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
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
Energy & Fuels
Shiqi Liu, Xumeng Chen, Yongjun Peng
Summary: This study found that adjusting the contact angle of coal particles, rather than the air-liquid interfacial tension, can effectively deaerate overly stable coal froth. Hydrocarbon surfactants DOSS and SDBS were found to be more effective deaerants, while fluorocarbon surfactant PFOA showed limited effectiveness.
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
Biochemistry & Molecular Biology
Ourania Oikonomidou, Margaritis Kostoglou, Thodoris Karapantsios
Summary: The study explores the interfacial arrangement and viscoelastic properties of mixed surfactants at the air-liquid interface. The results show the displacement of anionic sodium oleate by nonionic surfactants at the interface, which is dependent on the hydrophilic part and hydrophobic chain of the nonionic surfactant.
Article
Chemistry, Physical
Hemant Kumar, Siliveru Upendar, Ethayaraja Mani, Madivala G. Basavaraj
Summary: We propose a method to destabilize Pickering emulsions by transiently perturbing the oil-water interface through the transport of a mutually soluble solute. Visual observation and bright field optical microscopy are used to record the macroscopic and microscopic changes induced in these highly stable emulsions. The method is shown to be effective for different types of solutes and stabilizers, and for both oil-in-water (o/w) and water-in-oil (w/o) emulsions with different non-polar solvents as the oil phase.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Xiaoqiang Wu, Xu Hu, Jifang Xu, Lijuan Su, Jieyu Zhang
Summary: The wetting behavior of molten CaO-Al2O3-MgO-FeO slag on BN substrate was investigated at various temperatures and FeO contents. It was found that the initial contact angle decreases with increasing temperature and FeO content. The surface tension of the slag decreases with increasing FeO content and temperature, and the interfacial tension between the slag and BN substrate shows a similar trend. The interfacial tension is influenced by the modifications in the slag structure caused by FeO addition. The optical basicity is inversely correlated with the interfacial tension, providing a measure of the concentrations of free oxygen ion in the molten slag.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(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
Energy & Fuels
Ana Teresa Finol-Gonzalez, Victor Matias-Perez, Uwe Jenchen, Jose Valente Flores-Cano, Raul Ocampo-Perez, Elias Garcia-Hernandez, Ismael Flores-Vivian, Carlos Gilberto Aguilar-Madera
Summary: Chemical enhanced oil recovery (cEOR) uses surfactants to improve the mobility of petroleum in reservoirs. In this study, experiments were conducted on CTAB, DTAB, and SDS surfactants in brines of NaCl and KCl and mineral oil to investigate their effects on interfacial tension (IFT) and contact angle. The results showed that the electrical affinity of the rock surface, dissolved ions, and surfactant molecules play important roles in altering wettability and IFT. These findings provide insights for enhancing production in Chicontepec and serve as a guide for future cEOR lab simulations.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Haitao Li, Chuanzhi Cui, Xulong Cao, Fuqing Yuan, Zhicheng Xu, Lei Zhang, Lu Zhang
Summary: Interfacial dilational rheology was used to investigate the interfacial rheological properties of a mixed system of sulfobetaine ASB and two anionic surfactants, petroleum sulfonate (PS) and alkyl polyoxyethylene carboxylate (AEC). The introduction of polymer hydrophobically modified polyacrylamide (HMPAM) on the interfacial properties of the mixed system was analyzed. The results showed that the interfacial film formed by ASB alone was higher, while the film formed by PS and AEC molecules alone was relatively lower. Adding PS or AEC molecules to the ASB system resulted in the attachment of their ionic heads to the positive center of the hydrophilic group of ASB molecules, affecting the adsorption at the interface.
Article
Chemistry, Applied
Emrah Kirtil, Tatyana Svitova, Clayton J. Radke, Mecit Halil Oztop, Serpil Sahin
Summary: Quince seed extract shows promising surface activity and thickening properties, with the ability to lower surface tension to a low level and provide strong surface coverage at relatively low concentrations. The study highlights the impact of varying concentrations, pH levels, and ionic strengths on the surface properties of the extract, demonstrating its potential as a natural alternative to synthetic surfactants and stabilizers in various industries.
FOOD HYDROCOLLOIDS
(2022)
Article
Chemistry, Physical
Junqing Meng, Lijuan Wang, Shuo Zhang, Yingpei Lyu, Junkai Xia
Summary: Different surfactants have varying effects on the wettability of coal surfaces. Anionic surfactants are effective in improving the wettability of low metamorphic coal, while nonionic surfactants are more effective on high metamorphic coal. The results provide a theoretical basis for the effective application of different surfactants in coal dust control.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Chemistry, Physical
Xing-Feng Chen, Zhi-Cheng Xu, Qing-Tao Gong, Dong-hai Wu, Lei Zhang, Lu Zhang, Sui Zhao
Summary: The wettability of solid surfaces can be altered by extended surfactants with different EO numbers. Below the CMC, extended surfactants adsorb at the PMMA-liquid interface through polar interactions, increasing the surface tension. Above the CMC, extended surfactants continue to adsorb at the PMMA-liquid interface, leading to a hydrophilic modification of the PMMA surface.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Yue Jiang, Meina Wang, Jinchao Wei, Yaxun Fan, Yilin Wang
Summary: Modulating self-assembled surfactant structures has been proved to be an efficient strategy for controlling the deposition and spread of high-speed impacting water droplets on superhydrophobic surfaces. In this study, surface modification of small spherical micelles enables the complete deposition and spread of water droplets on a superhydrophobic surface.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Biochemistry & Molecular Biology
Qin Jiang, Yuechun Du, Lei Zhang, Wangjing Ma, Feng Yan, Lu Zhang, Sui Zhao
Summary: The adsorption behaviors of different extended anionic surfactants on the PMMA surface were studied, showing that the special properties of PO groups can enhance polar interactions and allow gradual adsorption on the PMMA surface. Before the critical micelle concentration, the adsorption amounts of the surfactants at the PMMA-liquid interface were approximately one third of those at the air-liquid interface.
Article
Chemistry, Physical
Tandrima Banerjee, Abhijit Samanta, Ajay Mandal
Summary: The rheological behaviors of polymer-surfactant binary mixtures, specifically partially hydrolyzed polyacrylamide (PHPAM) polymer and sodium dodecyl sulfate (SDS) surfactant solutions, were investigated in this study. The addition of salt and alkali was found to have significant effects on the viscosity of these solutions. The findings provide important insights into the understanding of the rheological behaviors of polymer-surfactant mixtures.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Prathibha Pillai, Ajay Mandal
Summary: The research investigates the potential application of surface active ionic liquids in enhanced oil recovery, showing their good surface activity and high efficiency on the interface under reservoir conditions. Through laboratory assessment, the synthesized SAILs have shown promise for use in EOR.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Energy & Fuels
Mohammad Yunus Khan, Ajay Mandal
Summary: The water-alternating-gas (WAG) operating scheme and reservoir permeability heterogeneity are crucial parameters affecting the WAG displacement process. The analytical model developed in this study considers WAG ratio, viscous gravity ratio, and mobility ratio for stratified heterogeneous reservoirs. The study shows that decreasing WAG ratio accelerates incremental oil recovery, especially at high viscous gravity conditions.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Rakesh Kumar Pandey, Anil Kumar Dahiya, Ankesh Kumar Pandey, Ajay Mandal
Summary: An optimized deep learning model has been proposed for automatic interpretation of pressure drawdown tests, achieving high accuracy in predicting parameters from pressure data with minimized manual intervention.
PETROLEUM SCIENCE AND TECHNOLOGY
(2022)
Review
Energy & Fuels
Nilanjan Pal, Xuan Zhang, Muhammad Ali, Ajay Mandal, Hussein Hoteit
Summary: This article reviews the technical advances, challenges, and applicability of CO2 thickeners, particularly for hydrocarbon recovery. Different types of thickeners, including binary co-polymers and small molecule compounds, have been investigated and show promise for CO2 thickening.
Review
Energy & Fuels
Prathibha Pillai, Moumita Maiti, Ajay Mandal
Summary: Ionic liquids are a promising new material for various industrial applications due to their unique structures and properties. This paper reviews the previous research on the application of ionic liquids in the petroleum industry and related processes, including enhanced oil recovery, drilling fluids, gas hydrate, CO2 capture, and flow assurance. The in-depth discussion aims to aid professionals and researchers in understanding the current situation and planning for the future.
Article
Energy & Fuels
Moumita Maiti, Prathibha Pillai, Aniruddha Sharma, Ajoy Kumar Bhaumik, Ajay Mandal
Summary: In this study, the effect of two ionic liquids on the formation and dissociation of hydrates was investigated. The results showed that these ionic liquids were effective in inhibiting hydrate formation both thermodynamically and kinetically. The induction time and formation rate of hydrates were significantly increased in the presence of these ionic liquids compared to pure water. Additionally, the performance of the ionic liquids in hydrate inhibition increased with increasing alkyl chain length.
Article
Chemistry, Physical
Rohit Kumar Saw, Anshuman Singh, Neetish Kumar Maurya, Ajay Mandal
Summary: Low salinity water flooding is cost-effective and environmentally friendly, and the addition of nanoparticles and polymers can significantly increase oil recovery. The viscosity of complex chemical slugs can be increased by adding nanoparticles to polymer solutions. Low salinity water requires a lower concentration of polymer to reach the target viscosity compared to high saline formation water. The addition of nanoparticles reduces interfacial tension and contact angle, leading to higher oil recovery in low salinity water. Injection of low salinity water-based complex fluid results in incremental recovery of OOIP compared to low salinity water and conventional formation water flooding.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Multidisciplinary
Rohit Kumar Saw, Deep Sinojiya, Prathibha Pillai, Shubham Prakash, Ajay Mandal
Summary: This study aims to investigate the synergistic effects of two nonionic surfactants (Tergitol 15-S-12 and PEG 600) on surface properties, including surface tension, interfacial tension (IFT), and wettability alteration, in chemically enhanced oil recovery (EOR). The optimum composition of the surfactant mixture, determined through surface tension measurement, showed a minimum surface tension value of 30.3 mN/m at a concentration of 225 ppm of Tergitol 15-S-12 and 1 wt % of PEG 600. The surfactant mixture exhibited an ultra-low IFT of 0.672 mN/m at optimum salinity. The wettability alteration study revealed a shift in rock wettability from oil-wet to water-wet region through contact angle observations and X-ray diffraction analysis.
Article
Energy & Fuels
Rohit Kumar Saw, Ajay Mandal
Summary: The low salinity water flooding (LSWF) technique is cost-effective and environmentally friendly, but its mechanisms are not yet clear. Recovery in LSWF depends on fluid/fluid and rock/fluid interactions. This study investigated both interactions and found different optimal conditions for improved oil recovery. Rock/fluid interaction showed an incremental recovery of 14%, while fluid/fluid interaction showed an incremental recovery of 7% over simple seawater injection. Results highlight the importance of considering both interactions and wettability alteration in LSWF design.
Article
Chemistry, Physical
Dinesh Joshi, Neetish Kumar Maurya, Ajay Mandal
Summary: The application of graphene oxide nanosheets (GONs) in enhanced oil recovery has been shown to have unique characteristics, including reduction of interfacial tension and alteration of wetting properties. Experimental results demonstrate that GONs can alter the wettability of rock surfaces, leading to increased oil recovery.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Review
Chemistry, Multidisciplinary
Merajul Islam, Sanjive Kumar, Neha Saxena, Amina Nafees
Summary: Photocatalytic degradation is an environmentally friendly and cost-effective method for treating dye-contaminated water. This review article provides an overview of the latest developments in photocatalysis processes for dye degradation in industrial effluents. The authors classify photocatalyst materials into three generations and analyze various phenomena to achieve efficient degradation. The article also discusses photocatalytic fuel cell technology and the assessment of photocatalyst efficacy, aiming to address challenges and uncertainties in implementing this technology.
Article
Energy & Fuels
Moumita Maiti, Ajoy Kumar Bhaumik, Ajay Mandal
Summary: Hydrate inhibitors are crucial for preventing hydrate growth and ensuring smooth drilling operations. Water-soluble polymers, such as polyvinyl pyrrolidone (PVP K-90), have been found effective in reducing hydrate formation rates. This study investigates the influence of PVP K-90 concentration on hydrate inhibition in predesigned drilling fluids containing methane, ethane, and propane.
GAS SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Physical
Rohit Kumar Saw, Pranali M. Rane, Dinesh Joshi, Shubham Prakash, Lavisha Jangid, Ajay Mandal
Summary: In recent years, there has been increasing interest in the application of natural surfactants in enhanced oil recovery (EOR) due to environmental concerns. This study introduces a novel non-ionic surfactant synthesized from olive oil and evaluates its properties. The synthesized surfactant showed effective emulsification, wettability modification, and efficient oil displacement. Additionally, the surfactant had a low critical micelle concentration, indicating its ability to reduce interfacial tension.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Energy & Fuels
Moumita Maiti, Prathibha Pillai, Aniruddha Sharma, Ajoy Kumar Bhaumik, Ajay Mandal
Summary: This study investigates the effect of two ionic liquids on the formation and dissociation of gas hydrates and finds that they are effective inhibitors. The inhibition performance of the ionic liquids increases with increasing alkyl chain length.
