Article
Energy & Fuels
Yan Cao, Jiang Du, Yu Bai, Mahdi Ghadiri, Samira Mohammadinia
Summary: The study proposed an artificial intelligence method based on support vector machine algorithm optimized by Grey wolf optimization algorithm to estimate the surface tension of biodiesels. The developed model showed the best predictive performance compared to existing models, with a determined R-squared value of 0.9905 for support vector machine.
Article
Green & Sustainable Science & Technology
Miquele L. Padula, Arthur S. Romero, Dachamir Hotza, Murilo D. M. Innocentini, Maria E. G. Pinto, Augusto S. Pedrini, Evertan Rebelatto, Luiz Fernando B. Ribeiro, Guilherme Zin, J. Vladimir Oliveira, Marco Di Luccio
Summary: This study investigated the efficiency of microfiltration with a polymeric membrane for the dehydration of fatty acid ester mixtures. The modified membrane showed improved performance with higher fluxes and enhanced dehydration compared to the unmodified control membrane.
Article
Energy & Fuels
Yllana F. Marinho, Ana Patricia S. de Oliveira, Carlos Yure B. Oliveira, Thiago H. Napoleao, Patricia M. Guedes Paiva, Mikele Candida S. de Sant'Anna, Carolina B. Malafaia, Alfredo O. Galvez
Summary: This study investigates the efficiency of Moringa oleifera seeds as a bioflocculant for harvesting Tetradesmus dimorphus biomass. The results show that salt extracts exhibit higher flocculation efficiency than aqueous extracts. Prediction values obtained from data modeling approach real values, allowing for an adequate optimization of flocculant concentration and pH.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Energy & Fuels
M. Matbouei, D. P. Weston, Xingzhong Liang, S. Hainsworth
Summary: Biodiesel is increasingly used in engine applications to reduce harmful emissions, but it is more corrosive to metallic components compared to petroleum diesel. This study found that corrosion rates were significantly faster for copper and brass compared to mild steel and aluminum alloys, with copper causing chain scission and greater biodiesel degradation. Activation energies for corrosion were also calculated for different metals, showing a direct reaction between copper and fatty acids leading to faster corrosion rates.
Review
Energy & Fuels
Carsten Wedler, J. P. Martin Trusler
Summary: Biodiesel fuels are comprised of a mixture of different fatty acid esters, which have significant effects on combustion and storage. This study reviews the available experimental data on density and viscosity of fatty acid methyl, ethyl, and butyl esters and identifies gaps in the literature. The research includes 16 different esters from three ester families and provides an overview of generalized models for describing density and viscosity at elevated pressures.
Article
Green & Sustainable Science & Technology
Mia Gotovusa, Mihovil Medic, Fabio Faraguna, Matea Sibalic, Lucija Konjevic, Jelena Parlov Vukovic, Marko Racar
Summary: This study optimized the conversion of biodiesel by adjusting parameters such as temperature, time, molar ratio, and catalyst mass, and evaluated the properties of fatty acid propyl esters blended with diesel.
Article
Chemistry, Analytical
Carine Tondo Alves, Morenike A. Peters, Jude A. Onwudili
Summary: The study utilized TGA for analyzing the thermal degradation of compounds in biodiesel production, successfully quantifying compounds in three process streams. TGA proved to be a fast and simple method for accurately monitoring triglyceride conversion stages and final product purity.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Physical
H. Ghazipour, A. Gutierrez, D. Mohammad-Aghaie, M. M. Alavianmher, S. M. Hosseini, S. Aparicio
Summary: The study measured the thermophysical properties of mixtures of fatty acid esters with alkanols and analyzed the intermolecular forces in these systems through experimental measurements and molecular modeling. The non-ideality behavior of the studied systems showed significant changes in hydrogen bonding structuring upon mixing, highlighting the importance of the amount of alkanols in tuning and controlling the macroscopic properties of biodiesel blends.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Agricultural Engineering
Rachapudi Sreeharsha, G. Sai Tejaswini, S. Venkata Mohan
Summary: This study focuses on lipid and volatile fatty acid (VFA) production through dual-stage fermentation of spentwash in a biorefinery framework with Trichosporon cutaneum (Tc) and Yarrowia lipolytica (Yl). The results showed that Tc and Yl accumulated dry biomass of 2.9 and 2.5 g/L respectively in acidhydrolysed spentwash (AHSW) and produced total VFA of 16 and 5.5 g/L respectively. The lipid yields and titres were higher in Tc/AHSW compared to Yl, indicating the effectiveness of Tc in spentwash bioremediation. Furthermore, the analysis of fatty acid composition revealed the presence of higher oleic acid, which is ideal for biodiesel production.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Chemical
Arthur Santos Romero, Murilo Daniel de Mello Innocentini, Dachamir Hotza, J. Vladimir Oliveira
Summary: This study proposes the use of membrane separation to polish industrial enzymatic fatty acid methyl esters (FAME). Results show that the 10 kDa ultrafiltration (UF) membrane can effectively remove impurities and improve the color and contamination of FAME samples.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Review
Biotechnology & Applied Microbiology
Ahmad Mustafa, Shah Faisal, Inas A. Ahmed, Mamoona Munir, Eliane Pereira Cipolatti, Evelin Andrade Manoel, Carlo Pastore, Luigi di Bitonto, Dieter Hanelt, Febri Odel Nitbani, Zeinhom M. El-Bahy, Abrar Inayat, Tamer M. M. Abdellatief, Konstantza Tonova, Awais Bokhari, Abdelfatah Abomohra
Summary: With the growth of the chemical industry, the demand for cheaper and more environmentally friendly alternatives to petrochemicals has increased. Oleochemicals and biodiesel are considered as green alternatives to petroleum derivatives. The enzymatic production of these compounds is more environmentally friendly and energy efficient compared to traditional chemical processes. However, the high cost of lipases has limited their large-scale utilization. This review discusses the factors affecting the economic feasibility of enzymatic processes and reports the recent advances in lipase-catalyzed production of these compounds in both lab and large-scale settings.
BIOTECHNOLOGY ADVANCES
(2023)
Article
Green & Sustainable Science & Technology
Mothi Bharath Viswanathan, Ming-Hsun Cheng, Tom Elmo Clemente, Ismail Dweikat, Vijay Singh
Summary: This study investigated the economics of producing biofuels from an industrial hemp genotype, finding that increasing the lipid content in hemp can lead to higher biodiesel production and lower production costs. The simulation results showed that hemp with 10% lipids can achieve a comparable biodiesel unit production cost to soybean biodiesel, with the potential for cost reduction with lower hemp feedstock costs. Additionally, industrial hemp is capable of producing more total biofuels per hectare of agricultural land than soybean.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Balkis Hazmi, Umer Rashid, Sibudjing Kawi, Wan Nur Aini Wan Mokhtar, Thomas Choong Shean Yaw, Bryan R. Moser, Ali Alsalme
Summary: The accumulation of plastic waste poses a serious threat to the environment, and finding solutions is crucial. This study successfully transformed waste polyethylene terephthalate containers into plastic waste char and then converted it into an acidic solid catalyst for biodiesel production. The findings provide a promising solution to the environmental issue of plastic waste.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Engineering, Environmental
Aroosh Shabbir, Hamid Mukhtar, Muhammad Waseem Mumtaz, Umer Rashid, Ghulam Abbas, Bryan R. Moser, Ali Alsalme, Tooba Touqeer, Chawalit Ngamcharussrivichai
Summary: Biodiesel produced from low-cost, inedible tallow using Lewatit-immobilized lipase showed promising fuel properties and reduced exhaust emissions compared to petro-diesel. The two-step chemical-mediated transesterification achieved a higher conversion rate compared to the single-step lipase-mediated method. The research also revealed the potential of waste animal fats for biodiesel production and a new efficient lipase source.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Review
Multidisciplinary Sciences
Ridha Ennetta, Hakan Serhad Soyhan, Cemil Koyunoglu, Veli Gokhan Demir
Summary: With the increasing use of rapidly developing technology in daily life, the need for energy has become essential for human beings. This paper focuses on the application of biodiesel production technologies in the transportation industry, with a special emphasis on the importance of microwave-assisted biodiesel production technology in low-income countries.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Physical
Shahin Khosharay, Nayereh Sadat Mousavi
PHYSICS AND CHEMISTRY OF LIQUIDS
(2018)
Article
Thermodynamics
Nayereh Sadat Mousavi, Shahin Khosharay
FLUID PHASE EQUILIBRIA
(2018)
Article
Green & Sustainable Science & Technology
Hamid Yazdani, Abbas Khoshhal, Nayereh S. Mousavi
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2020)
Article
Energy & Fuels
Ascencion Romero-Martinez, Erika Hernandez-Guerrero, Edgar Ramirez-Jaramillo, Rafael Martinez-Palou
Article
Physics, Multidisciplinary
J. M. Marin-Garcia, A. Romero-Martinez, F. de J. Guevara-Rodriguez
REVISTA MEXICANA DE FISICA
(2020)
Article
Engineering, Chemical
Jose Manuel Marin-Garcia, Ascencion Romero-Martinez, Felipe de Jesus Guevara-Rodriguez
Summary: This article presents a methodology for predicting solid-liquid, solid-vapor, and liquid-vapor phase coexistences using a non-cubic equation of state. The methodology is suitable for substances with a higher density of the solid phase than the liquid phase, and its reliability is validated through calculations.
CHEMICAL ENGINEERING COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Pablo R. Diaz-Herrera, Gabriel Ascanio, Ascencion Romero-Martinez, Agustin M. Alcaraz-Calderon, Abigail Gonzalez-Diaz
Summary: This work aims to compare the theoretical implementation of three strategies for reducing CO2 emissions in existing natural gas combined cycles under the Mexican clean energy regulation. Techno-economic analysis shows that the post-combustion carbon capture plant has better economic performance compared to hydrogen cases. It is found that under the current Mexican regulatory framework, the incorporation of these technologies is not possible, suggesting a need for regulatory amendments to promote market entry of these technologies.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Characterization & Testing
Hamid Yazdani, Nayereh Sadat Mousavi
Summary: The study investigated the effect of different mixing methods on the morphological behavior and mechanical properties of PP/EPDM/talc compound. It was found that the tensile properties were not affected by the mixing methods, while the sample with the highest impact resistance was prepared by pre-blending on two roll mills before final mixing in an internal mixer.
POLYMERS & POLYMER COMPOSITES
(2021)
Article
Engineering, Chemical
Nayereh Sadat Mousavi, Behzad Vaferi, Ascencion Romero-Martinez
Summary: In the first stage, a thermodynamic approach coupled with the UNIFAC model was used to predict the surface tension of various aqueous amine solutions, investigating the influence of temperature, amine concentration, and hydrophobic groups. The second stage involved a multilayer perceptron neural network model to predict surface tension, with comparisons to experimental data showing average absolute relative deviations of 6.79%, 1.17%, and 1.12%, respectively.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Physical
Nayereh Sadat Mousavi, Ascencion Romero-Martinez, Reinhard Miller
Summary: Critical Micelle Concentration (CMC) is a fundamental property of surfactants in solution. The estimation of CMC is important for the behavior and performance of surfactant systems in different industrial applications. A simple model based on the thermodynamics of micellization was developed to predict the CMC of nonionic surfactants. The hydrophobic characteristics play a major role in micelle formation.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Characterization & Testing
Hamid Yazdani, Saeid Samiei, Hossein Akbari Nasab, Delaram Afshar, Nayereh Sadat Mousavi
Summary: In this study, the degradation temperature of polyamide-12 was investigated using thermogravimetric analysis (TGA) test and neural network models. The results show that neural networks can be an efficient and low-cost tool to predict the degradation temperature of polymers.
POLYMERS & POLYMER COMPOSITES
(2022)
Article
Thermodynamics
Haolei Yang, Xiaoqiang Bian, Lianguo Wang
Summary: A new association model, CPA-MHV1, combining the SRK equation of state with the CPA equation based on Michelsen's improved Huron-Vidal mixing rule, is developed. The model is used to investigate the vapor-liquid equilibrium of binary mixtures involving CH4, CO2, and H2O, as well as ternary mixtures containing NaCl. The results show that considering the solvation between CO2 and H2O yields the best performance, while CH4 with a pseudo-association scheme has the highest comprehensive prediction performance.
FLUID PHASE EQUILIBRIA
(2024)
Article
Thermodynamics
Vikas K. Sinha, Atanu K. Metya, Chandan K. Das
Summary: In this study, the solid-liquid coexistence curve for water was developed using coarse-grained mW and machine-learned ML-BOP water models. The ML-BOP model exhibited lower densities, a broader density-temperature hysteresis loop, and higher free energy compared to the mW model. The pressure dependence fusion curve for both models aligned with previous literature. This analysis demonstrates that the free energy method accurately captures the solid-liquid transformation and the thermodynamic melting point of water.
FLUID PHASE EQUILIBRIA
(2024)
Article
Thermodynamics
Curtis Hays Whitson
Summary: This article tells the story of an extraordinary individual who made numerous and valued contributions, portrayed through a few images and short stories.
FLUID PHASE EQUILIBRIA
(2024)
Article
Thermodynamics
Joe Hajjar, Sabine Enders
Summary: A generalized theoretical framework is introduced for multicomponent reactive nonuniform systems, combining the modified and generalized Cahn-Hilliard equation with a chemical kinetics model. The framework allows for the modelling and investigation of the combined reaction and diffusion in reactive liquid-liquid systems. It is found that for reacting mixtures with much smaller reaction rates than diffusion rates, the mixture will remain in phase equilibrium upon reaction and the interfacial chemical reaction will not affect the overall system dynamics, which are only influenced by the kinetics of the bulk phases.
FLUID PHASE EQUILIBRIA
(2024)
Article
Thermodynamics
Keycianne da Cruz Silva, Leticia Daniela de Souza, Vinicius Azevedo Gomes, Leandro Rodrigues de Lemos
Summary: Phase diagrams of four aqueous two-phase systems were determined experimentally, and conclusions were drawn regarding the effect of temperature on system enthalpy change and the influence of macromolecules on phase separation.
FLUID PHASE EQUILIBRIA
(2024)
Article
Thermodynamics
Yuanqing Wu, Shuyu Sun
Summary: The sparse-grid guided PINN training method improves the accuracy of the PINN surrogate model by rearranging collocation points and reduces the training time complexity. Experimental results demonstrate its clear advantages in terms of convergence, stability, and accuracy.
FLUID PHASE EQUILIBRIA
(2024)
Article
Thermodynamics
Peter Englezos
Summary: This article discusses the research progress and challenges in the field of canonical clathrate or gas hydrate phase equilibria, as well as the application of computational methods and models. It also explores the potential of machine learning techniques in hydrate and thermodynamic calculations.
FLUID PHASE EQUILIBRIA
(2024)
Article
Thermodynamics
Ying-Chieh Hung, Shao-Wei Su, Jia-Wei Yan, Gui-Bing Hong
Summary: In this study, VLE data for five binary systems were measured and successfully correlated using models. The predictive models were used to predict the binary VLE phase diagram and explain the mechanism of separation efficiency. The strength of electrostatic interactions and temperature-dependent separation behavior were determined through the analysis of molecular surface charge distribution.
FLUID PHASE EQUILIBRIA
(2024)
Article
Thermodynamics
Matevz Turk, Tomaz Urbic
Summary: By molecular dynamics and Monte Carlo simulations, this study determined the regions and hierarchy of anomalies in a purely repulsive core-softened system. It was found that in two dimensional systems, a size of 100 particles is sufficient for obtaining accurate details.
FLUID PHASE EQUILIBRIA
(2024)
Article
Thermodynamics
Adnan Jaradat, Rakan Al-Salman, Abdalla Obeidat
Summary: The vapor-liquid equilibrium of six primary alcohols were studied using molecular dynamics simulations and compared with experimental results. The study found that neglecting the Lennard-Jones interaction significantly reduced the critical temperature values and determining the critical temperature using surface tension gave more accurate results. The TraPPE-UA potential field showed good accuracy in predicting the critical temperature.
FLUID PHASE EQUILIBRIA
(2024)
Article
Thermodynamics
Michele Valsecchi, Amparo Galindo, George Jackson
Summary: The thermodynamic properties of aqueous mixtures of polyethylene glycol (PEG) are described using the SAFT-gamma Mie group-contribution equation of state. The model successfully predicts the miscibility gaps in a temperature range and shows good agreement with experimental results.
FLUID PHASE EQUILIBRIA
(2024)
Article
Thermodynamics
Roman Tomaschitz
Summary: Analytic closed-form expressions for the liquid and vapor saturation densities defining the coexistence curve are obtained. The coexistence curves of nitrogen, ethene, and sulfur hexafluoride are derived using high-precision data, and the critical power-law scaling of the order parameter and coexistence-curve diameter is examined. The Log-Log slopes of various quantities are used to determine the ideal power-law scaling regime and illustrate the slope evolution in the subcritical regime.
FLUID PHASE EQUILIBRIA
(2024)
Article
Thermodynamics
Nivaar Brijmohan, Kuveneshan Moodley, Caleb Narasigadu
Summary: An artificial neural network-based QSPR model was developed to estimate binary interaction parameters for the temperature-dependant form of the NRTL model. This model serves as a supplement to overcome limitations of group contribution methods in solvent screening and has been proven to be effective in improving the robustness of the screening process.
FLUID PHASE EQUILIBRIA
(2024)
Article
Thermodynamics
Marco Campestrini, Paolo Stringari, Salem Hoceini
Summary: In this paper, the solubility of benzene in different phases of methane was predicted using the GERG-2008 equation of state and the Gibbs free energy equation. The obtained results were in good agreement with experimental data and emphasized the significance of accurately representing the density of the fluid phase for predicting the solubility of solids in fluids.
FLUID PHASE EQUILIBRIA
(2024)
Article
Thermodynamics
Nefeli Novak, Georgios M. Kontogeorgis, Marcelo Castier, Ioannis G. Economou
Summary: This paper discusses theoretical considerations on electrolyte thermodynamic models for single and mixed solvent solutions. The authors find that there is no consensus among researchers on many fundamental issues in this field. They point out the need to convert electrolyte terms to the framework of the physical model and emphasize the importance of the Born term for liquid-liquid equilibrium calculations.
FLUID PHASE EQUILIBRIA
(2024)
