Article
Energy & Fuels
Min-Hao Yuan, Yi-Hung Chen, Siou-Chih Peng, Lu-Yen Chen, Ching-Yuan Chang, Malee Santikunaporn, Channarong Assavatesanuphap, Yi-Fa Lee
Summary: This study investigated the cold filter plugging point (CFPP) of six palm biodiesels in combination with two Taiwanese major petrodiesels. The results showed that low blending ratios of palm biodiesel can effectively reduce CFPP and meet diesel standards.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Energy & Fuels
J. Mercy Nisha Pauline, Ramachandran Sivaramakrishnan, Arivalagan Pugazhendhi, T. Anbarasan, Anant Achary
Summary: Experimental study on converting waste cooking oil into biodiesel was conducted, with results showing that the reaction works best at high temperatures, and waste cooking oil can be a potential feedstock for biodiesel production.
Article
Environmental Sciences
Sujatha Sivarethinamohan, Joga Rao Hanumanthu, Kalyani Gaddam, Gokulan Ravindiran, Avinash Alagumalai
Summary: Using solar energy to convert waste cooking oil into biodiesel achieved high conversion efficiency, reducing fuel production costs and smoke emissions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Thermodynamics
Cheekoti Venkata Rajam, Geetanjali V. Patil, Mahadev I. Sakri, Ramesh N. Jeeragal, M. Adimurthy
Summary: Compression Ignition engines can run on a mixture of diesel and waste cooking oil biodiesel (WCOBD). An experimental analysis was conducted to study the effects of using diesel-WCOBD blends on combustion, performance, emissions, and vibrations. The results showed that partially replacing diesel with WCOBD can help address the environmental and health issues caused by excessive diesel usage and reuse of cooking oil.
APPLIED THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Mahmut Beyaz, Selman Aydin, Ramazan Sener
Summary: This study aims to improve the suitability of biodiesel blends for cold region applications by enhancing combustion efficiency and emissions characteristics. The addition of ethyl proxitol as an additive to the blends resulted in significant improvements in combustion efficiency and cold flow plugging point values. The findings of this study contribute to addressing cold weather challenges in biodiesel applications and highlight the potential of biodiesel with ethyl proxitol as a promising alternative fuel.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jian Meng, Wenke Xu, Fanyan Meng, Baoli Wang, Peidong Zhao, Zhigang Wang, Hong Ji, Yixin Yang
Summary: The use of waste cooking oil biodiesel as diesel fuel affects the combustion and emission characteristics of a diesel engine. Adding waste cooking oil biodiesel prolongs the combustion duration and improves combustion at medium and high load conditions. It also contributes to emission reduction at low load conditions.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Environmental Sciences
Hantoro Satriadi, Isdayana Yogi Pratiwi, Malikhatul Khuriyah, Widayat, Hadiyanto, Jedy Prameswari
Summary: The study aimed to develop a sustainable Ni/Zeolite catalyst derived from geothermal solid waste for waste cooking oil processing. By investigating the effects of catalyst concentration and operation temperature on transesterification process, the optimal conditions for biodiesel production from waste cooking oil were determined. Results showed that the synthesized Ni/Zeolite catalyst had granular shape, crystalline structure, increased surface area, and pore volume. Highest biodiesel yield was achieved at 3% w/w Ni/Zeolite catalyst addition and 60 degrees C operating temperature. The synthesized catalyst showed a decrease in biodiesel yield after three cycles of reuse.
Article
Green & Sustainable Science & Technology
Yuanhao Zhao, Changbo Wang, Lixiao Zhang, Yuan Chang, Yan Hao
Summary: This study evaluated the environmental impacts and economic competitiveness of biodiesel production from waste cooking oil in China using life cycle assessment and life cycle cost modeling. The results showed that compared to conventional fossil diesel, waste cooking oil-based biodiesel has lower endpoint environmental impacts but higher impacts on climate change and other factors. The life cycle cost of the biodiesel is mainly influenced by waste cooking oil collection.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Engineering, Environmental
Wei Han Foo, Wen Yi Chia, Doris Ying Ying Tang, Sherlyn Sze Ning Koay, Siew Shee Lim, Kit Wayne Chew
Summary: Waste cooking oil is considered hazardous due to improper disposal causing environmental issues, but can be refined into biofuels. Its physical and chemical properties make it ideal for hydrogen gas and biodiesel production, with potential for significant future development.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Bin Sun, Baoting Su, Yuzhuang Zhao, Bowen Xu, Yuan Xue, Hualin Lin, Sheng Han
Summary: This study proposes a new type of pour point depressant (PPD) that significantly improves the cold flowability of biodiesel blends at small dosages. The PPDs exhibit the best performance at a specific ratio and the combination of PPDs further enhances the depressing effect.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Green & Sustainable Science & Technology
Jalil Nursyairah, Harrison Lik Nang Lau, Rifqi Irzuan Abdul Jalal, Soh Kheang Loh
Summary: This article investigated the cold start performance of a common rail direct injection turbocharged diesel engine using different blends of palm biodiesel fuel. The results showed that all the blends failed to start at 5℃, while B20 could withstand temperatures up to 15℃ without start-up issues. Engine workability was not significantly affected, although there was an increase in engine starting time and reduction in speed stability when using higher blends of biodiesel. Emissions of CO2 and NOx were reduced during cold start-up using B10 and B20. The study suggests including cold filter plugging point in existing diesel standards when deploying high biodiesel blends at highlands commercially.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2022)
Article
Engineering, Environmental
Omid Bahadorizadeh, Mohammad Amin Sobati, Shahin Shahnazari
Summary: This study investigated the emissions of a semi-industrial boiler using waste cooking oil biodiesel blended with different nanoparticles. The addition of CeO2 and Co3O4 showed a synergistic effect, with the B-Ce-Co-Al50 fuel sample exhibiting the lowest CO emission and the B-Ce-Co100 fuel sample showing the lowest NOX emission.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Environmental Sciences
Zhen Gao, Yingqun Ma, Yu Liu, Qunhui Wang
Summary: This study developed a co-fermentation strategy using waste cooking oil (WCO) and food waste for microbial lipid production. It was found that adjusting the pH values within a certain range could increase lipid production efficiency. The produced lipid could potentially be used for biodiesel production, leading to significant reductions in CO2 and SO2 emissions from global food waste.
ENVIRONMENTAL RESEARCH
(2022)
Article
Thermodynamics
Babak Aghel, Ashkan Gouran, Farzad Nasirmanesh
Summary: This paper focuses on the synthesis of an environmentally sustainable catalyst using industrial phosphoric waste and clinoptilolite for transesterification of waste cooking oil. Under optimized conditions, the catalyst achieved a purity of 84.76% for biodiesel production. The study demonstrates that using waste cooking oil and clinoptilolite/CaO as a catalyst is a cost-effective and eco-friendly method for oil recycling.
Article
Energy & Fuels
Hao Xu, Yimeng Li, Zhaofei Li, Yang Song, Yanyan Zhang, Hua Song
Summary: Developing renewable and environmentally friendly fuel resources is crucial for achieving sustainable energy supply. Waste cooking oil and methane can be effectively converted into high-quality oil products under specific catalysts, showing great potential for economic and environmental benefits, and suitability for further industrial application.
Article
Energy & Fuels
Jayaprabakar Jayaraman, Karthikeyan Alagu, Harish Venu, Prabhu Appavu, Nivin Joy, Parthipan Jayaram, Anish Mariadhas
Summary: This study aims to produce high-quality rice bran biodiesel through enzymatic transesterification. The test results show that blends with lower biodiesel content perform well in terms of engine performance and emissions.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Energy & Fuels
Jayaprabakar Jayaraman, Karthikeyan Alagu, Chaitany Jayprakash Raorane, Prabhu Appavu, Nivin Joy, Anish Mariadhas, J. Aravind Kumar, M. Rajasimman
Summary: In this study, the trans-esterification of used cooking oil biodiesel was catalyzed by nano zinc oxide particles with Tungsto phosphoric acid. The optimal reaction parameters were determined to achieve a maximum conversion rate of 94%. Synthetic biodiesel blends were used for engine testing and analysis, and their storage stability and fuel properties were evaluated. The addition of nano zinc oxide particles with Tungsto phosphoric acid decreased the peroxide values of biodiesel blends, leading to increased stability.
Article
Engineering, Mechanical
Nivin Joy, Anish Mariadhas, Jayaprabakar Jayaraman, Jayaprakash Venugopal, Sahaya Susmi, Bency Pensigamani
Summary: By adding nanoparticles to the fuel blend, the combustion efficiency and emission characteristics of diesel engines can be improved. The larger surface area to volume ratio of nanoparticles enhances mixing and chemical reactivity, leading to better engine performance and reduced emissions.
TRANSACTIONS OF THE CANADIAN SOCIETY FOR MECHANICAL ENGINEERING
(2023)
Review
Green & Sustainable Science & Technology
Priyadarshini Dash, Jatin Gajjar, A. Anderson, J. Jayaprabakar, G. Senthilkumar, Nivin Joy
Summary: The growth of the aviation industry is driven by the increased consumption of aviation fuel, which contributes significantly to anthropogenic CO2 emissions. In response, there has been a focus on developing renewable aviation fuels as alternatives to petroleum-based fuels. Non-edible oils combined with diesel are preferred for biofuels to meet the growing global demand for edible oils and food crops. This study compares important performance parameters of biodiesel blends from both edible and non-edible sources, including brake thermal efficiency, brake specific fuel consumption, and emission parameters such as carbon monoxide, carbon dioxide, smoke, and nitrogen oxide emissions.
ENVIRONMENTAL QUALITY MANAGEMENT
(2023)
Review
Green & Sustainable Science & Technology
R. Sureshkumar, N. Jayanthi, K. Sudhakar, K. Muralidharan, J. Jayaprabakar
Summary: This paper discusses the advantages of electric vehicles in converting to renewable energy and addresses the performance issues of lithium-ion batteries in different temperature ranges. It emphasizes the importance of cooling techniques and control strategies for enhancing security and reducing expenses. The paper also highlights the challenges and potential solutions for thermal management systems in electric vehicles.
ENVIRONMENTAL QUALITY MANAGEMENT
(2023)
Article
Environmental Sciences
A. Parthiban, S. Sathish, R. Suthan, T. Sathish, M. Rajasimman, V. Vijayan, J. Jayaprabakar
Summary: Biowaste generation has been increasing due to various social and environmental changes, and they have different compositions and are generated at different stages. This study focuses on investigating the ideal conditions for producing biogas and methane from vegetable waste using anaerobic digestion at a thermophilic temperature range. The ideal input parameter values for generating biogas 3.03 m3 and methane% 186.08 with a desirability of 1 are temperature of 20.78, organic loading rate of 0.2, pH of 8.81, agitation time of 5.8, and hydro retention time of 3. The Artificial Neural Network model outperformed the Response Surface model.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Mechanical
Anish Mariadhas, R. Rishi Kumar, S. V. Puneeth Reddy, P. Bency, J. Jayaprabakar, Nivin Joy, S. K. Sahaya Susmi, V Jayaprakash
Summary: This research investigates the effects of nanofluids on computer cooling microchannel heating devices by enhancing heat dissipation through the addition of nanoparticles. The experiment uses a mixture of 25% Therminol-55 and 75% sprinkling water containing silicon carbide (SiC), titanium oxide (TiO2), and zinc oxide (ZnO) nanoparticles. The results show that the SiC-THERMINOL/SPRINKLING WATER mixture with a concentration of 1.5% and a flow rate of 0.080 kg/s has a 9% lower CPU temperature and a 31% higher heat transfer coefficient compared to the base fluid. SiC-TL/SW also exhibits the highest pressure decrease and pumping power compared to TiO2-TL/SW. A slight increase in pumping power and pressure reduction can be tolerated due to the superior cooling performance of nanofluids.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2023)
Article
Multidisciplinary Sciences
M. Anish, J. Jayaprabakar, P. Bency, Nivin Joy, V. Jayaprakash, K. Arunkumar, J. Aravind Kumar, T. R. Praveenkumar, Ayman A. Ghfar, M. Rajasimman, Balasubramani Ravindran
Summary: The purpose of this study is to experimentally assess the impact of RCCI on the performance, emissions, and combustion of a CRDI engine. A fuel mix (20% biodiesel, 80% diesel, and a NaOH catalyst) is evaluated using ASTM standards. It is found that increasing injection pressure improves brake thermal efficiency but increases NOx emissions. However, increasing injection rate decreases Specific Fuel Consumption (SFC). CO2 and hydrocarbon emissions, as well as smoke opacity values, increase with increased charge. The resulting mixture can be used in a CI engine with pre-mixed ignition to enhance overall engine performance and combustion characteristics.
SCIENTIFIC REPORTS
(2023)
Review
Energy & Fuels
P. Priyadharsini, S. S. Dawn, J. Arun, Alok Ranjan, J. Jayaprabakar
Summary: To address global climate change and rising conventional fuel prices, bioethanol derived from marine algae is proposed as a viable green resource for transportation. This article presents a critical analysis of the sequential method for producing bioethanol from macroalgae and highlights recent advances in biofuel production through genetic engineering. The economic viability of algae-derived biofuel can be improved by creating valuable secondary by-products to reduce production costs.
Article
Environmental Sciences
J. Aravind Kumar, S. Sathish, D. Prabu, A. Annam Renita, A. Saravanan, V. C. Deivayanai, M. Anish, J. Jayaprabakar, Omirserik Baigenzhenov, Ahmad Hosseini-Bandegharaei
Summary: The worldwide trend in energy production is moving towards circular economy systems and sustainable availability of sources. Advanced methods that utilize waste biomass support economic development while limiting ecological effects. Agro waste biomass is considered a major alternative energy source that significantly lowers greenhouse gas emissions. However, the efficiency and yield of bioenergy production from agro waste biomass depend on pre-treatment, specifically the removal of lignin. The utilization of agro waste for biomass-derived bioenergy requires a comprehensive overview of feedstock, characterization, bioconversion, and contemporary pre-treatment procedures, presenting both exciting highlights and necessary advancements.
Article
Environmental Sciences
M. Anish, J. Jayaprabakar, T. Arun Kumar, V. Jayaprakash, P. Bency, S. K. SahayaSusmi, M. Arthy, J. Aravind Kumar, Mika Sillanpa, Saleh Al-Farraj
Summary: The impact of biosynthesized zirconium nanoparticles blended in diesel fuel and its combustion, emissions, and overall engine performance were studied. Zirconia nanoparticles improved thermal efficiencies, reduced fuel consumption and emissions when added to diesel fuel. Nanoparticles enhanced fuel stability, overcame detonation difficulties, and prevented spark plug fouling. The ideal concentration for improving combustion, efficiency, and safety in an internal combustion engine was found to be 30 ppm.
ENVIRONMENTAL RESEARCH
(2023)
Article
Energy & Fuels
Jayaprabakar Jayaraman, T. Arunkumar, P. Senthil Kumar, Anish Mariadhas, Prabhu Appavu, Gayathri Rangasamy
Summary: This research examines the effects of varying factors such as load and injection timing on the performance, combustion, and emissions of algal biodiesel. By optimizing the blend, load, and injection timing, it is found that biodiesel exhibits improved thermal efficiency and peak pressure, while reducing carbon emissions.
Article
Energy & Fuels
J. Jayaprabakar, A. Karthikeyan, K. Vijai Anand, T. Arunkumar, N. Anbazhaghan, Gayathri Rangasamy
Summary: The research aims to use calcination to produce nano calcium oxide (CaO) additives for fuel. Spectrum investigations confirmed the synthesis of nano particles using X-ray Diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR). The qualities of the fuel were evaluated based on ASTM criteria, and the combustion investigation in an engine found improved performance with CaO nano additives. The study concludes that micro CaO particles can potentially be used to enhance the combustion characteristics of engines powered by biodiesel blends.
Article
Energy & Fuels
Anish Mariadhas, B. Sathish Kumar, K. Kabilan, Jayaprabakar Jayaraman, Karthikeyan Alagu, Nivin Joy, J. Arun, S. S. Dawn, N. Nirmala
Summary: Due to concerns over the depletion of fossil fuels, biodiesel production from microalgae, which grow quickly and produce more oil than traditional feedstock, has attracted attention. Understanding the potential of microalgae as a feedstock oil for biodiesel synthesis is crucial. Algal-based biodiesel production plays an important role in achieving carbon-neutral transportation fuel. This review focuses on the qualities of microalgae oil biodiesel in terms of engine performance, combustion, and emission, as well as its techno-economic analysis and viability in compression ignition engines. Future directions based on the findings of the study are also discussed.
Article
Energy & Fuels
Karthikeyan Alagu, Jayaprabakar Jayaraman, Prabhu Appavu
Summary: Through catalytic pyrolysis, waste plastics can be transformed into plastic oil, which provides a suitable solution for waste plastic management. However, the inclusion of alcohol in the blend increases NOx emissions. Adding n-butanol to the fuel blend reduces emissions of HC, CO, smoke, and increases NOx emissions. Inclusion of EHN in the ternary blend reduces NOx emissions and improves brake thermal efficiency.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
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.