Article
Chemistry, Applied
Kevin Mis Solval, Alexander Chouljenko, Chandra Theegala, Subramaniam Sathivel
Summary: Neutralization, transesterification, and adsorption processes were used to convert high-viscosity crude catfish oil (CO) into low-viscosity PBIO with promising physicochemical attributes. The study demonstrated the feasibility of using PBIO as a viable alternative biofuel.
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
(2021)
Article
Energy & Fuels
Suherman Suherman, Ilmi Abdullah, Muhammad Sabri, Arridina Susan Silitonga
Summary: The aim of this study is to analyze the physicochemical properties of biodiesel made from a blend of waste cooking oil and Schleichera oleosa (SO) oil. It was found that a blend ratio of 70% waste oil and 30% SO oil improved the cold flow properties and flash point of the biodiesel, and the use of catalyst also had an impact on the reaction process.
Article
Engineering, Mechanical
Sunil Jayantha Hettiarachchi, Suela Kellici, Matthew Kershaw, James Bowen
Summary: This study investigated the potential of coconut oil (CCO) as a lubricant and formulated different blends with additives to enhance its physicochemical characteristics. The results showed that blending CCO with additives effectively improved its suitability and thermal stability, offering new possibilities for environmentally friendly and renewable lubricants.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Chemistry, Applied
Zhen Zhang, Jing Ye, Wan Jun Lee, Casimir C. Akoh, Aijun Li, Yong Wang
Summary: In this study, interesterification of palm-based oil using different catalysts and temperatures was investigated. The results showed that enzymatic interesterification fats had lower solid fat content and higher crystallization onset temperature compared to chemical interesterification fats, indicating faster crystallization and smaller crystal size. The study contributes to understanding the differences between chemical interesterification and enzymatic interesterification fats.
Article
Food Science & Technology
Yijun Liu, Leshi Li, Qiuyu Xia, Lijing Lin
Summary: Cashew nut kernel oil (CNKO) was analyzed for its lipid species, composition, and relative content using UPLC-TOF-MS/MS. The physicochemical properties, functional group structure, and oxidation stability of CNKO at different pressing temperatures were characterized. The results showed that CNKO mainly consisted of oleic acid, linoleic acid, stearic acid, and palmitic acid. The pressing temperature had a significant effect on the physicochemical properties and oxidative stability of CNKO. This study provided basic data for cashew kernel processing, quality evaluation, and functional studies.
Article
Food Science & Technology
Yingying Wu, Linlin Wang, Xiuzhen Ding, Wentao Wang, Luping Zhao
Summary: In this study, high internal phase emulsions (HIPEs) were successfully prepared using pumpkin seed oil bodies (PSOBs) as the base, with different oil phase percentages resulting in different droplet shapes and gel-like properties. Higher oil phase percentages led to better viscoelasticity and storage modulus, but worse thermal stability.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Michael Kass, Brian Kaul, Beth Armstrong, Jim Szybist, Vladislav Lobodin
Summary: This study evaluates the rheological and combustion properties of a very low sulfur fuel oil (VLSFO) with added biodiesel. The results show that biodiesel significantly reduces viscosity and improves boundary lubricity. In terms of combustion, 15-20 wt% biodiesel additions mitigate premixed-burn spike phenomena and improve combustion delay time and precombustion burn period. Therefore, biodiesel is suitable for use as a marine fuel for engines that operate on VLSFO.
Article
Agriculture, Multidisciplinary
Xu Zhao, Kaili Wang, Nianxu Dou, Huanyu Zhao, Dongdong Hou, Xuan Wei, Zhanmei Jiang, Juncai Hou
Summary: This study found that the aggregation and oxidation of laccase-crosslinked beet pectin high-oil soybean oil body (HOSOB) and high-protein soybean oil body (HPSOB) emulsions were severe under acidic conditions, while the flocculation was reduced and stability was improved under neutral and weakly alkaline conditions. Additionally, the pH conditions also had a significant impact on the particle size, surface hydrophobicity, and stability of the emulsions.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2023)
Article
Chemistry, Applied
Dong-Min Shin, Jong Hyeok Yune, Tae-Kyung Kim, Yea Ji Kim, Hyuk Cheol Kwon, Do Hyun Kim, Chang Hee Jeong, Yun-Sang Choi, Sung Gu Han
Summary: The study showed that duck fat could replace soybean oil in margarine, reducing the use of FHSBO while improving the quality characteristics of margarine. Duck fat-added margarines exhibited better oxidative stability and sensory properties compared to the control.
Review
Chemistry, Physical
Masoumeh Marhamati, Golnaz Ranjbar, Mitra Rezaie
Summary: This study focuses on the effects of emulsifiers on the physicochemical stability of oil-in-water nanoemulsions, considering factors such as preparation methods, nature, concentration, molecular weight, and type of the food matrix. Emulsifiers play a key role in the formation and stability of food emulsions through adsorption at the oil-water interface, contributing to the production of stable nanoemulsion-based structures. Further research is needed to identify novel emulsifiers or combinations for food applications.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Energy & Fuels
Huseyin Camur, Ebaa Alassi
Summary: The main aim of this study was to improve the oxidation stability and cold flow properties of biodiesel produced from waste frying/cooking oil and palm oil. The results showed that waste frying oil and canola oil biodiesel can be used as antioxidants to enhance biodiesel stability, and canola oil biodiesel can also improve the cold flow properties of palm biodiesel.
Article
Chemistry, Applied
Min Liu, Chen Yang, Enchao Liu, Fang Zhang, Xianghong Meng, Bingjie Liu
Summary: This study focused on developing ALA nanoemulsion system to address stability and oxidation issues. Results showed that under high temperature and metal ion conditions, stability of the nanoemulsion was impacted, while ionic strength, pH, and light had minimal effects. Vitamin E was found to be more effective in preventing lipid oxidation compared to vitamin C in nanoemulsions.
Article
Food Science & Technology
Xiujuan Li, Mimi Guo, Yalin Xue, Zhangqun Duan
Summary: This study evaluated the effect of different extraction methods on the quality of samara oil, and found that the extraction methods affected the physicochemical properties, chemical composition, and antioxidant activities of samara oil except for fatty acid composition and γ-tocopherol. The highest values of bioactive compounds and antioxidant activities were found in the oil extracted with acetone. Correlation analysis results showed that the antioxidant activities of samara oil were positively correlated with bioactive compounds. Acetone could be used as an effective extraction method for samara oil.
Article
Green & Sustainable Science & Technology
Mateus Cristian Gomes Souza, Marcelo Firmino de Oliveira, Andressa Tironi Vieira, Anizio Marcio de Faria, Antonio Carlos Ferreira Batista
Summary: Biodiesel produced from Crambe abyssinica plant shows higher oxidative stability and lower CO2 emissions compared to fossil diesel, but requires supercritical transesterification. Degumming and esterification of Crambe oil can result in biodiesel with high yield and oxidative stability.
Article
Agriculture, Multidisciplinary
Xin-lei Zhao, Yi-hong Bao, Yang Guo, Jia-yuan Luo, Shi-long Jiang, Xue Yang
Summary: Tannic acid is more effective in reducing the particle size of the emulsion. The addition of phenolic compounds contributes to the stability and rheological parameters of the emulsions. Covalently crosslinking phenolic compounds to proteins is a better method for preparing stable emulsions.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(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.