Article
Chemistry, Physical
Taciana G. S. Guimaraes, Daniel F. Andrade, Ana P. R. Santana, Poliana Moser, Sabrina S. Ferreira, Iohanna M. N. R. Menezes, Clarice D. B. Amaral, Andrea Oliveira, Mario H. Gonzalez
Summary: Amino acid-based deep eutectic solvents (AADES) were prepared in this study by mixing beta-alanine with various hydrogen bond donors and water. The optimal proportions of components were determined to achieve low density and viscosity, which are crucial for efficient sample preparation. AADES showed promising potential as solvents for extracting polar compounds, metals, and semimetals, with solvatochromic and thermal analyses providing additional insights into their properties.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Applied
Jian Lee, Ye-Seul Park, Hwa-Jeong Lee, Yong Eui Koo
Summary: A novel method using diluted nitric acid and hydrogen peroxide for microwave-assisted digestion of milk samples was developed for elemental analysis. The optimized conditions resulted in accurate detection of various elements in milk samples.
Article
Chemistry, Analytical
Thaiane Nolasco da Silva, Diego B. Batista, Bernardo Ferreira Braz, Aderval S. Luna, Ricardo Erthal Santelli, Marcos Antonio dos Santos Fernandez, Jefferson S. de Gois
Summary: This work describes the development of microwave-assisted digestion methods for the determination of Cu and Sn in antifouling paints by ICP OES. The optimal conditions were determined by optimizing factors such as sample mass and solutions of HNO3, HF, and HCl. The microwave digestion-assisted ICP-OES method showed better performance compared to dry ashing with a muffle furnace and laser ablation-ICP-MS.
Article
Engineering, Chemical
Maja Welna, Anna Szymczycha-Madeja, Pawel Pohl
Summary: An analytical method for determining total Sn in canned tomatoes was developed using hydride generation (HG) coupled to inductively coupled plasma optical emission spectrometry (ICP OES) without laborious sample preparation. Different reagents were tested for ultrasound-assisted extraction to replace the traditional wet sample digestion, and aqua regia showed the best results. The developed method had a detection limit of 0.74 ng g(-1), a precision of better than 6%, and a trueness of 98.4-104%.
Article
Biochemistry & Molecular Biology
Michelle S. Lemos, Kelly G. Fernandes Dantas
Summary: A simple procedure using diluted organic acid was proposed to determine the concentrations of Al, Cr, K, Mg, Mn, and Zn in shrimp and crab samples. The method was found to be accurate and suitable for the analysis of crustacean samples using MIP OES.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2023)
Article
Chemistry, Analytical
Joao B. Pereira Jr, Vanessa S. Carvalho, William Q. Ferreira, Rennan G. O. Araujo, Sergio L. C. Ferreira
Summary: This work presents a simple, cost-effective, and environmentally friendly method for determining the content of multiple elements in medicinal herbs using ICP OES. The optimized experimental parameters result in low dissolved organic carbon content and residual acidity concentration. The accuracy of the method is confirmed through the analysis of certified reference materials, and its environmental friendliness is validated using the AGREE metric. Principal component analysis is used to classify the medicinal herbs based on their inorganic constituent concentrations.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2024)
Article
Energy & Fuels
Kassia Roberta Nogueira da Silva, Hugo Santos Pereira, Valter Aragao do Nascimento, Jorge Luiz Raposo Jr
Summary: This study developed the RP-DLLME sample preparation method and applied it to the determination of multiple metal elements in petroleum-derived samples using ICP OES. The RP-DLLME procedure was optimized and evaluated through multivariate statistical analysis. The results showed that this method has good accuracy and precision, making it a viable alternative for routine analysis.
Article
Environmental Sciences
Ghanim Al-Thani, Adel Ehab Ibrahim, Mohammed Alomairi, Baher I. Salman, Mostafa M. Hegazy, Ahmed Al-Harrasi, Sami El Deeb
Summary: The use of weight loss herbal preparations is increasing due to the consumption of high-calorie junk food. However, the regulations governing the quality control of these products may be minimal. This study investigated the elemental contents in these products and found that some macro-elements were present at safe levels, while some micro-elements and other elements showed concerning levels. Stricter surveillance of herbal products is necessary.
Article
Chemistry, Analytical
Samuel R. Waechter, Paula Dalla Vecchia, Juliano S. Barin, Erico M. M. Flores, Fabio A. Duarte
Summary: In this study, two microwave-assisted sample preparation methods, microwave-induced combustion (MIC) and microwave-assisted ultraviolet digestion (MAD-UV), were proposed for further determination of halogen elements (Br, Cl, and I) in blood. The results showed no difference in halogen determination between MIC and MAD-UV methods, both exhibiting good accuracy and recoveries for Br, Cl, and I. The proposed methods offer a suitable digestion approach with high safety and efficiency for halogen determination in blood, suitable for clinical analysis.
Article
Chemistry, Multidisciplinary
Mohamed A. Gab-Allah, Adel B. Shehata
Summary: A new method based on microwave-assisted digestion (MW-AD) was developed for efficient determination of iron, nickel, and vanadium in crude oil samples, with optimized conditions yielding satisfactory results. The method was successfully validated through spiked sample analysis, demonstrating good recovery and precision.
Article
Chemistry, Multidisciplinary
Sutthichai Khamhuatoey, Sommas Kaewluan, Jarernporn Thawornprasert, Ye Min Oo, Kritsakon Pongraktham, Krit Somnuk
Summary: This study evaluated the performance and emissions of direct injection diesel engines using blends of diesel-biodiesel-esterified pyrolysis bio-oil (D-B-EPB). The results showed that a fuel blend consisting of 30% diesel, 60% biodiesel, and 10% EPB (D30B60EPB10) met the density and viscosity requirements of diesel standards. The D30B60EPB10 blend exhibited performance comparable to diesel while being more environmentally friendly in terms of reducing carbon monoxide, carbon dioxide, nitrogen oxide, and smoke opacity.
Article
Chemistry, Analytical
Jaime S. Mandlate, Alessandra S. Henn, Paola A. Mello, Erico M. M. Flores, Juliano S. Barin, Fabio A. Duarte
Summary: A simple and fast sample preparation method called microwave-induced combustion in disposable vessels (MIC-DV) was developed for Cl and S determination in crude oil using ICP-OES. The method allows efficient digestion of up to 10 mg of crude oil per cycle, reaching a total sample mass of 50 mg.
ANALYTICA CHIMICA ACTA
(2023)
Article
Energy & Fuels
M. Mubarak, A. Shaija, T. V. Suchithra
Summary: Experimental results show that using Salvinia molesta biodiesel blend as fuel in diesel engines can significantly reduce peak pressure and heat release rate, as well as improve performance and reduce emissions, with B20 blend performing the best.
Article
Materials Science, Multidisciplinary
Natalia A. Korotkova, Vasilisa B. Baranovskaya, Kseniya Petrova
Summary: In this article, an analytical procedure for the analysis of waste Sm-Co magnets was developed using ICP-MS and ICP-OES. The experimental parameters related to microwave digestion and acid concentrations were optimized. The matrix effect on the ICP-MS analysis and optimal instrumental parameters were investigated. The proposed method was validated through recovery tests and inter-method experiments.
Article
Chemistry, Analytical
Feyzullah Tokay, Refiye Gunaydin, Sema Bagdat
Summary: A novel vortex-assisted solid phase extraction method combined with inductively coupled plasma optical emission spectrometry was developed for direct determination of Mn, Cu, Ni, Cr, Cd, and Pb in oily matrices. The method involved sorption onto γ-Al2O3 functionalized with fluorescein, followed by transfer to an aqueous eluent for quantification. The method showed good accuracy and precision, with detection limits ranging from 0.7 to 1.6 μg L-1 and recovery values between 98.4% and 103.3% with 2.6-6.4% relative standard deviation.
Review
Food Science & Technology
Clara Mariana Goncalves Lima, Herique Riley Duarte Costa, Jorge Pamplona Pagnossa, Nathalia de Castro Rollemberg, Josiane Ferreira da Silva, Flavia Michelon Dalla Nora, Gaber El-Saber Batiha, Silvani Verruck
Summary: Mycotoxins, produced by certain fungi, have toxic effects on humans and animals. This study reports on the influence of postharvest conditions on the occurrence of mycotoxins in milk and dairy products. Temperature and humidity during grain storage are key factors that can be controlled to reduce fungal growth and mycotoxin production.
FOOD SCIENCE AND TECHNOLOGY
(2022)
Review
Food Science & Technology
Milena Dutra Pierezan, Flavia Michelon Dalla Nora, Silvani Verruck
Summary: Mothers' food consumption has a positive correlation with the concentration of potentially toxic elements in human milk, with seafood, fresh vegetables, and cereals as the main sources. However, consumption of red meat, caffeinated drinks, and dairy products may reduce the intake of toxic elements. Some infants may have a high risk of exposure to mercury and lead through breastfeeding.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2023)
Review
Chemistry, Applied
Clara Mariana Goncalves Lima, Paula Benoso, Milena Dutra Pierezan, Renata Ferreira Santana, Guilherme de Souza Hassemer, Roney Alves da Rocha, Flavia Michelon Dalla Nora, Silvani Verruck, Daniela Caetano, Jesus Simal-Gandara
Summary: This study discusses the analysis methods of chemical compounds in sugarcane spirit and their impact on product properties. Sugarcane spirit producers face challenges of quality loss and lack of standardization. The use of modern chemometric and artificial intelligence tools for data processing and the application of computer vision in identifying fraud and non-compliance are also discussed.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2022)
Article
Environmental Sciences
Altevir Rossato Viana, Bruna Godoy Noro, Daniel Santos, Katianne Wolf, Yasmin Sudatti Das Neves, Rafael Noal Moresco, Aline Ferreira Ourique, Erico Marlon Moraes Flores, Cristiano Rodrigo Bohn Rhoden, Luciana Maria Fontanari Krause, Bruno Stefanello Vizzotto
Summary: This study investigated the phytochemical compositions and biological activities of Vassobia breviflora extract. The extract exhibited excellent antioxidant and antimicrobial activities, as well as cytotoxic effects against various tumor cells. Moreover, it also increased the production of reactive oxygen species.
JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH-PART A-CURRENT ISSUES
(2023)
Article
Chemistry, Analytical
Felipe A. Silva, Beatriz R. Rigui, Cristian R. Andriolli, Erico M. M. Flores, Paola A. Mello, Rochele S. Picoloto
Summary: A miniaturized liquid-liquid extraction (LLE) method was proposed for pre-concentration of Na, K, Ca, and Mg in crude oil. The method showed no statistical difference compared to the reference values, with relative standard deviations lower than 6%. The proposed miniaturized LLE method presents several advantages, such as ease-of-use, high throughput, and low limits of quantification, making it an environmentally friendly and cost-effective alternative for routine analyses.
Article
Chemistry, Analytical
Jaime S. Mandlate, Alessandra S. Henn, Paola A. Mello, Erico M. M. Flores, Juliano S. Barin, Fabio A. Duarte
Summary: A simple and fast sample preparation method called microwave-induced combustion in disposable vessels (MIC-DV) was developed for Cl and S determination in crude oil using ICP-OES. The method allows efficient digestion of up to 10 mg of crude oil per cycle, reaching a total sample mass of 50 mg.
ANALYTICA CHIMICA ACTA
(2023)
Article
Environmental Sciences
Jorge Osorio-Martinez, Luis F. F. Silva, Erico M. M. Flores, Gabriel T. T. Druzian, Jesus Olivero-Verbel
Summary: This study assessed the concentrations and toxicity of potentially toxic elements (PTEs) in urban dust from Barranquilla, Colombia. The results showed that the PTEs in the dust had negative effects on the physiological parameters of Caenorhabditis elegans, indicating that it can be used as a sensitive organism for warning systems related to biota risks associated with air pollution.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Multidisciplinary Sciences
Rosana Santos de Moraes, Paulo Carteri Coradi, Marcela Trojahn Nunes, Marisa Menezes Leal, Edson Irineu Muller, Paulo Eduardo Teodoro, Erico Marlon Moraes Flores
Summary: Drying rice in a silo-dryer-aerator using single-layer loading at low temperatures resulted in uniform drying. This study evaluated the physical, physicochemical, and morphological quality of rice grain cultivars in the lower and upper layers of the silo-dryer-aerator. The results showed that drying rice in silo-dryer-aerator attenuated the moisture diffusivity in the grains and preserved the physicochemical constituents and morphology of starch, especially in the lower layers throughout the 2-month drying. The Guri INTA and BRS Pampeira cultivars exhibited the highest resistance to drying and had the most uniform final quality.
Article
Chemistry, Analytical
Jussiane S. S. Silva, Graciela M. M. Heidrich, Bruno O. O. Poletto, Jose N. G. Paniz, Valderi L. L. Dressler, Erico M. M. Flores
Summary: A direct solid sampling method using ETV-ICP-MS was developed for determining mercury in bioresorbable calcium phosphate-based materials. The method involved fast sample heating with a halogen lamp, followed by vaporization and cooling steps. Mercury vaporized at a low temperature and did not co-vaporize the main matrix. External calibration using aqueous solutions was used for quantification. The method showed good accuracy, precision, and sample throughput, making it suitable for routine analyses.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Chemistry, Analytical
Gustavo Rossato Bitencourt, Fabio Andrei Duarte, Valderi Luiz Dressler, Rodrigo Cordeiro Bolzan, Erico Marlon de Moraes Flores, Paola Azevedo Mello
Summary: A single method using chemical vapor generation coupled with microwave-induced plasma optical emission spectrometry was developed for the determination of As and Hg in dietary supplements. The method complied with the maximum concentration requirements set by the United States Pharmacopeia and showed no statistical difference compared to comparative methods. The proposed method can be considered an alternative for the quality control of As and Hg in dietary supplements.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Food Science & Technology
Vanessa Bordin Viera, Natieli Piovesan, Renius De Oliveira Mello, Juliano Smanioto Barin, Aline De Oliveira Fogaca, Cezar Augusto Bizzi, Erico Marlon De Moraes Flores, Ana Carolina Dos Santos Costa, Diego Elias Pereira, Juliana Kessia Barbosa Soares, Ernesto Hashime Kubota
Summary: This study determined the antioxidant activity of red onion peel extract using ultrasound extraction, and found that different ultrasound power and solvent concentration had varying effects on different antioxidant indicators.
JOURNAL OF CULINARY SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Gabriel T. Druzian, Mariele S. Nascimento, Rochele S. Picoloto, Marcia F. Mesko, Erico M. M. Flores, Paola A. Mello
Summary: A method for determining sub-ppb levels of mercury in crude oil using cold vapor generation inductively coupled plasma mass spectrometry (CV-ICP-MS) was developed by optimizing the operational parameters for crude oil digestion and evaluating the accuracy of the method. The optimized conditions allowed for the complete digestion of up to 1.2 g of crude oil and achieved a very low limit of detection.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Microbiology
Nathalia de Castro Rollemberg, Guilherme de Souza Hassemer, Milena Dutra Pierezan, Bruna Marchesan Maran, Flavia Michelon Dalla Nora, Silvani Verruck
Summary: Flaxseed has functional properties and contains various nutrients, but its microbiota can lead to fungal contaminations. This study used metataxonomics and high-performance genetic sequencing to identify the fungi present in bulk flaxseed. Six genera and eight species of fungi were found, with Aspergillus and Wallemia being the main genera. Metataxonomics and high-performance genetic sequencing are important tools for researching food safety.
MICROBIOLOGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Flavia M. Dalla Nora, Alessandra S. Oliveira, Fabio A. Duarte, Alexandre J. Cichoski, Juliano S. Barin
Summary: Thermal infrared enthalpimetry (TIE) was used to determine hypochlorite in commercial bleaching solutions. Experimental parameters were optimized, resulting in consistent and low variability measurements compared to the reference method. The proposed method reduced the number of analytical operations and required a greener reagent, while generating less residues, indicating its greenness.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2022)
Article
Agronomy
Caroline Pagnossim Boeira, Deborah Cristina Barcelos Flores, Bruna Nichelle Lucas, Daniel Santos, Erico Marlon Moraes Flores, Frederico Luiz Reis, Liziane Maria Barassuol Morandini, Ademir Farias Morel, Claudia Severo da Rosa
Summary: This study investigated the feasibility of ultrasound-assisted extraction of antioxidant compounds from corn stigma and optimized the extraction conditions. The results showed that ultrasound-assisted extraction increased the antioxidant activity and reduced the extraction time. The characterized extract exhibited promising antifungal and antibacterial activities.
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.