Article
Chemistry, Physical
Zhong-Sheng Wang, Zhao-Hui Zhou, Lu Han, Xu Chen, Hong-Jia He, Qun Zhang, Zhi-cheng Xu, Qing-tao Gong, Lei Zhang, Gui-Yang Ma, Lu Zhang
Summary: In this study, the interfacial tensions (IFTs) between a series of alkyl ether carboxylates with different ethylene oxide (EO) and propylene oxide (PO) groups and n-alkanes were investigated. The results show that the PO group of the adsorbed surfactant molecules extends towards the oil phase in a helical winding manner, while the EO group arranges in an L pattern at the interface. Surfactant molecules with a large ionic head and PO group exhibit high IFT values, while those with sufficient PO and fewer EO groups have lower IFT values. The addition of NaCl can decrease the size of the ionic head and the C12PO15EO5C solution at optimized salinity can achieve ultralow IFT with hydrocarbons. However, electrolytes have little effect on the IFTs of surfactants with a dumbbell conformation at the interface, as the size of the linear EO group plays a crucial role.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Xiao-Jie Zhang, Zhao-Hui Zhou, Lu Han, Ya-Qin Zhang, Qun Zhang, De-Sheng Ma, Wang-Jing Ma, Lei Zhang, Lu Zhang
Summary: The ultralow interfacial tension (IFT) of extended surfactants appears when the size of the hydrophobic part matches the size of the anionic head, with curled polypropylene oxide (PO) chains occupying larger spaces at the interface. This ultralow IFT is achieved against alkanes when the PO number is 13.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Biophysics
Hashem Ahmadi Tighchi, Mohammad Hasan Kayhani, Ali Faezian, Samira Yeganehzad, Reinhard Miller
Summary: Licorice (Glycyrrhiza glabra) is a useful plant in the Fabaceae family with sweet-tasting roots. The root extract of licorice contains natural surfactants and shows promising potential in reducing surface tension and improving foam properties. This study investigates the surface tension, rheology, foamability, and foam stability of licorice root extract (LRE) and aims to contribute to the development of commercial applications involving foams.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2023)
Article
Medicine, Research & Experimental
Kevin B. Vargo, Patrick Stahl, Brian Hwang, Erica Hwang, Daniel Giordano, Peyton Randolph, Christina Celentano, Robert Hepler, Ketan Amin
Summary: The research aimed to investigate whether the interfacial properties of proteins could predict the surfactant formulation requirements for end-to-end stability of drug products, and to determine the minimum surfactant concentration required to prevent particle formation in different diluents through shaking studies.
MOLECULAR PHARMACEUTICS
(2021)
Article
Energy & Fuels
Xiaoxiao Li, Xiang'an Yue, Zhen Wang, Rongjie Yan, Yabing Guo
Summary: The study revealed that increasing flow rate can facilitate oil film detachment, but the effectiveness is limited by the action area and displacement efficiency. Different surfactants with varying interfacial tensions and emulsification behaviors were found to promote the dislodging of the oil film.
Article
Energy & Fuels
Nurudeen Yekeen, Ahmed Al-Yaseri, Ahmad Kamal Idris, Javed Akbar Khan
Summary: This research investigated the impact of ZrO2 nanoparticles on the static adsorption of Triton X-100 and sodium dodecylbenzenesulfonate onto an adsorbent surface with positive and negative charges. The study found that ZrO2 nanoparticles are more effective at reducing surfactant adsorption compared to SiO2 nanoparticles, especially at higher temperatures. The results suggest that ZrO2 nanoparticles have promise in minimizing surfactant adsorption onto rock surfaces due to electrostatic repulsion and higher competition for surfactant molecules.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Thermodynamics
Dong-Sheng Guo, Xiao-Bin Li, Hong-Na Zhang, Feng-Chen Li, Ping-Jian Ming, Masamichi Oishi, Marie Oshima
Summary: The study investigates the temperature dependence of surface/interfacial properties of liquids, finding a decreasing trend of surface tension and contact angle with temperature increase. Different dynamic behaviors of droplets are observed for ultra-pure water and surfactant solutions in different stages.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Energy & Fuels
Pattamas Rattanaudom, Bor-Jier Ben Shiau, Jeffrey Harry Harwell, Uthaiporn Suriyapraphadilok, Ampira Charoensaeng
Summary: The study successfully prepared silica nanoparticle (SNP) added ultralow interfacial tension foam (SNP-ULIFT foam) using ternary surfactant systems. The foam exhibited remarkable ability to form foam and ultralow interfacial tension, leading to significant improvement in oil recovery performance in core flood experiments.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Physical
Shubham Tiwari, B. Moses Abraham, Jayant K. Singh
Summary: This study investigates the combined effect of surfactants and nanoparticles at the air-water interface, showing that the presence of nanoparticles reduces the efficiency of Triton X-100 and Tween 20 surfactants primarily due to the adsorption of surfactants on the nanoparticles. Density functional theory simulations reveal that the adsorption of non-ionic surfactants on silica nanoparticles decreases as the degree of ionization of the nanoparticles increases, in agreement with experimental observations.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Thermodynamics
LongJin Du, Jianzhong Liu, ZeXu Li, WeiJuan Yang
Summary: This study investigates the effects of surfactant, temperature, particle concentration and particle size on the surface tension of B/JP-10 nanofluid fuels. The results show that the addition of surfactants helps to reduce the surface tension of the nanofluid fuel, while the surface tension is higher than that of pure JP-10 and increases with increasing particle concentration and decreases with increasing particle size. The surface tension of the suspended fuel decreases linearly with increasing temperature in a certain temperature range (10-60 degrees C).
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Chemistry, Physical
K. Bouchoris, V Bontozoglou
Summary: A minimum model for lung surfactant dynamics is proposed, based on Frumkin/Langmuir equilibrium and an equation of state. The model is validated with literature data and the best-fit values of key parameters are found to be physically meaningful. The predicted dilatational elasticity is also considered.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Agnieszka Kujawska, Robert Mulka, Samah Hamze, Gawel Zyla, Bartosz Zajaczkowski, Matthias H. Buschmann, Patrice Estelle
Summary: Thermosyphons are efficient heat transfer devices that can be enhanced by using nanofluids. The impact of nanofluids is most significant in the boiling process in the evaporator section, where nanoparticles tend to deposit on the heater's surface, altering the characteristics of the nanofluid.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Hao Zhang, Shan Qing, Xiaoyan Huang, Xiaohui Zhang, Aimin Zhang
Summary: The interfacial properties of conventional and functional modified nanofluids, including tension and contact angle, were experimentally investigated. The results showed that the surface tension of both types of nanofluids decreased with increasing nanoparticle concentration and temperature. The contact angle was affected by the surface roughness of copper plates as well as the nanoparticle loading. The surface tension and contact angle of conventional nanofluids decreased with increasing surfactant concentration.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Shuai Zhao, Zhao-Hui Zhou, Yang-Nan Shangguan, Lu Han, Li-Li Wang, Wei Fan, Qun Zhang, Lei Zhang, Gui-Yang Ma, Lu Zhang
Summary: This paper investigates the effects of extended surfactant concentration, polypropylene oxide (PO) number, and various counter ions (Na+, Ca2+, and Mg2+) on the oil-water interfacial tension (IFT) of extended surfactant solutions. The results show that as the PO number increases, the space occupied by surfactant molecules on the oil phase side increases, resulting in a tighter surfactant film. Bivalent cations can significantly reduce the IFT, with calcium ions achieving ultralow values at lower PO numbers and a wide range of alkane concentrations. The ability of magnesium ions to reduce the IFT is weaker than that of calcium ions. Additionally, surface-active substances in crude oil competitively adsorb on the interface, leading to an increase in IFT. The addition of calcium or magnesium ions forms a tight adsorption film of surfactant molecules, resulting in an ultralow IFT against crude oil.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Chemical
Mostafa Azadi, Faramarz Hormozi, Maryam Sanaei-Moghadam, Shahin Yegane Sarkandy
Summary: This study investigates the impact of SiO2 nanoparticles and SDS surfactant on wetting properties and granule size distribution in fluidized bed granulation utilizing an enzyme-based liquid binder. Nanofluids were prepared by mixing different concentrations of SiO2 and SDS with alkaline protease enzyme liquor augmented with sodium carboxymethylcellulose as the binder. Surface tension (ST) and contact angle (CA) of nanofluids with powder compact were determined using pendant and sessile drop methods. Additionally, a novel correlation for ST of nanofluids was proposed, and the effect of nanoparticles and surfactant on enzyme activity was evaluated. Results indicate that nanoparticles increase ST and CA of base fluid, whereas SDS has an opposite effect. Granulation results demonstrate that granule size increases with higher adhesion tension of binder, resulting in narrower and more uniform size distribution.
Article
Nanoscience & Nanotechnology
Rasoul Khademolhosseini, Arezou Jafari, Seyyed Mohammad Mousavi, Mehrdad Manteghian, Zahra Fakhroueian
APPLIED NANOSCIENCE
(2020)
Article
Energy & Fuels
Mahmoud Abdi Ghassem Kheili, Negahdar Hosseinpour
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2020)
Article
Chemistry, Physical
Sefatallah Ashoorian, Aliyar Javadi, Negahdar Hosseinpour, Maen Husein
Summary: This study introduces novel experimental protocols to investigate the evolution of adsorbed asphaltene layer to a film of aggregates at a model oil/water interface by means of dynamic interfacial tension (IFT) and dilational surface rheology measurements. It is found that the transformation of an asphaltene adsorbed layer to a rigid film depends not only on asphaltene concentration but also on aging time and interfacial area perturbations. These findings suggest that standard deviation from Young-Laplace shape fitting can be a rigorous parameter to reveal the properties of the interfacial asphaltene film, which cannot be recognized by regular IFT measurements.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Fatemeh Mahmoudi Alemi, Seyed Ali Mousavi Dehghani, Alimorad Rashidi, Negahdar Hosseinpour, Saber Mohammadi
Summary: The study showed that the synthesized MWCNT-Fe2O3 nanocomposite can effectively control the precipitation and aggregation of asphaltene, improving the stability and flow properties of crude oil.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Energy & Fuels
Fatemeh Mahmoudi Alemi, Seyed Ali Mousavi Dehghani, Ali Rashidi, Negahdar Hosseinpour, Saber Mohammadi
Summary: This study synthesized Fe2O3 and functionalized SiO2 nanoparticles to investigate their effects on asphaltene precipitation and aggregation in live oils. The results showed that Fe2O3 nanoparticles better controlled asphaltene precipitation compared to F-SiO2, leading to increased stability and reduced asphaltene structure size. TEM images confirmed these results and indicated an increase in aromatic sheet interlayer spacing.
Article
Chemistry, Physical
Fatemeh Mahmoudi Alemi, Seyed Ali Mousavi Dehghani, Alimorad Rashidi, Negahdar Hosseinpour, Saber Mohammadi
Summary: Synthesized single-walled carbon nanotubes (SWCNTs) effectively delay asphaltene precipitation and reduce the size distribution of asphaltene aggregates. The highest dispersion efficiency value of 93.5% is achieved at a concentration of 100 ppm. The large surface area of SWCNTs and strong pi-pi interactions with asphaltenes contribute to their efficient control of asphaltene precipitation/aggregation.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
Mohammad Hossein Sarikhani, Pouriya Esmaeilzadeh, Mohammad Taghi Sadeghi
Summary: The research demonstrates that nano-fluid coatings based on PVA-functionalized TiO2/Al2O3 nanocomposites exhibit robust underwater superoleophobic properties with stability and high-temperature resistance. These multifunctional coatings offer self-cleaning properties and show good abrasion resistance in sandpaper tests.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Engineering, Environmental
Fatemeh Mahmoudi Alemi, Saber Mohammadi, Seyed Ali Mousavi Dehghani, Alimorad Rashidi, Negahdar Hosseinpour, Abdolvahab Seif
Summary: In this study, a new class of carbon nanoparticles (CNPs) was synthesized to inhibit/disperse asphaltene precipitation and aggregation in unstable crude oil. Experimental and theoretical results demonstrate that CNPs have high specific surface area and strong chemisorption capability, making them an effective asphaltene handling strategy.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Sara Shourni, Aliyar Javadi, Negahdar Hosseinpour, Alireza Bahramian, Mohammad Raoufi
Summary: Protein corona adsorption layers on nanoparticle surfaces can significantly affect the interactions and reactivity of nanoparticles. This study develops a novel experimental protocol based on dynamic interfacial properties to evaluate protein-nanoparticle interactions in situ. The results show good agreement with other experimental techniques and provide a better understanding of protein corona formation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Multidisciplinary
Pouriya Esmaeilzadeh, Ahmad Zandi, Mohammad Hossein Ghazanfari, Ayub Khezrnejad, Mobeen Fatemi, Asghar Molaei Dehkordi
Summary: Researchers have successfully modified zirconia-ceria nanocomposites with low surface energy agents to create nanofluids capable of regulating surface wettability on mineral substrates, achieving superhydrophobic, superoleophobic-superhydrophilic, and superamphiphobic conditions. These treated surfaces exhibit self-cleaning properties and excellent oil repellency, with sliding angles <= 7 for various liquids.
Article
Energy & Fuels
Narges Bahaloo Horeh, Negahdar Hosseinpour, Alireza Bahramian
Summary: This study provides an asphaltene inhibitor (BZSS-012) and emphasizes the mutual dependence of the inhibitor-asphaltene molecular structure/functional groups for successful inhibition. Two dead oil samples were used to extract asphaltenes and prepare model oils, and interfacial rheology measurements and conventional asphaltene dispersant tests were performed to evaluate the inhibitor performance. It was found that the inhibitor achieved an efficiency of 99.2% in the F-model oil, higher than the 66.7% efficiency in the A-model oil. Monitoring the standard deviation of dynamic interfacial tension was considered as an appropriate method to screen asphaltene inhibitors.
Article
Energy & Fuels
Mohsen Bahaloo Horeh, Negahdar Hosseinpour, Aliyar Javadi
Summary: During oil production, asphaltenenanoaggregates self-associateand can precipitate out from the oil phase. Metaloxide nanoparticles coated with carbon-containing chains were synthesized to inhibit the precipitation of asphaltene. The inhibition mechanism and performance of the synthesized inhibitor were evaluated through conventional asphaltene dispersant test (ADT), interfacial tension (IFT) measurements, and interfacial elasticity analysis.
Article
Chemistry, Physical
Sefatallah Ashoorian, Aliyar Javadi, Negahdar Hosseinpour, Nashaat N. Nassar
Summary: The impact of aromaticity variation on the surface behavior of asphaltenes was investigated, revealing that low aromaticity conditions led to increased asphaltene surface activity and changes in dilational rheological parameters. The study also highlighted the importance of dynamic interfacial data over static data, suggesting that only a small portion of asphaltenes are practically surface-active, with their surface activity directly correlated with the aromaticity of the solution.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Nanoscience & Nanotechnology
Tatiana Montoya, Azadeh Amrollahi, Gerardo Vitale, Negahdar Hosseinpour, Nashaat N. Nassar
ACS APPLIED NANO MATERIALS
(2020)
Article
Biotechnology & Applied Microbiology
Amir-Mohammad Yousefi, Ava Safaroghli-Azar, Zahra Fakhroueian, Davood Bashash
ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY
(2020)
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)
