Article
Chemistry, Multidisciplinary
Jarernporn Thawornprasert, Wiriya Duangsuwan, Krit Somnuk
Summary: The optimum conditions for producing refined crude palm oil methyl ester were investigated using the response surface method. Vacuum distillation was conducted to obtain refined crude palm oil with reduced free fatty acids, improving nutritional benefits and reducing chemical consumption. The purity of the methyl ester was studied by adjusting variables such as methanol content, potassium hydroxide concentration, stirrer speed, and reaction time. The results showed that the methyl ester had a purity of 96.91 wt% under the optimal conditions.
Article
Chemistry, Multidisciplinary
Elisabetta Brenna, Valeria De Fabritiis, Fabio Parmeggiani, Francesca Tentori, Davide Tessaro
Summary: This work presents the synthesis of oleoyl ethanolamide, an FDA-approved dietary supplement for weight loss, using lipase-mediated conversion of oleic acid. The process utilizes a packed-bed reactor with commercial lipase Lipozyme 435 in continuous flow mode, which improves reaction yield and catalyst productivity. The nontoxic and renewable solvent limonene is used, and the biocatalyst demonstrates stability and efficiency after more than 157 hours of continuous operation. The target compound is selectively obtained by simple filtration, showing high purity and isolation yield, while the reaction byproducts remain in the solution.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Energy & Fuels
Ke Li, Jie Chen, Xiao-an Nie
Summary: The study shows that glycerol in pre-esterification of waste oil can reduce the acid value to a lower level in one step, and the optimized process conditions obtained through orthogonal experiment can achieve high conversion rate and good environmental protection, making it easier to realize the continuous synthesis of biodiesel from waste oil with high acid.
Article
Engineering, Chemical
Cherng-Yuan Lin, Yi-Wei Lin, Hsuan Yang
Summary: The global trend towards net-zero carbon emissions from burning fuels in combustion engines highlights the alternative role of biodiesel. The manufacturing cost of biodiesel, determined by feedstock cost, hinders its development. Low-cost feedstocks with high acid content and water cannot be used on an industrial scale. However, through a supercritical transesterification reaction system, these feedstocks can be converted into biodiesel, which shows potential as a competitive alternative fuel to fossil diesel.
Article
Green & Sustainable Science & Technology
Kristaps Malins
Summary: The study investigated the performance, selectivity, recovery, and reusability of a commercial Ni66 +/- 5%/SiO2-Al2O3 catalyst in renewable hydrocarbon synthesis. By using a solvent-free one-pot hydrotreatment method, combustible gases and high yield linear saturated hydrocarbons were successfully produced from low cost raw material pretreated soapstock, indicating the potential for green energy production.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Cheng Chen, Daniel Mira, Xi Jiang
Summary: Transport property prediction of fatty acid methyl esters (FAMEs) is studied through equilibrium molecular simulation, including viscosity, diffusivity, density, and molecular structure dynamics. The effects of system size and spatial inhomogeneity on the Stokes-Einstein relation are analyzed.
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
Energy & Fuels
Huseyin Soyler, Mustafa Kemal Balki, Cenk Sayin
Summary: In this study, biodiesel was produced from waste olives with high FFA content. Esterification and ultrasound-assisted transesterification processes were used to achieve high conversion efficiency and minimize the FFA content in the oil, resulting in a 98.7% conversion yield of WOOME within 10 minutes.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Green & Sustainable Science & Technology
Aasma Saeed, Muhammad Asif Hanif, Asma Hanif, Umer Rashid, Javed Iqbal, Muhammad Irfan Majeed, Bryan R. Moser, Ali Alsalme
Summary: The study explores S. elongata as a new algal feedstock for biodiesel production, with the highest biodiesel yield achieved using the alkaline catalyst KOH.
Article
Energy & Fuels
Luiz J. Visioli, Ana L. B. Nunes, Joao H. C. Wancura, Heveline Enzweiler, Liara J. Vernier, Fernanda de Castilhos
Summary: This paper presents data on the production of fatty acid methyl esters (FAME) through batch and continuous heterogeneous catalysis interesterification with methyl acetate, using soybean oil deodorizer distillate (SODD) as feedstock. The study utilized γ-alumina as a reaction catalyst with high catalytic activity, acid character, and specific area. The optimization of parameters in the batch reactor showed reliable and reproducible results, achieving an ester yield of around 80.0 wt% and a triacetin (TA) yield of 5.4 wt% after 2 hours. Kinetics analysis resulted in a FAME yield higher than 90 wt% and a TA yield of 13.90 wt% after 4 hours. These findings suggest that acid heterogeneous interesterification can be an interesting process for biodiesel synthesis from SODD.
Article
Biotechnology & Applied Microbiology
Hideo Maruyama, Keito Fukuchi, Hideshi Seki
Summary: The aim of this study is to develop a simulation model for the fractionation of fatty acid methyl esters (FAME) using urea complexation. The different complexation behaviors of SFAME, MFAME, and PFAME were observed, and a fractionation model was proposed to explain the observed phenomena.
BIOCHEMICAL ENGINEERING JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Muhammad Ateeq, Li Li, Muhammad Abdullah, Arslan Ahmed, Ghulam Abbas Gohar, Muhammad Rafiq, Shoaib Rauf, Asad Ali, Hamza Saleem
Summary: In this study, biodiesel was produced from neem oil using a single-step direct transesterification process. The characteristics of biodiesel made from neem oil were compared to different biodiesel-diesel blends. The study also investigated the corrosion effect of biodiesel on copper and found that the corrosion rate increased with higher concentrations of biodiesel in diesel.
MATERIALS TODAY SUSTAINABILITY
(2022)
Article
Nutrition & Dietetics
Mengyi Liu, Ziliang Ye, Sisi Yang, Yanjun Zhang, Qimeng Wu, Chun Zhou, Panpan He, Yuanyuan Zhang, Fanfan Hou, Xianhui Qin
Summary: This study aimed to explore the relationship between habitual fish oil use and the risk of chronic kidney diseases (CKD). A total of 408,023 participants without prior CKD were enrolled from the UK Biobank. Fish oil use and dietary intakes were assessed through questionnaires. The study found that habitual fish oil use was associated with a lower hazard of CKD, and there were consistent inverse relationships between fish consumption and circulating omega-3 PUFA concentration with incident CKD.
Article
Engineering, Multidisciplinary
Samuel Latebo, Abreham Bekele, Temesgen Abeto, Job Kasule
Summary: This study aims to produce biodiesel from blended acid oil of cottonseed and sunflower soapstock using silica sulfuric acid as a catalyst. The optimized conditions resulted in a high yield of biodiesel, with physicochemical properties meeting international standards.
JOURNAL OF ENGINEERING RESEARCH
(2022)
Article
Agriculture, Dairy & Animal Science
Mahmoud Atef Yousef, Mohammed Hamdy Farouk, Hossam H. Azzaz, Mostafa S. A. Khattab, Ahmed M. Abd El Tawab, Mohamed El-Sherbiny
Summary: This study introduces ultrasonic nanoemulsification of corn oil as a replacement for raw oil supplementation and demonstrates its effectiveness in increasing milk productivity and fat percentage, as well as preserving the proportion of polyunsaturated fatty acids in dairy goats' milk.
Correction
Chemistry, Applied
Jia Liu, Juntong Dong, Xiaodan Li, Teng Xu, Zhenguo Li, Jeffrey Dankwa Ampah, Mubasher Ikram, Shihai Zhang, Chao Jin, Zhenlong Geng, Tianyun Sun, Haifeng Liu
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Seba Alareeqi, Daniel Bahamon, Kyriaki Polychronopoulou, Lourdes F. Vega
Summary: This study explores the potential application of single-atom-alloy (SAA) catalysts in bio-oils hydrodeoxygenation refining using density functional theory (DFT) and microkinetic modeling. It establishes the relationships between stability, adsorptive properties, and activity structures for bio-oil derivatives, providing guidance for the synthesis of cost-effective SAA combinations.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Bin Hu, Wen -Ming Zhang, Xue-Wen Guo, Ji Liu, Xiao Yang, Qiang Lu
Summary: This study explored the pyrolysis behaviors and mechanisms of different monosaccharides, including arabinose, galactose, galacturonic acid, and glucuronic acid. The roles of structural differences in these monosaccharides were analyzed, and it was found that glucuronic acid undergoes a special C-C bond breaking reaction during pyrolysis. The findings provide a deep understanding of the pyrolysis chemistry of hemicellulose and the role of different branches.
FUEL PROCESSING TECHNOLOGY
(2024)
Review
Chemistry, Applied
Youwei Zhi, Donghai Xu, Guanyu Jiang, Wanpeng Yang, Zhilin Chen, Peigao Duan, Jie Zhang
Summary: Hydrothermal carbonization (HTC) is an effective method for the harmless disposal of municipal sludge (MS) and offers potential applications for the obtained products. Optimizing reaction conditions, coupling with other waste materials, and combining different processes can improve the performance of HTC. Furthermore, HTC contributes to energy recovery and enhances the quality of life cycle assessment.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Jia Wang, Jianchun Jiang, Dongxian Li, Xianzhi Meng, Arthur J. Ragauskas
Summary: This study presents a scalable process for converting holocellulose and cellulosic wastes into advanced oxygen-containing biofuels with high furan, cyclic ketone, and ethanol content. By combining hydropyrolysis and vapor-phase hydrodeoxygenation using Pd/Al2O3 as a catalyst, the researchers achieved high yields and conversions. The integrated process holds great promise for biomass waste conversion into advanced biofuels.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Florian Held, Jannis Reusch, Steffen Salenbauch, Christian Hasse
Summary: The accurate prediction and assessment of soot emissions in internal combustion engines are crucial for the development of sustainable powertrains. This study presents a detailed quadrature-based method of moments (QMOM) soot model coupled with a state-of-the-art flow solver for the simulation of gasoline engines. The model accurately describes the entire cause-and-effect chain of soot formation, growth and oxidation. Experimental validation and engine cycle simulations are used to identify the root cause of observed soot formation hotspots.
FUEL PROCESSING TECHNOLOGY
(2024)