Review
Environmental Sciences
Lu Wang, Hanyue Wang, Jianhua Fan, Zhiwu Han
Summary: This article provides a thorough analysis of biodiesel synthesis, covering various aspects such as oil feedstock, synthesis methods, catalysts, and enhancement technologies. It compares different oil feedstocks and synthesis methods, highlighting their respective advantages and disadvantages. Additionally, it provides an overview of emerging intensification technologies and evaluates their benefits and limitations. The contribution of this article lies in offering a comprehensive review of biodiesel production technologies, allowing researchers to assess and compare the latest advancements and contribute to the development of new energy sources.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Materials Science, Multidisciplinary
D. Murguia-Ortiz, I. Cordova, M. E. Manriquez, E. Ortiz-Islas, R. Cabrera-Sierra, J. L. Contreras, B. Alcantar-Vazquez, M. Trejo-Rubio, J. T. Vazquez-Rodriguez, L. V. Castro
Summary: Mexican dolomites doped with sodium nitrate were calcined to generate mixed metal oxides for catalytic transesterification of canola oil. Among all catalysts, Na-CaO/MgO exhibited the highest conversion rate of 95.4% and the optimal theoretical conversion rate of 97.46% was obtained through nonlinear programming.
Article
Agricultural Engineering
Yashvir Singh, Abhishek Sharma, Nishant Kumar Singh
Summary: Supercritical methanol transesterification is an effective method for processing biodiesel, which can produce a substantial amount of biodiesel in a short period of time and solve the problems associated with catalyst processing. The study found that the reaction temperature, methanol to oil ratio, reaction time, and pressure have a significant impact on the biodiesel production in the supercritical methanol transesterification process.
BIOMASS & BIOENERGY
(2022)
Review
Chemistry, Multidisciplinary
Manish Kumar Bharti, Sonia Chalia, Preeti Thakur, S. N. Sridhara, Atul Thakur, P. B. Sharma
Summary: The depletion and pollution of fossil fuels are prompting the use of alternative, renewable energies such as biofuels. Nanoferrites heterogeneous catalysts have been reviewed for producing biodiesel efficiently. Using transesterification, high conversion yields, low cost, and reusable catalysts can be achieved, with over 90% conversion yields possible with moderate alcohol/oil ratios.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Yan Liu, Meng-Yu Liu, Ying-Xi Qi, Xin-Yan Jin, Han-Rui Xu, Yu-xin Chen, Shuo-ping Chen, He-ping Su
Summary: A cost-effective wax was synthesized from waste cooking oil, and it showed higher melting point, good hardness, and combustion performance compared to the original waste cooking oil. The addition of stearic acid further improved the properties of the wax. This research provides a new path for waste cooking oil recycling in economically trailing regions.
Article
Engineering, Chemical
Reza Khoshbin, Maryam Naeimi, Fatemeh Mohamad Alikhani, Monireh Sadat Hosseini Hashemi, Hiresh Moradi
Summary: A series of MgO/ZnAl2O4 nanocatalysts were prepared and evaluated for their physicochemical properties. The catalysts with porous structure and highly dispersed active phase were successfully synthesized by different synthesis methods and fuel ratios. Among them, the sample synthesized with a urea to citric acid ratio of 1:2 exhibited the best catalytic performance and stability.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Energy & Fuels
Harveer Singh Pali, Abhishek Sharma, Naveen Kumar, Yashvir Singh
Summary: The production of high quality biodiesel from Kusum oil using base catalysed transesterification has been optimized through statistical modeling. The optimized conditions yielded biodiesel with desirable characteristics and a high yield, making it a viable option for commercial production.
Article
Environmental Sciences
Elamathi Vimali, Sathaiah Gunaseelan, Venkatachalam Chitra Devi, Sengottian Mothil, Muthu Arumugam, Balasubramaniem Ashokkumar, Innasi Muthu Ganesh Moorthy, Arivalagan Pugazhendhi, Perumal Varalakshmi
Summary: This study explores the use of marine brown macroalga as a sustainable feedstock for the production of biofuels and other bioproducts. The researchers successfully extracted lipids and algal oil from the macroalgae and produced biodiesel through transesterification using TiO2 as a catalyst. The study also examined the quality parameters of the biofuels, which met international fuel standards.
Article
Energy & Fuels
Murat Kadir Yesilyurt, Cueneyt Cesur
Summary: This study successfully synthesized biodiesel from crude oil extracted from Papaver somniferum L. seeds, which showed high oil content and could serve as an important feedstock for biodiesel production. Optimal reaction conditions were determined, resulting in the highest yield of biodiesel that met global standards.
Article
Energy & Fuels
Basiru O. Yusuf, Sulayman A. Oladepo, Saheed A. Ganiyu
Summary: Bio-based fuels, like biodiesel, are gaining attention due to concerns about increasing energy consumption and global warming. Solid catalysts, such as zeolite-supported ZrO2 catalysts, are crucial in the production of green biodiesel as they can lower the cost of separation and reduce biodiesel costs. In this study, a series of desilicated zeolite-supported ZrO2 catalysts were successfully synthesized and used in the production of soybean oil biodiesel through transesterification. The desilicated zeolite-supported ZrO2 catalysts exhibited higher catalytic activity compared to the ZrO2/ZSM-5 catalyst, thanks to their larger pore volume, higher surface area, improved acidity, and more active sites. The optimized reaction conditions yielded biodiesel conversion rates of 90.1% and 97.84% for the ZrO2/ZSM-5 and desilicated zeolite-supported ZrO2 catalysts, respectively, with excellent stability and reusability for the latter.
Article
Engineering, Chemical
Ayse Hilal Ulukardesler
Summary: The global energy demand is increasing and fossil fuels will eventually be depleted. Renewable biofuels, such as biodiesel, have the potential to meet the world's current energy demand. This study aims to optimize the biodiesel production process and reduce production cost by using waste cooking oil as a raw material.
Article
Green & Sustainable Science & Technology
Dongming Li, Wenping Feng, Chao Chen, Shangxing Chen, Guorong Fan, Shengliang Liao, Guoqiang Wu, Zongde Wang
Summary: An effective method for synthesizing green and sustainable biodiesel from low-value vegetable oils was explored, using synthesized zinc-supported zirconia catalysts. The catalysts were able to promote the transesterification process of Litsea cubeba kernel oil, leading to the production of biodiesel that meets international standards.
Article
Engineering, Chemical
Mudheher M. Ali, Safaa M. R. Ahmed, Dhia Y. Aqar, Saba A. Gheni, Ghassan H. Abdullah, Marwan A. Mahmood, Omar A. Habeeb, Adam Harvey, Anh N. Phan
Summary: The use of cheap catalysts in the continuous transesterification of waste cooking oil to biodiesel was investigated. The dolomite catalyst showed excellent performance and stable activity, achieving a high conversion rate of 96%.
Article
Engineering, Environmental
Adeyinka Sikiru Yusuff, Afeez Olayinka Gbadamosi, Lekan Taofeek Popoola
Summary: This study developed a new eco-friendly solid catalyst from anthill-zinc modification for methanolysis of low-grade feedstock to produce biodiesel. The optimized conditions for the reaction resulted in a high biodiesel yield of 83.16%, showing good agreement with the predicted value. The catalyst exhibited better stability after being regenerated and reused for six cycles, indicating its potential for economical biofuel production from waste products.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Marko Racar, Ivana Soljic Jerdic, Zoran Glasovac, Ante Jukic
Summary: In this study, ten guanidine derivatives were investigated as catalysts for biodiesel production. The most active catalyst was selected and process optimization was conducted using a design of experiments and response surface methodology. The resulting optimal conditions were verified and the obtained biodiesel was characterized for its physicochemical and application properties.
Article
Green & Sustainable Science & Technology
Ushna Fatima, Farooq Ahmad, Muhammad Ramzan, Saba Aziz, Muhammad Tariq, Hafiz M. N. Iqbal, Muhammad Imran
Summary: This study reports the fabrication and catalytic exploitation of an in-house engineered green composite (CaO/W-Mo) using a wet-impregnation route. The composite was characterized and its catalytic potential in converting Brassica nigra oil into biodiesel was confirmed. The results showed that the composite with a catalyst loading of 0.5% achieved a transesterification efficiency of 50% under optimized reaction conditions. This suggests that the hybrid composite could be a highly beneficial and eco-friendly catalyst for industrial-scale bioenergy production.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2023)
Article
Chemistry, Multidisciplinary
Muhammad Salam Khan, Muhammad Sirajuddin, Muhammad Zubair, Hizbullah Khan, Muhammad Tariq, Shaila Mehwish, Nazif Ullah
Summary: This article focuses on the preparation of four new zinc(II) carboxylate complexes based on a specific compound, which showed good antimicrobial and anti-leishmanial activities with no toxicity. The study also evaluated the biological activities of the complexes through molecular docking studies.
BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA
(2021)
Article
Materials Science, Multidisciplinary
Muhammad Younis, Muhammad Waqas, Muhammad Awais, Yasir Abbas, Misbah Mirza, Muhammad Safdar, Muhammad Tariq
Summary: Indium-intercalated zirconium diselenide microflowers were successfully prepared using solvothermal method with the assistance of alginic acid biomolecule. The intercalation of Indium into 2D ZrSe2 nanostructures improved the photocatalytic performance for CO2 conversion.
Article
Chemistry, Multidisciplinary
Muhammad Sirajuddin, Changaiz Ahmad, Hizbuallah Khan, Imdad Ullahkhan, Muhammad Tariq, Nazif Ullah
Summary: This report describes the synthesis, characterization, and evaluation of four novel copper(II) complexes with carboxylate ligand for biological applications. The complexes show good antibacterial, antifungal, and anti-promastigote activities. They interact with DNA through an intercalative mode and have good bioavailability and drug scores.
BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA
(2022)
Article
Chemistry, Physical
Faiz Rasool, Ajaz Hussain, Khurshid Ayub, Muhammad Tariq, Khalid Mahmood, Sammer Yousuf, Muhammad Yar, Muhammad Khalid, Hafiza Saba Samreen, Mehreen Lateef, Abdul Malik
Summary: In this study, two compounds were synthesized via Claisen-Schmidt reaction. Experimental and theoretical analyses revealed their urease inhibition, antioxidant potential, DNA binding ability, and nonlinear optical properties. These compounds showed potential as NLO materials and exhibited moderate behavior in antioxidant assays and urease inhibition.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Multidisciplinary
Sonia Rani, Rabbia Khan, Muhammad Tariq, Zahoor Ahmad, Hafiz M. Asif, Muhammad A. Khan
Summary: This study highlights the significance of lifetime decay in the field of nonlinear optics. The results demonstrate a positive correlation between lifetime decay and nonlinear optical parameters. Moreover, one of the hybrids exhibits superior performance compared to the others.
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
(2022)
Review
Energy & Fuels
Rida Nayab, Muhammad Imran, Muhammad Ramzan, Muhammad Tariq, Muhammad Babar Taj, Muhammad Nadeem Akhtar, Hafiz M. N. Iqbal
Summary: Biodiesel, as a promising alternative fuel, has been thoroughly reviewed in this paper, covering aspects such as feedstocks, production methods, properties, advantages, disadvantages, economic viability, and future prospects.
Article
Chemistry, Inorganic & Nuclear
Hafiza Fareeha Ashfaq, Sonia Rani, Hafiz Imran Ahmad Qazi, Muhammad Tariq, Muhammad Ali Khan, Hafiz Muhammad Asif
Summary: This study investigates the performance of two synthesized porphyrin-polyoxometalate hybrids in terms of non-linear optical activities and lifetime decay. The results show that DiT-DiPP@Di-WDP with two polyoxometalate groups exhibits superior properties compared to T-TriPP@WDP.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Hafiza Fareeha Ashfaq, Khalil Ahmad, Muhammad Tariq, Hafiz Muhammad Asif, Muhammad Mahboob Ahmed, Salah M. El-Bahy, Mohamed M. Ibrahim, Islam H. El Azab
Summary: A new metalloporphyrin and its polymeric hybrid with a polyoxometalate have been synthesized and characterized. The hybrid showed higher photodegradation efficiency and fluorescence quenching compared to the metalloporphyrin alone, indicating enhanced electron transfer and generation of active species. The study provides insights into the design of efficient photocatalytic materials.
Article
Materials Science, Multidisciplinary
Uzma Saleem, Muhammad Tariq, Muhammad Nadeem, Shahid Hussain, Muhammad Ali Khan, Hafiz Muhammad Asif, Ajaz Hussain, Gaber A. M. Mersal, Islam H. El Azab
Summary: In this study, two new efficient and ecofriendly hybrids based on Polyoxometalates-porphyrin were synthesized and their thin films were designed for use in light conversion devices. The optical and electrical properties of the films were analyzed, and it was found that they show promising potential in optoelectronic applications such as solar cells and photovoltaic cells.
Article
Chemistry, Multidisciplinary
Zeshan Munawar, Sadia Ghazanfar, Hafiz Muhammad Asif, Muhammad Ali Khan, Muhammad Sirajuddin, Muhammad Tariq, Jafir Hussain Shirazi, Ali Haider
Summary: In this study, a novel photocatalytic material ZnO-CdO-Pr2O3 heterostructured ternary nanocomposite was prepared using co-precipitation method. The functional groups, surface morphology, crystal phase purity, and elemental composition of the prepared nanocomposite were investigated using FT-IR, SEM, XRD, and EDX techniques, respectively. The ternary nanocomposite exhibited a direct energy bandgap of 1.64 eV and showed high efficiency in degrading methylene blue and rhodamine B dyes under sunlight illumination. A first order kinetics model was used to describe the adsorption kinetics of dyes, and species trapping experiments indicated the involvement of O-2(.-) and OH. radicals in the degradation process.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Rabbia Khan, Muhammad Tariq, Kauser Hussain Shah, Sonia Rani, Nahid A. Osman, Hafiz Muhammad Asif, Saima Mehar, Abdullah K. Alanazi, Hala M. Abo-Dief
Summary: The combination of polyoxometalates (POMs) and tin-based porphyrin has opened up new directions in the study of biological activities. A new sandwich type covalently attached porphyrin SnTPP-Di-Tris and Anderson POM-porphyrin polymeric hybrid PolySnP@POM were synthesized and characterized. These compounds were evaluated for drug delivery, DNA binding, protein binding, and antibacterial studies. PolySnP@POM showed higher drug loading efficiency, stronger DNA binding affinity, and better antibacterial activity compared to SnTPP-Di-Tris.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Green & Sustainable Science & Technology
Muhammad Zeeshan, Sadia Ghazanfar, Muhammad Tariq, Hafiz Muhammad Asif, Ajaz Hussain, Muhamamd Usman, Muhammad Ali Khan, Khalid Mahmood, Muhammad Sirajuddin, Muhammad Imran
Summary: A novel tri-phase NiO-CdO-Nd2O3 nanocomposite was synthesized and used as a heterogeneous catalyst in transesterification reaction. The nanocomposite was characterized using various techniques to explore its functional, structural morphological and compositional properties. The oval shaped nanoparticles exhibited good catalytic activity in biodiesel synthesis. The effect of different parameters on biodiesel yield was studied and optimized, and a high yield of 80% was achieved under the optimum conditions.
Article
Microbiology
Ahmad Kaleem Qureshi, Umar Farooq, Qaiser Shakeel, Sajjad Ali, Sarfraz Ashiq, Sohail Shahzad, Muhammad Tariq, Mahmoud F. Seleiman, Aftab Jamal, Muhammad Farhan Saeed, Barbara Manachini
Summary: The study focuses on the synthesis of silver nanoparticles using plant extract as eco-friendly agents and their antifungal activity against Fusarium oxysporum f.sp. lycopersici. The synthesized silver nanoparticles showed significant antifungal efficacy and the combination of plant extract and smaller particle size contributed to the highest inhibitory effect. This study highlights the potential of using plant extracts as reducing and capping agents for the green synthesis of antifungal silver nanoparticles.
Article
Chemistry, Multidisciplinary
Muhammad Sirajuddin, Saqib Ali, Hizbullah Khan, Muhammad Tariq
Summary: This study successfully synthesized and characterized a series of ligands and their complexes. The structures and geometries were determined by spectroscopic and X-ray diffraction techniques. The interaction between the compounds and DNA was studied experimentally and computationally, revealing their binding modes.
JOURNAL OF CHEMICAL SCIENCES
(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.