction to obtain rGO papers. The electrochemical properties of the rGO papers were evaluated, and the results showed a strong correlation between the properties and the chemical and structural features of the materials, especially for samples containing sulfur and phosphorus elements. This work presents a facile and low-cost alternative for the production of rGO papers using recycled graphite, with promising applications as supercapacitor electrodes.
C-JOURNAL OF CARBON RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Lyane M. Darabian, Tainara L. G. Costa, Daniel F. Cipriano, Carlos W. Cremasco, Miguel A. Schettino Jr, Jair C. Freitas
Summary: Graphene quantum dots (GQDs) are nanosized systems with beneficial properties and remarkable photoluminescent features. This work presents a simple and low-cost synthesis of GQDs using a hydrothermal route, resulting in GQDs with bright blue/green luminescence. These findings open up new possibilities for the application of GQDs in optoelectronic devices.
C-JOURNAL OF CARBON RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Marcos V. V. Lyrio, Amanda E. Feu, Larissa C. Motta, Laura P. R. Figueroa, Leonardo Boasquevisque, Roberta T. Pinto, Ana Caroline L. Rosa, Heryson T. L. de Arantes, Ramon R. T. Bottocim, Victor da R. Fonseca, Nayara A. Santos, Valdemar Lacerda, Eustaquio V. R. Castro, Wanderson Romao
Summary: This study compares the performance of FT-ICR MS and LTQ MS mass spectrometers and finds that they have similar performance and high reproducibility in the analysis of low and high molecular weight organic compounds. FT-ICR MS exhibits higher mass accuracy and resolution power, making it more suitable for the analysis of proteins and oil. LTQ MS demonstrates applicability in collision-induced dissociation experiments, determining the chemical connectivity of organic compounds.
Article
Agronomy
Jessica Rodrigues Dalazen, Gustavo Pereira Valani, Henrique Duarte Vieira, Jose Cochicho Ramalho, Valdemar Lacerda Jr, Wanderson Romao, Fabio Luiz Partelli
Summary: The accumulation of nutrients in different parts of Piper nigrum 'Bragantina' spikes at different ripening stages was determined in this study. The findings indicate the importance of considering nutrient accumulation in crop development for fertilization planning and nutrient balancing.
Article
Chemistry, Multidisciplinary
Angela M. A. Lima, Wenderson T. de Paula, Iris C. H. L. Leite, Poliana A. R. Gazolla, Lucas M. de Abreu, Victor R. Fonseca, Wanderson Romao, Valdemar Lacerda Jr, Vagner T. de Queiroz, Robson R. Teixeira, Adilson Costaa
Summary: This study synthesized eugenol-fluorinated triazole derivatives with fungicidal activity, and compound 3d showed the best inhibitory activity, which may serve as a template for further structural modifications.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Radigya M. Correia, Pedro H. Cunha, Barbara Z. Agnoletti, Lucas L. Pereira, Fabio L. Partelli, Paulo R. Filgueiras, Valdemar Lacerda Jr, Wanderson Romao
Summary: The study used a portable near infrared spectrometer to control the quality of conilon coffee adulterated with coffee grounds, achieving accurate discrimination between pure and adulterated samples, and providing a feasible solution for future adulteration detection in the coffee industry.
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.
