Article
Energy & Fuels
J. Buendia-Garcia, M. Lacoue-Negre, J. Gornay, S. Mas-Garcia, R. Bendoula, J. M. Roger
Summary: This study examines the potential of variable selection in improving the performance of data fusion modeling for estimating diesel cetane number. The results show that variable selection significantly improves the estimation of this property and enhances model stability. The Covariance Selection method performs best in the NIR data block, while the sequential backward floating feature selection method performs best in the process variable data block.
Article
Energy & Fuels
Martha A. Arellano-Trevin, Teresa L. Alleman, Rebecca Brim, Anh T. To, Junqing Zhu, Charles S. McEnally, Cameron Hays, Jon Luecke, Lisa D. Pfefferle, Thomas D. Foust, Daniel A. Ruddy
Summary: Methyl-terminated polyoxymethylene ethers (MM-POMEs) are oxygenates with desirable diesel-like fuel properties. However, their low energy density and high water-solubility have limited their adoption. By synthesizing a mixture called B*POME1-6, which maintained the advantageous properties of MM-POMEs and had improved energy density and reduced water solubility, these concerns were addressed. The B*POME1-6 blend with a base diesel fuel showed improved oxidation stability, cetane number, sooting tendency, lubricity, and conductivity, while meeting other requirements. Evaluation of the component molecules of B*POME1-6 suggested that they have a greater tendency to partition into water but with a lower tendency to bioaccumulate compared to a common diesel surrogate.
Article
Energy & Fuels
J. Buendia Garcia, M. Lacoue-Negre, J. Gornay, S. Mas Garcia, R. Bendoula, J. M. Roger
Summary: This paper presents a fast and efficient method for estimating the cetane number of diesel fuel obtained from hydrocracking total effluent using near-infrared (NIR) spectrum. The method utilizes a partial least squares regression (PLSR) model and a calibrated database to achieve accurate estimations. The alternative method not only optimizes diesel fuel characterization but also shows potential for predicting other fuel properties.
Article
Agronomy
Zhonglin Wang, Junxu Chen, Jiawei Zhang, Xianming Tan, Muhammad Ali Raza, Jun Ma, Yan Zhu, Feng Yang, Wenyu Yang
Summary: This study assessed canopy nitrogen and carbon content of maize using hyperspectral remote sensing data and uninformative variable elimination (UVE). The results showed that the normalized difference vegetation index (NDVI) based on red edge and NIR wavebands had the highest correlation coefficients for estimating nitrogen and carbon content. UVE-PLS regression models with retained spectral parameters improved the prediction accuracy compared to PLS regression models.
Article
Spectroscopy
Md Mehedi Hassan, Tianhui Jiao, Waqas Ahmad, Xu Yi, Muhammad Zareef, Shujat Ali, Huanhuan Li, Quansheng Chen
Summary: This study presents a simple and sensitive method for predicting 2,4-D residue levels in green tea extract using surface-enhanced Raman spectroscopy (SERS) coupled with uninformative variable elimination-partial least squares (UVE-PLS). The paper-based SERS sensor showed low detection limit and good reproducibility under optimized conditions, with satisfactory validation results when compared to the HPLC method.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Multidisciplinary
Yan-Ju Wei, Ya-Jie Zhang, Xiao-Dong Zhu, Hao-Ming Gu, Zeng-Qiang Zhu, Sheng-Hua Liu, Xing-Yu Sun, Xue-Li Jiang
Summary: This study investigates the effects of different additives on the physical properties and engine performance of blended fuels. The results show that the choice of additives has a significant impact on the fuel's performance and emissions.
APPLIED SCIENCES-BASEL
(2022)
Article
Energy & Fuels
Julian Tuerck, Anja Singer, Anne Lichtinger, Mohammad Almaddad, Ralf Tuerck, Markus Jakob, Thomas Garbe, Wolfgang Ruck, Juergen Krahl
Summary: This study investigates the physical and chemical behavior of solketal in ternary blends with diesel fuel/biodiesel, finding that solketal has limited impact on fuel aging while blends containing HVO may reduce thermo-chemical stability relative to diesel fuel.
Article
Chemistry, Physical
Michal Obergruber, Vladimir Honig, Jan Jencik, Jiri Hajek, Dominik Schlehofer, Tomas Herink
Summary: This study explored the fuel properties of mixtures of diesel fuel and ethanol or butanol, finding that butanol is more suitable than ethanol for use in diesel engines and can be mixed with diesel up to a ratio of 15%. It was also concluded that by choosing the appropriate base diesel, other properties could meet the standard.
Article
Energy & Fuels
Dario Alviso, Cristhian Zarate, Thomas Duriez
Summary: The study suggests that regression analysis using the fatty acid composition of vegetable oils can accurately predict their physico-chemical properties. The models established using genetic programming show low Mean Absolute Error values for cloud point, pour point, cetane number, and iodine number, demonstrating good agreement with experimental data.
Article
Energy & Fuels
Srinivasa Reddy Pala, Varaha Siva Prasad Vanthala, Jaikumar Sagari
Summary: The objective of this study was to evaluate the performance and emission characteristics of a diesel engine using metallic graphene oxide (GO) and nonmetallic zinc oxide (ZnO) nanoparticles in a Mahua biodiesel blend (B20). The results showed that the dispersion of GO and ZnO nanoparticles in BD20 improved performance parameters and reduced emissions. The addition of TWEEN 80 as a surfactant proved to be the most effective.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Qiang Cheng, Ossi Kaario, Zeeshan Ahmad, Ville Vuorinen, Martti Larmi
Summary: This study examines the impact of pilot fuel properties on TF combustion in CI engines, finding that cetane number and aromatic content play key roles in ignition delay and thermal efficiency. Additionally, pilot fuel properties are crucial for combustion stability and states according to in-cylinder pressure oscillation analysis.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Jhe-Kai Lin, Cheng-Pao Lee, Hong-Ping Lin, Elbert Halim, Wei-Cheng Wang
Summary: This study focused on the conversion of palm oil into hydro-processed renewable diesel (HRD) using a nonsulfide catalyst. The optimal catalyst (8Ni-8Mo/gamma Al2O3) and conditions for HRD production were determined through experiments, and the fuel components and properties of HRD were analyzed to meet diesel specifications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Environmental Sciences
Athar Mahmood, Masood Iqbal Awan, Sana Sadaf, Ahmed Mukhtar, Xiukang Wang, Sajid Fiaz, Sher Aslam Khan, Habib Ali, Faran Muhammad, Zafar Hayat, Farhana Gul, Shah Fahad
Summary: Energy security is a priority for policymakers in supporting various sectors. Utilizing biomass, such as sunflower, for biofuel production can provide a renewable and sustainable energy source. Sulphur fertilization plays a key role in optimizing sunflower seed and oil yields.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
G. Krishna Pulluri, K. Tulasi Balaram Padal, J. Sagari
Summary: This study investigates the effects of adding Al2O3 nanoparticles to biodiesel fuel on the vibration and noise of a direct injection diesel engine. The results show that the addition of Al2O3 nanoparticles can reduce the vibration and noise of the engine. The reduction in vibration and noise is more significant when a dispersant is added.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Chemical
Cherng-Yuan Lin, Xin-En Wu
Summary: This study proposed a reliable and convenient predictive method for determining the cetane number of biodiesel. Key parameters were screened out and a predictive model was established using multiple linear regressions. Experimental data verified the validity of the proposed predictive equation, with key parameters including the number of carbon atoms (NC), allylic position equivalent (APE), and double-bond equivalent (DBE) showing significant influence on the cetane number.
Article
Chemistry, Analytical
Gang Qu, Yuxin Zhao, Qiaoli Zhang, Jina Wu, Xiaosen Li, Yang Yang, Shilei Liu
Summary: In this study, magnetic mesoporous materials combined with real-time in situ mass spectrometry were used for the high-throughput detection of hydrolyzed products of organophosphorus nerve agents. The method showed good linearity, low limits of detection and quantification, and high extraction recoveries. The magnetic preparation method used was quick, cost-effective, rugged, and safe. The results demonstrated the potential of this method for rapid and efficient determination of the target analytes in environmental samples.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Anna Hildebrand, Mariam Merchant, Danny O'Hare
Summary: Substandard and falsified artemisinin derivatives in antimalarials have caused significant deaths and economic losses. This study evaluates the feasibility of voltammetric methods for identifying and quantifying artemether. The findings suggest that electrochemical analysis shows promise as a method for artemether identification and quantification.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Marx Osorio Araujo Pereira, Alvaro Ferreira Junior, Edson Silvio Batista Rodrigues, Helena Mulser, Giovanna Nascimento de Mello e Silva, Wallans Torres Pio dos Santos, Eric de Souza Gil
Summary: Brazilian spotted fever (BSF) is a serious and rapidly evolving disease. A new impedimetric immunosensor was developed for rapid diagnosis by measuring specific antibodies in plasma. The sensor demonstrated selectivity and accuracy, and has potential for important applications in diagnostic testing.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Kathrin Schilling, Ronald A. Glabonjat, Olgica Balac, Marta Galvez-Fernandez, Arce Domingo-Relloso, Vesna Slavkovich, Jeff Goldsmith, Miranda R. Jones, Tiffany R. Sanchez, Ana Navas-Acien
Summary: Analysis of trace elements in urine is an important tool for assessing exposures, diagnosing nutritional status, and guiding public health and healthcare intervention. This study provides a sensitive method for analyzing 18 elements in urine samples, using only 100 μL. The results show good accuracy and sensitivity of the method.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Mengya Li, Shijie Liu, Shiliang Guo, Dong Liang, Miaoyun Li, Yaodi Zhu, Lijun Zhao, Jong-Hoon Lee, Gaiming Zhao, Yangyang Ma, Yanxia Liu
Summary: In this study, a magnetic flow device was developed to purify spores in a culture medium system. The device used magnetic nanoparticles to absorb vegetative cells, separating them from the spores. The achieved purity of the collected spores was over 95%. The study also demonstrated a rapid quantitative detection method using Raman spectroscopy.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Wanqiong Liu, Zixuan Wu, Jianwei Peng, Zebin Xu, Yong Liang
Summary: Metal-organic frameworks (MOFs) are effective carriers for molecular imprinting, but their poor dispersibility in aqueous solution is a significant drawback. In this study, we have applied amphiphilic block copolymers and molecularly imprinted technology on MOFs to improve the hydrophilicity of molecularly imprinted fluorescent materials.
ANALYTICAL METHODS
(2024)