Article
Energy & Fuels
Larissa Noemi Silva Freitas, Fabiana P. de Sousa, Alessandra Rodrigues de Carvalho, Vanya M. D. Pasa
Summary: Bio-hydrocarbons were synthesized from macauba oils to produce low-cost biofuels for different transport sectors, with deoxygenation reactions achieving 100% conversion using beta zeolite catalyst in 3 hours. The use of already hydrolyzed macauba pulp oil and 10 bar H-2 resulted in higher percentage of hydrocarbons, offering a cost-effective alternative for large-scale biofuel production.
Article
Thermodynamics
Elaine Siew Kuan Why, Hwai Chyuan Ong, Hwei Voon Lee, Wei-Hsin Chen, N. Asikin-Mijan, Mahendra Varman
Summary: The research shows that 8% Pd/C catalyst with palm kernel oil after deoxygenation can achieve the best yield and fuel selectivity. The blending of 20% volume of palm kernel oil-derived bio-jet fuel with Jet A-1 fuel is considered the most promising ratio, as it has the most favorable low temperature fluidity and good combustion characteristics.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
N. Asikin-Mijan, G. AbdulKareem-Alsultan, M. S. Mastuli, A. Salmiaton, Mohamad Azuwa Mohamed, H. V. Lee, Y. H. Taufiq-Yap
Summary: Bifunctional Co-W catalysts were prepared for the catalytic deoxygenation-cracking of tung oil to produce jet fuel fractions. The CoW/SA catalyst showed the highest activity and outperformed the monometallic Co and W catalysts. It was found that excessively high metal dosages led to over cracking, while lower metal dosages effectively controlled over cracking. The resulting TO-jet fuel had excellent physicochemical properties and combustion characteristics.
Article
Forestry
Erik Budsberg, Nathan Parker, Varaprasad Bandaru, Renata Bura, Rick Gustafson
Summary: This research investigates the potential environmental impacts of the bio-jet fuels industry by using spatial analysis and life cycle assessment. The results show that the conversion of land to grow poplar trees for fuel production varies by region, and it is essential to understand these impacts before developing the biofuel industry.
Article
Chemistry, Analytical
Megan X. Y. Ravindran, N. Asikin-Mijan, H. C. Ong, Darfizi Derawi, M. R. Yusof, M. S. Mastuli, H. Lee, W. N. A. S. Wan Mahmood, M. S. Razali, G. Abdulkareem Al-Sultan, Y. H. Taufiq-Yap
Summary: This study investigated the catalytic reduction of oxygen-containing compounds in palm kernel oil using a microwave system approach. The use of Raney nickel and magnetite activated carbon-based catalysts significantly increased the yield and selectivity of bio-jet fuel. The study also revealed the important role of the catalyst's porous structure and active oxygen-containing groups in enhancing the deoxygenation reaction and improving the catalyst's reusability.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Multidisciplinary
Xiangchen Kong, Chao Liu, Yuyang Fan, Ming Li, Rui Xiao
Summary: A copper catalyst modified with propanoic acid was developed for the hydrodeoxygenation (HDO) of crude lignin bio-oil to jet fuel precursors. The modified catalyst exhibited exceptional catalytic performance, improving the yield of jet fuel precursors and reducing the double bond equivalence and aromaticity index of the products. These findings suggest promising avenues for increasing the efficiency of heterogeneous catalysts in the conversion of lignin-based bio-oil to alternative fuels.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Energy & Fuels
Junwei Liao, Quanwang Zhong, Juwen Gu, Songbai Qiu, Qingwei Meng, Qian Zhang, Tiejun Wang
Summary: A new catalytic process for synthesizing jet fuel hydrocarbons from bio-ethanol was developed. This process involves the coupling of ethanol molecules and the hydrodeoxygenation of heavy alcohols to obtain high-carbon alcohols, which can be separated into different carbon chain lengths and then converted into jet fuel hydrocarbons with branched carbon skeletons.
Article
Energy & Fuels
Junhao Sun, Yingying Yu, Chao Mu, Xuan Guo, Yujun Zhao, Shengping Wang, Xinbin Ma
Summary: A catalyst with better isomerization performance was proposed for the hydrotreatment of long-chain alkanes to produce jet fuel component in the two-step hydrogenation process. By gradually optimizing the isomerization performance through the design of catalysts with different acid strength, diffusion performance, and intimacy between Pt and acid bifunctional sites, the yield of isomer product and jet fuel component was constantly improved. The yolk-shell WHSS@Pt catalyst with simultaneous optimization of weak acid, strong diffusion performance, and minor-nanoscale intimacy between bifunctional sites achieved the highest yield of jet fuel component (37 wt.%).
Review
Green & Sustainable Science & Technology
Xu Liu, Yang Guo, Donghai Xu, Qingqing Guan
Summary: This paper reviews the recent advances in hydrothermal catalytic deoxygenation of microalgal bio-crude oil. The specific role of high-temperature water in the deoxygenation process is discussed, and the effects of temperature, reaction time, solvent, and hydrothermal processing technology on deoxygenation are illustrated. Moreover, the catalytic activity and mechanism of metal and acid-based catalysts involved in deoxygenation under hydrothermal conditions are elaborated. This review provides a general scientific reference for further studies on the hydrodeoxygenation of microalgae bio-oil from hydrothermal liquefaction (HTL).
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Applied
Masato Kouzu, Minato Kojima, Katsuyuki Mori, Shinya Yamanaka
Summary: This research investigated the catalytic deoxygenation of rapeseed oil catalyzed by Pt/Al2O3 under hydrothermal conditions, aiming to produce renewable hydrogen through APR. Using Pt/SBA-15 catalyst increased hydrocarbon yield, and preliminary APR testing was conducted to evaluate in-situ hydrogen production. No previous studies have extensively explored the insitu hydrogen production from APR in the context of catalytic hydrothermal deoxygenation.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Agricultural Engineering
Sergio Martinez-Villarreal, Antoine Breitenstein, Philippe Nimmegeers, Pablo Perez Saura, Bingxin Hai, Justice Asomaning, Ali Alizadeh Eslami, Pieter Billen, Steven Van Passel, David C. Bressler, Damien P. Debecker, Claire Remacle, Aurore Richel
Summary: In the process of transitioning towards carbon-neutral economies, the aviation sector is a key contributor to greenhouse gas emissions due to its dependence on fossil fuels. As an alternative, biofuels derived from microalgae are being developed due to their potential for lipid accumulation. This review discusses the development status, opportunities, and challenges of technologies that can transform microalgae into aviation fuels, along with an assessment of the present techno-economic feasibility. Further developments are needed to reduce the costs and improve the overall economics of microalgae cultivation and harvesting.
BIOMASS & BIOENERGY
(2022)
Article
Chemistry, Physical
Abdulkareem Alsultan, Nurul Asikin-Mijan, Laith Obeas, Aminul Islam, Nasar Mansir, Siow Teo, Siti Razali, Maadh Nassar, Surahim Mohamad, Yun Taufiq-Yap
Summary: Green diesel, a substitute for biodiesel, was innovated using deoxygenation technology. It showed high stability and selectivity, making it a promising alternative fuel.
Article
Chemistry, Applied
Il-Ho Choi, Hye-Jin Lee, Kyung-Ran Hwang
Summary: The effects of La addition on Pt-La/B38 catalysts for low-temperature isomerization of n-dodecane were investigated. La co-impregnation with Pt reduced the Pt size and improved the uniformity. The reasonable arrangement of active sites caused by La loading resulted in higher iso-C12 yield.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Energy & Fuels
Shiyu Yuan, Zhiqiang Liu, Guozhu Liu
Summary: A high-gravity deoxygenation method using rotating packed bed was proposed in this study to enhance the gas-liquid mass transfer process of jet fuels. The effects of operation parameters on deoxygenation efficiency were systematically studied. This method showed remarkable advantages and is of great significance for the development of jet fuel deoxygenation technology.
Article
Energy & Fuels
Juan Carlos Chavarria-Hernandez, Jocsan Axel Falcon-Valdes, Andres Eduardo Pedrero-Alvarez, Tanit Toledano-Thompson, Luis Felipe Barahona-Perez, Liliana Alzate-Gaviria, Raul Tapia-Tusell, Erik Polanco-Lugo, Ruby Valdez-Ojeda
Summary: The study suggests that using SDW to cultivate microalgae can produce high-quality liquid biofuels, with molasses being a preferable carbon source and HDO reaction being the main transformation route.
Article
Engineering, Environmental
Cristiane Almeida Scaldaferri, Vanya Marcia Duarte Pasa
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Green & Sustainable Science & Technology
C. A. Scaldaferri, V. M. D. Pasa
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2019)
Article
Chemistry, Physical
Cristiane A. Scaldaferri, Puridej Warakunwit, Vanya Pasa, Daniel E. Resasco
APPLIED CATALYSIS B-ENVIRONMENTAL
(2019)
Article
Energy & Fuels
Julia de Barros Dias Moreira, Daniel Bastos de Rezende, Vanya Marcia Duarte Pasa
Article
Engineering, Environmental
Maria Flavia Rodrigues Starling Araujo, Poliana Lima Cardoso, Giulia Luiza Rindoni Souza, Claudia Cristina Cardoso, Vanya Marcia Duarte Pasa
Summary: This study utilizes ethanol and fusel oil as solvents for liquefaction of sugarcane bagasse to produce biofuels. The use of fusel oil as a solvent yields higher conversion rates with lower biochar content in the resulting biocrude. Both biochar and biocrude have high heating values and stability, suitable for use as solid fuel.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Green & Sustainable Science & Technology
Maria F. R. S. Araujo, Poliana C. Lima, Claudia C. Cardoso, Vanya M. D. Pasa
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Energy & Fuels
Larissa Noemi Silva Freitas, Fabiana P. de Sousa, Alessandra Rodrigues de Carvalho, Vanya M. D. Pasa
Summary: Bio-hydrocarbons were synthesized from macauba oils to produce low-cost biofuels for different transport sectors, with deoxygenation reactions achieving 100% conversion using beta zeolite catalyst in 3 hours. The use of already hydrolyzed macauba pulp oil and 10 bar H-2 resulted in higher percentage of hydrocarbons, offering a cost-effective alternative for large-scale biofuel production.
Article
Engineering, Environmental
Nubia Rangel Candido, Marcos J. Prauchner, Adriana de Oliveira Vilela, Vanya M. D. Pasa
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2020)
Article
Energy & Fuels
Bruna Eloi do Amaral, Daniel Bastos de Rezende, Vanya Marcia Duarte Pasa
Article
Chemistry, Multidisciplinary
Claudia Cristina Cardoso, Alexsandro S. Cavalcanti, Ricardo O. Silva, Severino Alves Junior, Fabiana P. de Sousa, Vanya Marcia D. Pasa, Santiago Arias, Jose G. A. Pacheco
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2020)
Article
Engineering, Chemical
Daniel B. de Rezende, Maira P. de O. Rocha, Vanya M. D. Pasa
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
(2019)
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.