Article
Energy & Fuels
Zeta Nur Muhammad Yahya, Nadya Puteri Puspaseruni, Rani Kurnia, Deana Wahyuningrum, Irma Mulyani, Tito Wijayanto, Masanori Kurihara, Sigit Sulistio Waskito, Billal Maydika Aslam, Taufan Marhaendrajana
Summary: This study investigates the influence of aluminosilicate nanoparticles on the interfacial tension and wettability of anionic and nonionic surfactant mixtures in EOR processes. The results show that the addition of aluminosilicate nanoparticles reduces the contact angle and increases the interfacial tension, leading to contradictory effects on oil recovery.
Article
Energy & Fuels
Himanshu Kesarwani, Amit Saxena, Neha Saxena, Shivanjali Sharma
Summary: A novel biodegradable surfactant was developed from Karanj oil, which showed promising potential in enhancing oil recovery efficiency through thermal stability and reducing interfacial tension. The surfactant effectively altered the wetting behavior of the sand surface and exhibited lower adsorption compared to conventional anionic surfactants. Sand pack flooding tests indicated that using the ASP slug designed with Karanj oil surfactant led to the additional recovery of approximately 32% of crude oil after water flooding.
Article
Energy & Fuels
Tahany Mahmoud, Nadia A. Samak, M. M. Abdelhamid, A. A. Aboulrous, Jianmin Xing
Summary: The study focused on enhancing biosurfactant production using bacteria isolated from Egyptian crude oils, showing promising results in improving surfactin and trehalose productivity by optimizing carbon sources and cultivation strategies. The properties and effectiveness of the produced biosurfactants were demonstrated through various tests, indicating their potential for enhanced oil recovery.
Article
Chemistry, Physical
Lin Li, Jia Chen, Xiao Jin, Zizhao Wang, Yining Wu, Caili Dai
Summary: Surfactant flooding is an effective method for enhanced oil recovery, and developing novel surfactants with excellent water-solid interfacial wettability control capability can significantly improve oil recovery efficiency. The novel polyhydroxy anionic surfactants synthesized in this study showed superior performance in recovering residual oil adhered to oil-wet rocks, leading to an increase in oil recovery by 10.15%.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Sumadi Paryoto, Yoga Romdoni, Ivan Kurnia, Merry Marteighianti, Oki Muraza, Munawar Khalil
Summary: This study investigates the effects of individual and combined systems on the interfacial tension and wettability alteration characteristics of a combination mixture of colloidal Fe3O4 nanoparticles and amphoteric-anionic surfactant. The results show that combining the two surfactants reduces the interfacial tension and adding Fe3O4 nanoparticles at lower concentrations increases the interfacial tension. Furthermore, the combination also changes the wettability from hydrophilic to strongly hydrophilic conditions. The study also finds that adding 0.01 wt% Fe3O4 colloidal nanoparticles in the surfactant mixture provides an optimal recovery efficiency.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Energy & Fuels
Xiaoxiao Li, Xiang'an Yue, Zhen Wang, Rongjie Yan, Yabing Guo
Summary: The study revealed that increasing flow rate can facilitate oil film detachment, but the effectiveness is limited by the action area and displacement efficiency. Different surfactants with varying interfacial tensions and emulsification behaviors were found to promote the dislodging of the oil film.
Article
Energy & Fuels
Himanshu Kesarwani, Amit Saxena, Ajay Mandal, Shivanjali Sharma
Summary: The present study investigated the effects of a binary surfactant mixture on various aspects of surfactant polymer flooding, including the critical micelle concentration, adsorption behavior, interfacial properties, and wetting characteristics. By comparing initial and final concentrations of the surfactant mixture, it was found that the binary surfactant mixture outperforms individual surfactants and efficiently reduces surfactant adsorption by 63%. Additionally, the binary surfactant mixture achieved an ultralow interfacial tension value of 0.0097 mN/m and was able to recover up to 76% of the total oil in sand pack flooding experiments.
Article
Chemistry, Physical
Jianbin Liu, Shun Liu, Liguo Zhong, Pan Wang, Pengchao Gao, Qihua Guo
Summary: An anionic/cationic surfactants system with excellent emulsification ability, ultra-small droplet size, and reduced oil-water interfacial tension was developed. The droplet size of the formed O/W emulsion can be as low as 0.6 μm, and the stability is greatly improved. The system can enhance heavy oil recovery by 22.05%.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Shuai Zhao, Zhao-Hui Zhou, Yang-Nan Shangguan, Lu Han, Li-Li Wang, Wei Fan, Qun Zhang, Lei Zhang, Gui-Yang Ma, Lu Zhang
Summary: This paper investigates the effects of extended surfactant concentration, polypropylene oxide (PO) number, and various counter ions (Na+, Ca2+, and Mg2+) on the oil-water interfacial tension (IFT) of extended surfactant solutions. The results show that as the PO number increases, the space occupied by surfactant molecules on the oil phase side increases, resulting in a tighter surfactant film. Bivalent cations can significantly reduce the IFT, with calcium ions achieving ultralow values at lower PO numbers and a wide range of alkane concentrations. The ability of magnesium ions to reduce the IFT is weaker than that of calcium ions. Additionally, surface-active substances in crude oil competitively adsorb on the interface, leading to an increase in IFT. The addition of calcium or magnesium ions forms a tight adsorption film of surfactant molecules, resulting in an ultralow IFT against crude oil.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Multidisciplinary
Ahmed Wasel Alsmaeil, Antonios Kouloumpis, Georgia Potsi, Mohamed Amen Hammami, Mazen Yousef Kanj, Emmanuel P. Giannelis
Summary: This paper demonstrates the formation of stable and practical emulsions by assembling ionizable, pH-responsive silica nanoparticles. By modulating the charges of the functional groups of the nanoparticles and the oil, the assembly and behavior of the emulsion are controlled. The study provides new insights into the directed assembly of nanoparticles at fluid interfaces relevant to various applications.
Article
Engineering, Chemical
Emrah Kirtil, Enis Kurtkaya, Tatyana Svitova, Clayton J. Radke, Mecit Halil Oztop, Serpil Sahin
Summary: Quince seed extract shows promising results in stabilizing emulsions, with its interfacial properties on an oil-water interface changing with different concentrations, pH levels, and ionic strengths. QSE effectively reduces interfacial tension at different concentrations and has a relatively low critical aggregation concentration compared to similar hydrocolloids.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Energy & Fuels
Pattamas Rattanaudom, Bor-Jier Ben Shiau, Jeffrey Harry Harwell, Uthaiporn Suriyapraphadilok, Ampira Charoensaeng
Summary: The study successfully prepared silica nanoparticle (SNP) added ultralow interfacial tension foam (SNP-ULIFT foam) using ternary surfactant systems. The foam exhibited remarkable ability to form foam and ultralow interfacial tension, leading to significant improvement in oil recovery performance in core flood experiments.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Liu Xuefen, Kang Yili, Yan Lingling, Tian Jian, Li Jianfeng, You Lijun
Summary: This study investigates the effect of different surfactants on changing rock surface tension and interfacial tension, as well as their impact on enhanced oil recovery in tight oil reservoirs. The results show that fluoride FC-1 and GS surfactant have the potential to alter wettability and reduce interfacial tension. The study reveals that changing rock wettability is more favorable for oil recovery in tight sandstone oil reservoirs than reducing interfacial tension.
Article
Energy & Fuels
Tereza Neuma de Castro Dantas, Flavia Freitas Viana, Tamyris Thaise Costa de Souza, Afonso Avelino Dantas Neto, Pedro Tupa Pandava Aum
Summary: Microemulsion flooding is a chemical EOR method that enhances oil recovery by reducing surface tension and changing rock wettability. Experimental results demonstrate the potential of microemulsion prepared with alkali and polymer in the EOR process, achieving up to 97% of the oil recovery factor.
Article
Energy & Fuels
Anindya Sundar Goswami, Rajvardhan Rawat, Prathibha Pillai, Rohit Kumar Saw, Dinesh Joshi, Ajay Mandal
Summary: This study focuses on the formulation and characterization of a stable oil/water nanoemulsion using Tergitol 15-S-9 surfactant. The optimal surfactant concentration and salinity were determined through long-term stability observation. The nanoemulsion showed good IFT reduction, wettability alteration capability, and miscibility with crude oil, making it suitable for enhanced oil recovery.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Review
Energy & Fuels
Nilanjan Pal, Yara Alzahid, Abdulkareem M. AlSofi, Muhammad Ali, Hussein Hoteit
Summary: The area of conformance improvement technology (CIT) involves the use of various conventional fluids, such as polymers, gels, foams, bacteria, and emulsions. However, these methods have limitations due to degradation, damage, and segregation issues. To overcome these problems, microemulsions, which are stable fluids with tunable properties, can be used by injecting the optimal dosage of surfactants. Microemulsions can plug high permeability pore throats and improve flow stability through molecular interactions. However, more research is needed to validate their design and application for conformance improvement.
Review
Energy & Fuels
Sanket Bhatt, Shubham Saraf, Achinta Bera
Summary: Global demand for energy is increasing rapidly due to population, industrial, and economic growth, particularly in emerging market economies. To meet this growing demand for crude oil, innovative enhanced oil recovery (EOR) techniques are required. Foam is a promising method for oil recovery due to its good mobility control. This review provides an overview of foam stability research and its applications in EOR, including the potential use of nanoparticle-assisted stable CO2 foam flooding.
Review
Engineering, Chemical
Meet Ambaliya, Achinta Bera
Summary: The increasing demand for crude oil worldwide has led the oil industry to explore and improve alternative methods of oil production to meet global requirements. Enhanced oil recovery (EOR) has gained importance, and chemical EOR processes have been considered due to their higher efficiency, economic feasibility, and technical applicability. Research on nanotechnology in the petroleum industry has gained attention, particularly in the development of polymeric nanofluids for EOR. This paper reviews the current status of polymer flooding, challenges, recent developments, and economic feasibility of using polymeric nanofluids for EOR, highlighting their effectiveness in viscosity modification and chemical adsorption control to increase oil recovery by 10-15%.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Review
Green & Sustainable Science & Technology
Jain Mariyate, Achinta Bera
Summary: Sustainability refers to a multifaceted approach that considers ecological, social, and economic factors, aiming to achieve goals without compromising future generations. This paper focuses on the sustainability of the upstream Oil and Gas (O & G) industry, discussing enhanced oil recovery methods, the use of nanotechnology, and the potential of ionic liquids. The shift towards sustainable recovery methods for a better tomorrow is explored.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
Rohit Kumar Saw, Anshuman Singh, Neetish Kumar Maurya, Ajay Mandal
Summary: Low salinity water flooding is cost-effective and environmentally friendly, and the addition of nanoparticles and polymers can significantly increase oil recovery. The viscosity of complex chemical slugs can be increased by adding nanoparticles to polymer solutions. Low salinity water requires a lower concentration of polymer to reach the target viscosity compared to high saline formation water. The addition of nanoparticles reduces interfacial tension and contact angle, leading to higher oil recovery in low salinity water. Injection of low salinity water-based complex fluid results in incremental recovery of OOIP compared to low salinity water and conventional formation water flooding.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Nilanjan Pal, Yara Alzahid, Abdulkareem M. AlSofi, Muhammad Ali, Xuan Zhang, Hussein Hoteit
Summary: This article discusses the use of microemulsion-assisted conformance improvement technology (ME-CIT) to decrease the water-to-oil ratio during production operations. Experimental validation is carried out to identify the phase behavior of surfactant-based microemulsions. The results show the presence of different Winsor phases at varying salinity levels and demonstrate the favorable flow attributes of microemulsions.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Rohit Kumar Saw, Deep Sinojiya, Prathibha Pillai, Shubham Prakash, Ajay Mandal
Summary: This study aims to investigate the synergistic effects of two nonionic surfactants (Tergitol 15-S-12 and PEG 600) on surface properties, including surface tension, interfacial tension (IFT), and wettability alteration, in chemically enhanced oil recovery (EOR). The optimum composition of the surfactant mixture, determined through surface tension measurement, showed a minimum surface tension value of 30.3 mN/m at a concentration of 225 ppm of Tergitol 15-S-12 and 1 wt % of PEG 600. The surfactant mixture exhibited an ultra-low IFT of 0.672 mN/m at optimum salinity. The wettability alteration study revealed a shift in rock wettability from oil-wet to water-wet region through contact angle observations and X-ray diffraction analysis.
Review
Energy & Fuels
Sunil Kumar, Shiferaw Regassa Jufar, Sirish Kumar, Jalal Foroozesh, Shashikala Kumari, Achinta Bera
Summary: The world is addressing climate change by adopting a low-carbon energy mix and aiming for net-zero emissions. India, as the third-largest emitter of CO2, plays a crucial role in global decarbonization through its net-zero target. Hydrogen, a promising fuel for the future, faces challenges in storage, and underground hydrogen storage in geological formations is considered a practical solution due to its ample capacity and economic feasibility.
Article
Energy & Fuels
Rohit Kumar Saw, Ajay Mandal
Summary: The low salinity water flooding (LSWF) technique is cost-effective and environmentally friendly, but its mechanisms are not yet clear. Recovery in LSWF depends on fluid/fluid and rock/fluid interactions. This study investigated both interactions and found different optimal conditions for improved oil recovery. Rock/fluid interaction showed an incremental recovery of 14%, while fluid/fluid interaction showed an incremental recovery of 7% over simple seawater injection. Results highlight the importance of considering both interactions and wettability alteration in LSWF design.
Article
Chemistry, Physical
Dinesh Joshi, Neetish Kumar Maurya, Ajay Mandal
Summary: The application of graphene oxide nanosheets (GONs) in enhanced oil recovery has been shown to have unique characteristics, including reduction of interfacial tension and alteration of wetting properties. Experimental results demonstrate that GONs can alter the wettability of rock surfaces, leading to increased oil recovery.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Multidisciplinary Sciences
Nilanjan Pal, Yara Alzahid, Abdulkareem M. Alsofi, Muhammad Ali, Nurudeen Yekeen, Hussein Hoteit
Summary: This paper presents a systematic approach for designing and formulating surfactant-stabilized microemulsions for enhanced oil recovery. The methodology involves extensive laboratory work and functional assessments, considering factors such as cost, environment, and reservoir considerations.
Article
Energy & Fuels
Moumita Maiti, Ajoy Kumar Bhaumik, Ajay Mandal
Summary: Hydrate inhibitors are crucial for preventing hydrate growth and ensuring smooth drilling operations. Water-soluble polymers, such as polyvinyl pyrrolidone (PVP K-90), have been found effective in reducing hydrate formation rates. This study investigates the influence of PVP K-90 concentration on hydrate inhibition in predesigned drilling fluids containing methane, ethane, and propane.
GAS SCIENCE AND ENGINEERING
(2023)
Review
Energy & Fuels
Sanket Bhatt, Shubham Saraf, Achinta Bera
Summary: Global demand for energy is rapidly increasing due to population, industrial, and economic growth, especially in developing countries. Therefore, innovative enhanced oil recovery (EOR) techniques are needed to meet the growing crude oil demand, and the stability of foam in EOR has become a focus of research for petroleum engineers. This review discusses the basics, preparation, properties, and applications of foam in oil recovery, with a focus on nanoparticle-assisted stable CO2 foam flooding. Nanoparticles such as polymer-coated nanoclay, surfactant-stabilized foam, and surface-modified silica nanoparticles have shown exceptional foaming ability and stability at high temperatures, making them suitable for heavy oil reservoirs. Additionally, NP-stabilized CO2 foam flooding can enhance oil recovery by creating a more homogeneous gas front for better mobility control.
Article
Chemistry, Physical
Rohit Kumar Saw, Pranali M. Rane, Dinesh Joshi, Shubham Prakash, Lavisha Jangid, Ajay Mandal
Summary: In recent years, there has been increasing interest in the application of natural surfactants in enhanced oil recovery (EOR) due to environmental concerns. This study introduces a novel non-ionic surfactant synthesized from olive oil and evaluates its properties. The synthesized surfactant showed effective emulsification, wettability modification, and efficient oil displacement. Additionally, the surfactant had a low critical micelle concentration, indicating its ability to reduce interfacial tension.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Review
Energy & Fuels
Ganesh Kumar Pothula, Rakesh Kumar Vij, Achinta Bera
Summary: This review discusses the significance of chemical enhanced oil recovery (EOR) techniques in addressing India's energy crisis by reducing the dependence on crude oil imports. It provides an overview of various chemical EOR methods and operations in India, highlighting their efficiency in oil displacement and recovery. The review also examines the current trends, prospects, challenges, and screening criteria for implementing chemical EOR on a field scale. Additionally, it emphasizes the potential of chemical EOR to increase oil recovery from existing depleted fields and reduce crude oil imports. Overall, the analysis underscores the importance of chemical EOR in India's energy sector.
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.