Article
Multidisciplinary Sciences
Mahima Sharma, James P. Lingford, Marija Petricevic, Alexander J. D. Snow, Yunyang Zhang, Michael A. Jarva, Janice W. -Y. Mui, Nichollas E. Scott, Eleanor C. Saunders, Ruwan Epa, Bruna M. da Silva, Douglas E. V. Pires, David B. Ascher, Malcolm J. McConville, Gideon J. Davies, Spencer J. Williams, Ethan D. Goddard-Borger
Summary: Degradation of sulfoquinovose is an important process in the carbon and sulfur cycles, allowing the utilization of the sugar's carbon skeleton. Agrobacterium tumefaciens imports sulfoquinovose and releases sulfite and glucose through oxidative desulfurization. This pathway is distributed among various bacterial orders and enables complete utilization of sulfoquinovose by a single organism.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Engineering, Environmental
Annemerel R. Mol, Sebastian D. Pruim, Milan de Korte, Derek J. M. Meuwissen, Renata D. van der Weijden, Johannes B. M. Klok, Karel J. Keesman, Cees J. N. Buisman
Summary: This article reports the effects of a novel sulfidic reactor on sulfur particle size and morphology. The results show that the reactor promotes the removal of the smallest individual sulfur particles and promotes the production of sulfur agglomerates. The experiments and modeling results demonstrate the potential of the sulfidic reactor to improve process operation, sulfur separation, and sulfur recovery.
Article
Energy & Fuels
Laureano Canoira, David Donoso, David Bolonio, Cornelis Bumharter, Magin Lapuerta
Summary: This study investigates the potential of waste crude sulfate turpentine as a source for sustainable biofuels. By desulfurizing and hydrogenating the crude turpentine, its properties can be improved, although further improvements are still needed to meet specific requirements.
Article
Energy & Fuels
Latif Ullah, Guoying Zhao, Jian-Xin Ma, Muhammad Usman, Rashid Khan, Niklas Hedin
Summary: In this study, a bifunctional catalyst based on Pd-promoted molybdovanadophosphoric acid supported on mesoporous zirconia was used to catalyze the oxidative desulfurization process with excellent activity and thermal stability, achieving high conversions (>99%) with only minor loss in catalytic activity over 10 cycles. The catalyst showed a turnover frequency (TOF) value of 384 h-1 for DBT, indicating its potential for oxidative deep desulfurization of liquid hydrocarbon fuels.
Review
Engineering, Environmental
Faezeh Mirshafiee, Salman Movahedirad, Mohammad Amin Sobati, Reyhaneh Alaee, Sasan Zarei, Hamed Sargazi
Summary: Desulfurization is crucial in oil refining to mitigate the harmful effects of sulfur compounds. Naphtha, a key middle distillate, is extensively used as a fuel for automotive, engine, and jet-B applications. Hydrodesulfurization (HDS) is the conventional method employed to remove sulfur, but oxidative desulfurization (ODS) is gaining attention due to its mild reaction conditions and absence of hydrogen requirement. While ODS of diesel has been extensively investigated, limited studies have focused on ODS of naphtha. Understanding the challenges and optimizing ODS for naphtha, particularly in mini-refinery applications, is essential. This study comprehensively examines naphtha cuts, ODS mechanism, classification and comparative analysis of different ODS methods, various oxidants/catalysts, and kinetics of ODS reaction. Additionally, the impact of temperature, pH, catalyst content, and oxidation time on desulfurization efficiency is investigated, along with discussion on research gaps and suggestions for future studies in the field of ODS of naphtha.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Chemistry, Organic
Su Jeong Hong, Chang Ju Yoon, Hee Nam Lim, Hyun-Suk Yeom
Summary: A one-pot synthesis of 2-amido-3-bromobenzo[b]thiophenes was developed based on C-N coupling and oxidative bromocyclization reactions. This approach allows for obtaining diverse substituents at the C2 position of benzothiophenes by using structurally modified sulfonamides. The oxidative cyclization reaction, driven by Selectfluor, represents a novel recycling method for the bromide anion byproducts of the C-N bond coupling step.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Biotechnology & Applied Microbiology
Angelo Earvin Sy Choi, Susan A. Roces, Nathaniel P. Dugos, Meng Wei Wan
Summary: This study examines the optimization analysis of an mixing assisted oxidative desulfurization (MAOD) process for the treatment of raw diesel. The results show that the variables of mixing time, NaPW dosage, and reaction temperature have a significant impact on sulfur conversion. The study validates MAOD as a novel desulfurization technique for raw diesel.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Engineering, Environmental
Rieks de Rink, Suyash Gupta, Flavia Piccioli de Carolis, Dandan Liu, Annemiek ter Heijne, Johannes B. M. Klok, Cees J. N. Buisman
Summary: The biotechnological gas desulfurization process under haloalkaline conditions involves a dual-reactor lineup with an anaerobic step, leading to high selectivity for elemental sulfur and reduced formation of (thio)sulfate. Experiments showed that high selectivities for S8 formation were achieved in most cases, except when the pH in the aerated bioreactor was increased. Additionally, biological sulfide uptake in the anaerobic bioreactor increased at higher sulfide concentrations and pH levels, indicating a relationship with polysulfide formation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Jasim I. Humadi, Saba A. Gheni, Safaa. M. R. Ahmed, Adam Harvey
Summary: This study presents the oxidative desulfurization (ODS) of dibenzothiophene in diesel fuel using a homogeneous liquid catalytic system in a novel reactor. The results showed that the reactor significantly improved the removal efficiency of dibenzothiophene compared to conventional processes, and required a shorter reaction time.
Article
Chemistry, Multidisciplinary
Haifa Ben Salah, Paul Nancarrow, Amani Al Othman
Summary: Sulfur dioxide emissions from fossil fuel combustion can have negative impacts on health and the environment. The current hydrodesulfurization method used by refineries has limitations in producing ultralow sulfur diesel at reasonable costs. Ionic liquids have been explored as potential alternatives, but there is limited research on their industrial-scale feasibility and integration into process simulators. This study screened and evaluated 26 commercially available ILs for desulfurization of diesel fuel using COSMO-based models and Aspen Plus, and proposed an optimized process using 1-butyl-3-methylimidazolium thiocyanate that achieves ULSD with minimal loss of the IL.
Article
Energy & Fuels
Zakiullah Zaidi, Laxmi Gayatri Sorokhaibam
Summary: A novel chemical-biological approach using molybdenum and Rhodococcus erythropolis for liquid fuel desulfurization was investigated. The results show that Rh-Mo@FAT can significantly reduce the concentration of organosulfur compounds in fuel oil.
Review
Energy & Fuels
Suman Tahir, Umair Yaqub Qazi, Zubera Naseem, Noor Tahir, Muhammad Zahid, Rahat Javaid, Imran Shahid
Summary: The increasing energy consumption has led to a rise in sulfur emissions, causing economic and health issues, as well as impacting the efficiency of diesel engine emission control systems. To combat this, research is being conducted on various desulfurization technologies, including conventional methods like hydrodesulfurization and alternative processes such as adsorptive, extractive, oxidative, and bio-desulfurization. Factors such as DES selection, extraction temperature, extraction time, DES regeneration, and multistage extractions play a crucial role in the desulfurization efficiency, with deep eutectic solvents showing promise as a less toxic and more efficient alternative for extractive desulfurization.
Article
Biotechnology & Applied Microbiology
Sidan Cheng, Mei Li, Shiyong Xu, Ning Ding, Jinsong Yue, Hui Li, Rongsheng Xu, Caiyun Gao
Summary: The combination of microwave-assisted and Fenton reagents greatly enhanced the removal effect of sulfur from coal. The microwave-Fenton system achieved the best desulfurization rate of 77.52% with a microwave power of 800 W and irradiation time of 5 min, which was 82.96% higher than the maximum desulfurization rate of Fenton reagents alone. The desulfurization rates for different sulfur forms were also measured, and high removal rates were obtained.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Komal Desai, Swapnil Dharaskar, Mohammad Khalid, Vidyadhar Gedam
Summary: The use of ionic liquids in environmentally friendly fuel production has gained attention due to their ability to replace traditional solvents. This study focuses on the influential factors and multifunctional role of ionic liquids in extractive and oxidative desulfurization techniques.
Article
Chemistry, Organic
Ye Wang, Yang Yuan, Zongkang Wang, Yingge Gu, Siyi Fu, Lingkai Kong, Yanzhong Li
Summary: This method is efficient and atom-economical for the synthesis of various organic compounds, making it attractive for the synthesis of pi-conjugated material molecules.
Article
Chemistry, Physical
Mohamed Sadou, Adel Saadi, Mohammed Hadj Meliani, Rami K. Suleiman, Tawfik A. Saleh
Summary: A facile synthetic method was used to prepare copper-modified SBA-15 catalysts. The catalysts showed high activity, which could be attributed to the well-dispersed copper nanoparticles on the mesoporous support.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Physical
Nasurullah Mahar, Muhammad Haroon, Tawfik A. Saleh, Abdulaziz A. Al-Saadi
Summary: A highly sensitive approach based on surface-enhanced Raman scattering spectroscopy has been developed for the detection of procainamide drug in water and spiked urine samples. The approach utilizes synthesized gold nanoparticles to enhance the Raman intensities, resulting in a wide linear range and high selectivity.
SURFACES AND INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Taoreed O. Owolabi, Talal F. Qahtan, Olawusi Richard Abidemi, Tawfik A. Saleh, Oke Wasiu Adeyemi
Summary: This study focuses on modeling the energy gap of bismuth oxychloride semiconductor with oxygen vacancies using PSVR and STR models. The PSVR-Eg model shows significant improvement in performance and predicts the influence of lattice oxygen and oxygen vacancy on the semiconductor's energy gap. This provides new theoretical evidence for enhancing photocatalytic activity.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Tawfik A. Saleh, Mauliady Satria, Danah Al Moshawer, Hasan Al Abdulgader
Summary: The newly designed superwettable polymers with external stimuli-responsive behavior have aroused great research interest in the oil industry. In this study, advanced silica-based pH-responsive materials have been developed for oil/water separation using a simple dip-coating process. These smart materials exhibit excellent wettability conversion between superhydrophobicity-superoleophilicity and superhydrophilicity-underwater superoleophobicity, providing efficient separation for oil/water mixture. The results demonstrate outstanding superhydrophobic and superhydrophilic features, as well as high efficacy and flux for oil/water system.
SURFACES AND INTERFACES
(2022)
Article
Green & Sustainable Science & Technology
A. Q. Al-Gamal, T. A. Saleh
Summary: Highly efficient membranes were prepared by forming a polymer active layer embedded with amine-modified carbon nanotubes (CNTs) over a polysulfone support. The increase in the amount of amine-modified CNTs significantly improved the morphology, porosity, and hydrophilicity of the membrane, resulting in enhanced flux and salts/hydrocarbons separation.
MATERIALS TODAY SUSTAINABILITY
(2022)
Article
Chemistry, Physical
Rooh Ullah, Mustafa Tuzen, Saif Ullah, Muhammad Haroon, Rozina Khattak, Tawfik A. Saleh
Summary: A series of novel mixed metal oxides (MOs) were prepared as supports for Ni/MOs using the double hydrolysis technique. The desulfurization study showed that the 10%NiZnO-Al2O3 adsorbent exhibited superior desulfurization performance with a breakthrough point of 10 ppm in model gasoline. The superior desulfurization performance was attributed to its higher Lewis and Lewis/Bronsted acid site ratio, higher surface area, larger pore size distribution, and lesser amount of inactive ZnAl2O4 spinel.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Ayman A. Alazab, Tawfik A. Saleh
Summary: An effective and low-cost method for fabricating superhydrophobic surfaces was investigated. The developed materials showed excellent water-repellency and exhibited significant oil absorption capacities, high separation efficiency, and reusability in the separation of oil-water. They also demonstrated outstanding oil selectivity in different salty waters and retained excellent separation even after 10 abrasion cycles with sandpapers. The prepared materials are promising for oil/water separation in harsh environments.
SURFACES AND INTERFACES
(2023)
Review
Chemistry, Analytical
Gowhar A. Naikoo, Fareeha Arshad, Israr U. Hassan, Fatima Ba Omar, Murtaza M. Tambuwala, Mujahid Mustaqeem, Tawfik A. Saleh
Summary: Diabetes mellitus is a rapidly rising chronic disease globally. Non-enzymatic sensors, known as fourth-generation glucose sensors, have been developed to overcome the limitations of enzymatic glucose sensors. Bimetallic nanocomposite-based sensors have gained attention due to their enhanced reproducibility and stability compared to monometallic nanomaterials.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Mohammed Al-Yaari, Tawfik A. Saleh
Summary: Polyethyleneimine-grafted graphene oxide (PEI/GO) was synthesized by using graphene, polyethyleneimine, and trimesoyl chloride. The characterization results confirm the successful synthesis of PEI/GO and its strong interaction with lead (Pb2+) ions. The isotherm study reveals the adsorption process follows the Freundlich isotherm model, with a high maximum adsorption capacity. The prepared PEI/GO adsorbent shows promise for wastewater treatment due to its fast and high uptake removal capacity for Pb2+ ions and other heavy metals.
Article
Chemistry, Physical
Tawfik A. Saleh, Mulya Muhammad Nur, Mauliady Satria, Abdulrahman A. Al-Arfaj
Summary: In this study, highly inhibitive and high-temperature-resistant shale inhibitors were developed by grafting silica nanoparticles with hyperbranched APTMS and FOTS. The modified material displayed outstanding shale inhibition properties, with a hot rolling recovery test inhibition rate of approximately 96% compared to KCl standard test. The nanocomposite inhibitor also showed a significantly higher effectiveness in preventing water expansion into the original shale in the swelling test, with an inhibition rate of around 86% compared to KCl.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Imran Khan Rind, Ahmet Sari, Mustafa Tuzen, Muhammad Farooque Lanjwani, Isa Karaman, Tawfik A. Saleh
Summary: In this study, graphene nanoplatelets (GNP) were coupled with Staphylococcus aureus (S. aureus) for the adsorption of antimony (Sb) from water. The optimum conditions for composite dosage, initial concentration, pH level, contact time, and temperature were determined. The GNP/S. aureus composite exhibited promising adsorption capacity for Sb(III) ions in wastewater.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Imran Ali, Hasan M. Khan, Muhammad Naveed Akram, Yang-Fang Chen, Mujahid Mustaqeem, Tawfik A. Saleh, Muhammad Ahmad, Imran Sadiq, Nimra Lateef
Summary: Spinel ferrites with a composition of Ca0.5Ba0.5-xZnxFe2O4 were synthesized by sol-gel autocombustion and annealed at 650℃ for 6 hours. FTIR and XRD results confirmed the spinel structure and single-phase BCC structure. The samples exhibited average crystal sizes between 41.43 and 94.05 nm, and a decrease in lattice constant a value from 8.60 angstrom to 8.54 angstrom. Various parameters were calculated, including atomic packing fraction, bulk density, D-spacing, dislocation density, number of unit cells, porosity, strain, unit cell volume, volume of particles, and X-ray density.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Ayman A. Alazab, Tawfik A. Saleh
Summary: A superhydrophilic/underwater superoleophobic magnetic cellulose and acrylamide-modified polyurethane foam (Fe3O4-CE-AM@PUF) was prepared for efficient oil/water separation. The materials were characterized for their structure and morphology, showing excellent superhydrophilic/underwater superoleophobic properties. Fe3O4-CE-AM@PUF demonstrated high separation efficiency and flux for various oil-water mixtures, with the separation efficiency of n-Hexane remaining stable after 50 cycles. Its magnetic properties allowed easy removal with a magnet.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Construction & Building Technology
Intissar Ferrak, Rami K. Suleiman, Mahfoud Kadja, Mohammad Mizanur Rahman, Lina Boumediene, Fadi A. Al-Badour, Tawfik A. Saleh, Mohammed Hadj Meliani
Summary: This article investigates the hygrothermal behavior of round perforated bricks and its relationship with temperature. Experimental studies were conducted to determine various models that accurately describe the sorption isotherms and hysteresis phenomenon of the bricks. The study confirmed the significant impact of temperature on the hygrothermal behavior of the bricks, and validated the accuracy of the proposed models.
Article
Materials Science, Multidisciplinary
Tawfik A. Saleh
Summary: Apart from industrial production, increased fossil fuel consumption is also responsible for significant CO2 emissions. Photoreduction of CO2 into hydrocarbon fuels using solar energy is a promising method. This review discusses strategies to enhance the efficiency of CO2 photoreduction and different photocatalytic systems used for CO2 reduction.
BULLETIN OF MATERIALS SCIENCE
(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.