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
Chemistry, Applied
S. Manali Dhawan, Scott Calabrese Barton, D. Ganapati Yadav
Summary: In this study, interesterification of soybean oil with methyl acetate was carried out using calcined hydrotalcite as a heterogeneous base catalyst to co-produce biodiesel and triacetin. The optimal reaction conditions were found to be an oil to methyl acetate mole ratio of 1:50, a temperature of 200°C, and a catalyst loading of 0.04 g/cm3.
Article
Biochemistry & Molecular Biology
Zhikun Wang, Yuanzhuo Wang, Ping Shang, Chao Yang, Mingming Yang, Jinxiu Huang, Baizheng Ren, Zhaohui Zuo, Qingyan Zhang, Wenbin Li, Bo Song
Summary: In this study, GmWRI1a was successfully overexpressed and contributed to a stable increase in seed oil content in soybean. The transgenic plants exhibited significant upregulation of GmWRI1a and bar genes at different developmental stages. Transcriptome sequencing analysis revealed distinct differences in gene expression between the transgenic lines and the wild type. The field trial demonstrated that the transgenic lines had a consistent increase in seed oil content without affecting protein content and yield. Overexpression of GmWRI1a altered the fatty acid composition by increasing linoleic acid content and decreasing palmitic acid content in seeds.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Engineering, Environmental
Chao Chen, Shaokang Qu, Mengli Guo, Jie Lu, Weiming Yi, Ransheng Liu, Jincheng Ding
Summary: This work focuses on the development of a reusable heterogeneous catalyst for the preparation of biodiesel. The synthesized mixed metal oxide catalyst shows high stability and achieves a FAEE yield of 92.6% under optimized conditions.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
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
Agricultural Engineering
Jie Li, Benzhi Ju, Shufen Zhang
Summary: This study reports a catalyst-free, fully bio-based epoxy vitrimer that rearranges its topology through dynamic transesterification (DTE). These vitrimers exhibit excellent mechanical properties, can be welded and crack-healed at high temperatures, and show varying degrees of recovery in tensile strength after mechanical recycling.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Energy & Fuels
Mariana Albarello, Ana Luiza Barrachini Nunes, Liara Jalime Vernier, Fernanda de Castilhos
Summary: The present study aimed at investigating the interesterification reaction for the production of FAME from DSO in pressurized MeA catalyzed by NbOPO4. Important factors such as temperature, catalyst content, and DSO:MeA molar ratio were studied and optimized. An FAME yield of 87.48% was obtained by using 345°C, 8 wt% catalyst, and an MR of 1:35 in 60 min of reaction. The catalyst showed activity and a decrease in activity was observed in the reuse test.
BIOENERGY RESEARCH
(2023)
Article
Acoustics
Pamella A. Oliveira, Raphaela M. Baesso, Gabriel C. Morais, Andre Alvarenga, Rodrigo P. B. Costa-Felix
Summary: This study investigated the use of high frequency, low power ultrasound in biodiesel production, eliminating the need for external heating sources and mechanical stirring. Results showed that increasing ultrasound power and frequency can enhance biodiesel conversion rates. Moreover, ultrasound was found to have lower energy consumption compared to conventional methods, indicating its potential as a promising technology for biodiesel production.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Engineering, Chemical
R. G. A. Politiek, M. E. Bruins, J. K. Keppler, M. A. Schutyser
Summary: This study investigated the effect of oil content on milling yield, particle size, energy use, and flour dispersibility of soybean. The results showed that increasing oil content limited milling to smaller particles and reduced the overall milling yield. Particle size reduction could be described using an adapted Bond's model with oil content as an input parameter. The produced soy flours exhibited good dispersibility.
JOURNAL OF FOOD ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Natkanin Supamathanon, Kornkanok Boonserm, Nattawut Osakoo, Jatuporn Wittayakun, Sanchai Prayoonpokarach, Narong Chanlek, Winya Dungkaew
Summary: Heterogeneous base catalysts were developed using zeolite-geopolymer hybrid material (Zeo-Geo) as a support for potassium in soybean oil transesterification. Zeo-Geo was prepared by mixing Al metal, meta-kaolin, and fumed silica in NaOH solution and curing at specific temperatures. The resulting 15K/Zeo-Geo catalyst exhibited high activity and biodiesel yield in the transesterification reaction.
Article
Plant Sciences
Hui Jin, Xue Yang, Haibin Zhao, Xizhang Song, Yordan Dimitrov Tsvetkov, YuE Wu, Qiang Gao, Rui Zhang, Jumei Zhang
Summary: By resequencing, a total of 23 and 29 loci related to soybean seed protein and oil content were identified, explaining 3.4%-15.4% and 5.1%-16.3% of the phenotypic variations, respectively. In addition, nine candidate genes involved in protein and oil biosynthesis/metabolism were discovered. These findings can contribute to improving soybean protein and oil content.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Shaige Xia, Jian Li, Guanyi Chen, Junyu Tao, Wanqing Li, Guangbin Zhu
Summary: In this study, acid-base bi-functional Co doped Fe2O3-CaO nanocatalysts were prepared and optimized for biodiesel production, showing enhanced catalytic activity and FFA resistance. The biodiesel yield from soybean oil and WFO was significantly improved, along with better stability and reusability of the catalyst.
Article
Engineering, Environmental
Ricardo Rodriguez-Ramirez, Fabiola S. Sosa-Rodriguez, Jorge Vazquez-Arenas
Summary: Zinc Oxide-co-Sodium Zirconate (ZnO.Na2ZrO3) composite catalyst is synthesized for the fast transesterification of triglycerides in soybean oil, showing competitive performance compared to caustic soda. The synthesized catalyst exhibits enhanced properties and can achieve 97% biodiesel conversion under optimal conditions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Energy & Fuels
Nagaraju Pasupulety, Abdurahim A. Al-zahrani, Muhammad A. Daous, Hafedh Driss, Hesham Alhumade
Summary: Mesoporous tantalum-zirconium oxide (TZ) solid acid catalysts were synthesized and employed for biodiesel production from higher water and palmitic acid added oil feedstocks. The results showed that the yield of methyl palmitate and soybean oil fatty acid methyl ester (FAME) was significantly improved with the addition of tantalum to ZrO2. The high ester yield on TZ catalysts was attributed to the improved acidity and interaction between the catalyst and methanol and triglycerides.
Article
Chemistry, Multidisciplinary
Raquel K. P. Cardoso, Gabriel V. A. Silva, Bruno T. S. Alves, Vitoria A. Freire, Jose J. N. Alves, Bianca V. S. Barbosa
Summary: In this study, Mo-KIT-6 catalyst precursors were directly hydrothermally synthesized with different Si/Mo molar ratios (10, 20, 30) for the production of biodiesel from soybean oil transesterification with methanol. The results showed that the Si/Mo ratio was the most significant variable affecting the biodiesel yield. Under the optimal conditions of using the 10_Mo-KIT-6 catalyst and an alcohol/oil ratio of 20/1, the highest biodiesel yield was achieved. However, using the 20_Mo-KIT-6 catalyst with an alcohol/oil ratio of 15/1 resulted in a biodiesel yield close to the maximum, and it required less methanol consumption, leading to lower energy consumption for the separation of unreacted alcohol.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
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)
