Article
Energy & Fuels
Olayomi Abiodun Falowo, Eriola Betiku
Summary: This study developed a new green heterogeneous alkali catalyst from cocoa, kola nut, and fluted pumpkin wastes for transesterification of yellow oleander-rubber seed oil blend. By optimizing catalyst concentration, temperature, and time, high yields of biodiesel were achieved, demonstrating the potential for sustainable and economic biodiesel production using agricultural waste materials.
Article
Green & Sustainable Science & Technology
Himmat Singh, Amjad Ali
Summary: A heterogeneous catalyst of K+ impregnated tungstophosphoric acid supported on graphene oxide was used for one pot esterification and transesterification of waste oil (WO). The catalyst structure was characterized by XRD, and its composition was confirmed by XPS analysis. TPD technique showed the presence of acidic and basic sites on the catalyst surface. Under optimized conditions, >98.5% biodiesel was produced within 1.5 h using a catalyst loading of 10 wt% (concerning oil), methanol: oil molar ratio of 9:1, and a reaction temperature of 65 degrees C. The catalyst could be recycled six times with metal levels in the reaction mixture below 2 ppm, and it showed activity even in the presence of free fatty acid and moisture contents.
Article
Green & Sustainable Science & Technology
Divya Bojaraj, Aryasomayajula Venkata Satya Lakshmi Sai Bharadwaj, Meera Sheriffa Begum Khadhar Mohamed, Anantharaman Narayanan
Summary: In this study, a modified heterogeneous base catalyst Al(NO3)(3)/calcined marble was used to successfully convert Karanja oil to biodiesel through transesterification, achieving high yields and conversion rates under optimal conditions.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2021)
Article
Engineering, Environmental
Hui Li, Huijun Chu, Xiaoling Ma, Guirong Wang, Fengsheng Liu, Min Guo, Wangpeng Lu, Shoujun Zhou, Mingzhi Yu
Summary: Sulfuric zirconia is a potential heterogeneous acid catalyst for esterification in biodiesel production, but faces challenges in catalytic stability. By using UiO-66 and ammonium sulfate, a high efficient acid catalyst was synthesized, with 'two-stage calcination' to enhance stability. The catalyst prepared under nitrogen atmosphere showed higher catalytic activity, achieving 96.2% oleic acid conversion at optimum conditions, and the second calcination reduced conversion decrement by 66.25% within five cycles.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Harsh Dadhania, Dipak Raval, Abhishek Dadhania
Summary: The study synthesized a magnetically separable ionic liquid catalyst and evaluated its catalytic activity in biodiesel production by assessing the impact of different experimental parameters. The research also explored the effects of various alcohols and fatty acids on the esterification reaction. Additionally, the catalyst showed good reusability by being able to be used for up to six reaction cycles.
Article
Thermodynamics
Ihtisham Wali Khan, Abdul Naeem, Muhammad Farooq, Israf Ud Din, Zahid Ali Ghazi, Tooba Saeed
Summary: A novel Na-SiO2@CeO2 heterogeneous catalyst was designed for sustainable biodiesel production from wild olive oil, showing high efficiency and stability through various spectroscopic characterization techniques.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Ankita Sarkar, Parineeta Das, Ikbal Bahar Laskar, Sethumathavan Vadivel, Amrit Puzari, Bappi Paul
Summary: A green heterogeneous catalyst was synthesized using biomass Parkia speciosa via calcination at 700 degrees C for biodiesel synthesis. Characterization techniques were conducted to analyze the catalyst. The results showed that potassium and calcium oxides and carbonates served as active catalytic sites, resulting in high biodiesel yield. The catalyst remained efficient after five successive cycles, indicating its potential as an alternative for conventional homogeneous catalysts.
Article
Green & Sustainable Science & Technology
Zayed Al-Hamamre, Arwa Sandouqa, Basel Al-Saida, Reyad A. Shawabkeh, Mohammad Alnaief
Summary: A solid heterogeneous catalyst was prepared by impregnation of oil shale ash with KNO3 and subsequent calcination. The effects of different preparation conditions on waste cooking oil to biodiesel conversion were investigated. The characterization of the catalyst and the quantification of the produced biodiesel were performed using various analytical techniques.
Article
Energy & Fuels
Phiwe Charles Jiyane, Kaniki Tumba, Paul Musonge
Summary: Optimization studies on the esterification and transesterification of oil from Croton gratissimus grains were conducted using response surface methodology and analysis of variance, showing that catalyst concentration and methanol-to-oil ratio have significant impacts on the yield and purity of the biodiesel product.
FRONTIERS IN ENERGY RESEARCH
(2021)
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
Biochemistry & Molecular Biology
Balkis Hazmi, Mahnoush Beygisangchin, Umer Rashid, Wan Nur Aini Wan Mokhtar, Toshiki Tsubota, Ali Alsalme, Chawalit Ngamcharussrivichai
Summary: This study utilized the by-product glycerol from previous transesterification as a precursor for acid catalyst synthesis in biodiesel production. Sulfonated glycerol-SO3H and glycerol-ClSO3H were synthesized through sulfonation with sulfuric acid and chlorosulfonic acid, respectively. Various analytical techniques were used to characterize the synthesized catalysts, which showed mesoporous structures but low surface areas. The acidity of the catalysts was sufficient for catalyzing biodiesel production, and optimal reaction conditions were determined. The catalysts could be reused for three reaction cycles but experienced deactivation.
Article
Engineering, Chemical
Mona A. Naghmash, Sahar A. El-Molla, Hala R. Mahmoud
Summary: This study investigates the chlorinated SnO2 (xClSnO (Ammonia)) as a solid acid catalyst for stearic acid esterification, and compares the effects of different precipitating agents and chlorine ions on the properties of SnO2. Chlorinated SnO2 exhibits higher total acidity and catalytic activity.
ADVANCED POWDER TECHNOLOGY
(2022)
Review
Engineering, Chemical
Fatai A. Aderibigbe, Suleiman Shiru, H. B. Saka, M. K. Amosa, Sherif Ishola Mustapha, Mohammed Alhassan, Ayoade L. Adejumo, Morufudeen Abdulraheem, R. U. Owolabi
Summary: The demand for cleaner fuels has led to the exploration of alternative technologies such as renewable fuels. Research into second generation biofuel feedstocks holds promise for the future of cleaner energy solutions.
CHEMBIOENG REVIEWS
(2021)
Article
Chemistry, Applied
Bheechanat Duangdee, Dussadee Rattanaphra, Sasikarn Nuchdang, Anusith Thanapimmetha, Maythee Saisriyoot, Penjit Srinophakun
Summary: Solid mixed rare earth catalysts (MREEs) were synthesized by co-precipitation at different pH values. The catalysts co-precipitated at pH 12 showed high contents of active elements for facilitating esterification and transesterification reactions. The catalyst synthesized at pH 12 and calcined at 300 degrees C exhibited high catalytic activity and conversion rates in both esterification and transesterification reactions.
JOURNAL OF RARE EARTHS
(2023)
Article
Energy & Fuels
Ihtisham Wali Khan, Abdul Naeem, Muhammad Farooq, Zahid Ali Ghazi, Tooba Saeed, Fouzia Perveen, Tabassum Malik
Summary: This study investigates the production of sustainable biodiesel from non-edible wild olive oil using a novel Na/SiO2/TiO2 heterogeneous catalyst. The catalyst was synthesized and evaluated using various spectroscopic techniques. The optimal reaction conditions were determined, and the synthesized biodiesel was analyzed and tested for its physiochemical properties. Furthermore, the commercial viability of the designed catalyst was assessed.
Article
Energy & Fuels
Kongkona Saikia, Abiram Karanam Rathankumar, Betsy Ann Varghese, Shravani Kalita, Sivanesan Subramanian, Swarnalatha Somasundaram, Vaidyanathan Vinoth Kumar
Summary: An integrated approach was defined for high yield of 5-hydroxymethylfurfural (HMF) from inulin through immobilized enzymes and catalysts, achieving a yield of 96.58%. Both the immobilized enzyme and catalyst showed high operational stability, with the enzyme recycled up to 10 cycles releasing 9.2 g/L of fructose at the 10th cycle and the catalyst recycled up to 10 cycles producing 5.4 g/L of HMF at the 10th cycle.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Pharmacology & Pharmacy
N. Dhanalakshmi, T. Priya, S. Thennarasu, S. Sivanesan, N. Thinakaran
Summary: A simple and reliable strategy was proposed to engineer the glutathione grafted graphene oxide/ZnO nanocomposite as electrode material for the high-performance piroxicam sensor. The nanocomposite modified electrode exhibited the highest electrocatalytic activity towards piroxicam, with good linear responses, low detection limit, and high sensitivity. The sensor showed excellent selectivity, reproducibility, and long-term stability, effectively ignoring interfering candidates commonly existing in pharmaceutical tablets and human fluids even at higher concentrations.
JOURNAL OF PHARMACEUTICAL ANALYSIS
(2021)
Review
Chemistry, Multidisciplinary
Salma Aathika Abdur Rawoof, P. Senthil Kumar, Dai-Viet N. Vo, Kubendran Devaraj, Yuvarani Mani, Thiruselvi Devaraj, Sivanesan Subramanian
Summary: The biotransformation of organic wastes into high value-added products, particularly in the production of lactic acid, has gained significant attention. However, challenges such as achieving enhanced yield and productivity in large-scale fermentation still exist. Various solutions have been proposed, including the use of cheap substrates, improving yield and productivity, and eliminating inhibitors.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Review
Chemistry, Multidisciplinary
Salma Aathika Abdur Rawoof, P. Senthil Kumar, Dai-Viet N. Vo, Sivanesan Subramanian
Summary: This article discusses factors influencing the production of biohydrogen and biomethane, as well as methods to improve efficiency, such as co-digestion, pre-treatment, application of additives, and optimal digester design.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Environmental Sciences
D. Thiruselvi, M. Yuvarani, A. Salma, Y. Arafath, D. Jagadiswary, M. A. Kumar, D. Anuradha, P. Shanmugam, S. Sivanesan
Summary: The study utilized Vitex negundo leaf extract as a reducing agent to synthesize iron nanocatalyst, optimizing synthesis parameters and characterizing the properties of the synthesized VN-FeNCs. These VN-FeNCs were then used in anaerobic digestion of sludge, leading to improved methane yield and significant reduction in chemical oxygen demand and volatile solids. The optimal conditions for good biogas production using VN-FeNCs were pH 7.0 and 0.2 g/L of VN-FeNCs on the 6th day. Ultimately, the study showed a remarkable reduction in digestion time which could enhance the lifespan of biogas digesters and reduce maintenance costs.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Review
Chemistry, Physical
Devaraj Thiruselvi, Ponnusamy Senthil Kumar, Madhava Anil Kumar, Chyi-How Lay, Salma Aathika, Yuvarani Mani, D. Jagadiswary, Anuradha Dhanasekaran, Palaniyandi Shanmugam, Subramanian Sivanesan, Pau-Loke Show
Summary: The review discusses the significance of renewable biogas production technology in reducing greenhouse gas emissions and addressing global warming, highlighting the importance of sustainable techniques in meeting energy demands. Anaerobic digestion for biogas production from waste is recognized as a leading green energy solution for environmental management and meeting global energy challenges.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Salma Aathika Abdur Rawoof, Ponnusamy Senthil Kumar, Kubendran Devaraj, Thiruselvi Devaraj, Sivanesan Subramanian
Summary: The study investigated the production of lactic acid from food waste using different microbial strains, and found that Lacobacillus manihotivorans DSM 13343 had the highest lactic acid concentration. Additionally, the study achieved high lactic acid production and substrate utilization in a shorter processing time and reactor volume.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Environmental Sciences
Ramya Thangamani, Premkumar Manickam Periyaraman, Amudha Thanarasu, Karthikeyan Velayutham, Anuradha Dhanasekaran, Sivanesan Subramanian
Summary: The degradation of Coragen was tested using an electrooxidation process with graphite electrodes, and the efficiency of removing bromide using nano-hydroxyapatite as a sorbent was examined. The electrolytic process showed maximal removal efficiencies of 96% for COD, 50% for chloride, and 99% for bromide at pH 5, a current density of 7.5 mA cm(-2), and an electrolysis time of 120 minutes.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Biochemical Research Methods
Kongkona Saikia, Hridya Radhakrishnan, Abiram Karanam Rathankumar, Siva Gokul Senthil Kumar, Shravani Kalita, Jenet George, Sivanesan Subramanian, Vaidyanathan Vinoth Kumar
Summary: In this study, mesoporous silica microspheres were used as a support for the immobilization of inulinase from Aspergillus brasiliensis MTCC 1344 through cross-linking. The optimized conditions led to a high immobilization yield of inulinase, resulting in efficient hydrolysis of inulin to produce high-fructose syrup at a high temperature.
IET NANOBIOTECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Rajaji Pavadai, Arunjegan Amalraj, Sivanesan Subramanian, Panneerselvam Perumal
Summary: The study developed a three-fluorophore-labeled Y-shaped DNAzyme combined with a 3D MOF-MoS2NB for highly selective detection of Hg2+, Ni2+, and Ag+ ions, achieving detection limits of 0.11 nM, 7.8 μM, and 0.25 nM, respectively. The sensor showed improved sensitivity compared to previous biosensors and has potential applications in real water sample analysis with interfering contaminants.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Environmental Sciences
Amudha Thanarasu, Karthik Periyasamy, Sivanesan Subramanian
Summary: In the near future, renewable energy generation from electromethanogenesis is expected to become more cost-effective. By integrating anaerobic digestion with microbial electrolysis system, it is possible to upgrade biogas to 100% methane for power generation. Further research and scaling up of the microbial electrolysis system in anaerobic digestion is essential to achieve 100% methane production for power generation.
Article
Energy & Fuels
Yuvarani Mani, Rajkumar Ramakrishnan, P. Senthil Kumar, Thiruselvi Devaraj, Deva Rajendran, Arunbalaji Venkatalakshmi Narasimman, Roobak Parthiban Srinivasan, Subramanian Sivanesan
Summary: An insulated bench-scale batch reactor was designed for the production of methanol using Zr-FTO catalyst through the sub-critical water method, achieving high conversion and selectivity, which is of great significance in the field of sustainable energy.
Review
Energy & Fuels
Jason Thamizhakaran Stanley, Amudha Thanarasu, P. Senthil Kumar, Karthik Periyasamy, Subramanian Raghunandhakumar, Premkumar Periyaraman, Kubendran Devaraj, Anuradha Dhanasekaran, Sivanesan Subramanian
Summary: This review highlights the importance of anaerobic digestion in biomethane production, focusing on effective pre-treatment methods for lignocellulosic biomass. Physical, chemical, and biological methods can all improve the yield and quality of biomethane. Understanding the environmental and economic impact of biomethane pre-treatment methods provides insights into the importance and demand for anaerobic biomethane production systems in the future.
Review
Green & Sustainable Science & Technology
B. Manimekalai, R. Arulmozhi, Mariselvam Ammasi Krishnan, S. Sivanesan
Summary: The COVID-19 epidemic poses a significant threat to global public health and socio-economic development. Despite global isolation and shutdown efforts, the number of infected patients continues to be alarmingly high. This research focuses on an interdisciplinary and technical approach to address the challenges of wastewater treatment in the context of COVID-19 and future epidemic cycles.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2023)
Article
Chemistry, Physical
Arunjegan Amalraj, Rajaji Pavadai, Sivanesan Subramanian, Panneerselvam Perumal
Summary: We have developed a new sensor probe for the simultaneous detection of Hg2+ ions and chloramphenicol (CAP) by integrating FAM and TAMRA fluorophore labelled phosphorothioate RNA modified *ssDNA and CuO@PDA-MoS2 nanosphere. The probe demonstrated high sensitivity and selectivity with a wide linear range and low limit of detection. This approach provides a simpler, more cost-effective method for the detection of Hg2+ and CAP in real water samples.
APPLIED SURFACE 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.
