Article
Chemistry, Physical
Jianbin Liu, Shun Liu, Liguo Zhong, Pan Wang, Pengchao Gao, Qihua Guo
Summary: An anionic/cationic surfactants system with excellent emulsification ability, ultra-small droplet size, and reduced oil-water interfacial tension was developed. The droplet size of the formed O/W emulsion can be as low as 0.6 μm, and the stability is greatly improved. The system can enhance heavy oil recovery by 22.05%.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Gang Wang, Lingfeng Liu, Dandan He, Renling Lu, Ying Xie, Lu Lai
Summary: The surface and interfacial properties of bisquaternary ammonium salts (16-4-16), sodium dodecyl benzene sulfonate (SDBS), and their mixture were investigated. The SDBS/16-4-16 mixture exhibits strong synergistic effect and excellent performance in enhanced oil recovery.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Wannian Zhang, Kai Wang, Caiping Wang, Shanlin Zhao, Zhiqiang Zhang, Fang Yu, Yu-Peng He
Summary: This paper investigates four virtual descriptors of two anionic surfactants through simulation and analysis, and determines the relationships between these descriptors and the interfacial properties of the surfactants. The descriptors accurately evaluate the performance of the surfactants and reveal the patterns for different surfactants and ion concentration gradients.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Di Shi, Zilong Liu, Fan Shao, Xue Li, Xiaoliang Sun, Xiaonan Hou, Yufei Xiao, Yanxiao Hei, Enze Xie, Wenxiu Leng
Summary: This study investigated the self-assembly behavior of anionic surfactants and their influence on the interfacial properties of oil-water using dissipative particle dynamics simulations. The results showed that the morphology of surfactant aggregates changed with concentration and affected the oil-water interface.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Lin Li, Xiao Jin, Jia Chen, Zizhao Wang, Yining Wu, Mingwei Zhao, Caili Dai
Summary: Controlling the wettability of the oil-solid interface is an important breakthrough for removing residual oil film. This study developed a novel surfactant, SDDS, which greatly enhanced the surface wettability modification capability and achieved efficient peeling of the oil film. The results demonstrated the potential of SDDS in the efficient development of residual oil.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
Xiongyu Chen, Mauricio Sotomayor, Hassan J. Alshaer, Haofeng Song, Krishna Panthi, Matthew Balhoff, Kishore K. Mohanty
Summary: This study discovers a surfactant blend that is stable in high salinity/hardness and high temperature conditions, which can be used for enhanced oil recovery. The blend exhibits low adsorption on carbonate and shows a negative correlation between oil saturation and porosity. These findings provide important insights for modeling EOR in rocks with mixed wettability and porosity heterogeneity.
Article
Chemistry, Physical
Sumadi Paryoto, Yoga Romdoni, Ivan Kurnia, Merry Marteighianti, Oki Muraza, Munawar Khalil
Summary: This study investigates the effects of individual and combined systems on the interfacial tension and wettability alteration characteristics of a combination mixture of colloidal Fe3O4 nanoparticles and amphoteric-anionic surfactant. The results show that combining the two surfactants reduces the interfacial tension and adding Fe3O4 nanoparticles at lower concentrations increases the interfacial tension. Furthermore, the combination also changes the wettability from hydrophilic to strongly hydrophilic conditions. The study also finds that adding 0.01 wt% Fe3O4 colloidal nanoparticles in the surfactant mixture provides an optimal recovery efficiency.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Energy & Fuels
Iman Nowrouzi, Amir H. Mohammadi, Abbas Khaksar Manshad
Summary: A novel Rapeseed oil-derived surfactant was synthesized and its effectiveness in enhanced oil recovery was demonstrated through a series of experiments, including reducing interfacial tension, improving reservoir rock wettability, and increasing oil production in the reservoir.
Article
Chemistry, Physical
Lin Li, Jia Chen, Xiao Jin, Zizhao Wang, Yining Wu, Caili Dai
Summary: Surfactant flooding is an effective method for enhanced oil recovery, and developing novel surfactants with excellent water-solid interfacial wettability control capability can significantly improve oil recovery efficiency. The novel polyhydroxy anionic surfactants synthesized in this study showed superior performance in recovering residual oil adhered to oil-wet rocks, leading to an increase in oil recovery by 10.15%.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Energy & Fuels
Himanshu Kesarwani, Amit Saxena, Ajay Mandal, Shivanjali Sharma
Summary: The present study investigated the effects of a binary surfactant mixture on various aspects of surfactant polymer flooding, including the critical micelle concentration, adsorption behavior, interfacial properties, and wetting characteristics. By comparing initial and final concentrations of the surfactant mixture, it was found that the binary surfactant mixture outperforms individual surfactants and efficiently reduces surfactant adsorption by 63%. Additionally, the binary surfactant mixture achieved an ultralow interfacial tension value of 0.0097 mN/m and was able to recover up to 76% of the total oil in sand pack flooding experiments.
Article
Energy & Fuels
Daoyi Zhu, Junhui Qin, Yanyan Gao, Si Guo, Ling Bai, Yuheng Zhao, Qi Zhao, Hongjun Zhang
Summary: Black nanosheets and low-salinity water are effective methods for improving oil recovery in low-permeability reservoirs. Combining these methods could achieve dual effects in oil recovery. However, there has been limited research on the combination effect in conglomerate reservoirs. This study investigates the oil imbibition mechanism of the BN-LSW composite system and finds that it has a minimal impact on interfacial tension but demonstrates a significant emulsification effect and alters the wettability of the core, resulting in an improved imbibition effect.
Review
Energy & Fuels
Wan-Li Kang, Bo-Bo Zhou, Miras Issakhov, Marabek Gabdullin
Summary: Low permeability oil and gas resources have great potential worldwide and have become the main focus of oil and gas development. Enhanced oil recovery (EOR) technologies have been developed to further improve crude oil production in low permeability reservoirs. This study provides a comprehensive review of EOR technologies and discusses the technical challenges, directions, and outlooks of EOR in low permeability reservoirs.
Article
Energy & Fuels
Himanshu Kesarwani, Amit Saxena, Neha Saxena, Shivanjali Sharma
Summary: A novel biodegradable surfactant was developed from Karanj oil, which showed promising potential in enhancing oil recovery efficiency through thermal stability and reducing interfacial tension. The surfactant effectively altered the wetting behavior of the sand surface and exhibited lower adsorption compared to conventional anionic surfactants. Sand pack flooding tests indicated that using the ASP slug designed with Karanj oil surfactant led to the additional recovery of approximately 32% of crude oil after water flooding.
Review
Energy & Fuels
Afeez Gbadamosi, Shirish Patil, Dhafer Al Shehri, Muhammad Shahzad Kamal, S. M. Shakil Hussain, Emad W. Al-Shalabi, Anas Mohammed Hassan
Summary: This article reviews the combination of low salinity waterflooding (LSWF) and chemical enhanced oil recovery (EOR) for improving oil production in reservoirs. Experimental and modeling results show that the combination of LSWF and chemical EOR is more efficient than individual EOR methods.
Article
Energy & Fuels
Alba Somoza, M. Flor Garcia-Mayoral, Ana Soto
Summary: Due to the heavy reliance on crude oil, it is crucial to develop enhanced oil recovery techniques for better reservoir production and lifespan. Carbonate reservoirs make up more than half of the global oil reserves, but their recovery is challenging due to complex pore structure, oil-wet or mixed-wet rocks, and harsh temperature and salinity conditions. This work presents a significant contribution in exploiting these reservoirs through the design of a new formulation with low interfacial tension and reduced adsorption on carbonate rocks, resulting in promising oil recovery.
Article
Engineering, Chemical
Shirin Alexander, Andrew R. Barron, Nikolai Denkov, Paul Grassia, Sajad Kiani, Masanobu Sagisaka, Mohammad Javad Shojaei, Nima Shokri
Summary: This study investigated the impact of surfactant molecular structure on foam stability in various applications. It was found that the electrostatic repulsion between the foam film surfaces of anionic surfactants strongly influenced the process of foam generation and stability, with partially fluorinated surfactants showing better stability in the presence of oil. Additionally, asphaltene-oil mixtures were found to have a detrimental effect on foam stability, except for certain surfactants.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Wafaa Al-Shatty, Mario Campana, Shirin Alexander, Andrew R. Barron
Summary: The mechanism of nanoparticle/surfactant complex adsorption at the critical oil/water interface was evaluated using neutron reflectometry. The study found that the adsorption of nanoparticles at the oil/water interface is influenced by the type of surfactant used, suggesting potential applications in oil recovery.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Ji Wang, Xinjie Luo, Sarah Rogers, Peixun Li, Yujun Feng
Summary: Understanding the evolution process of CO2 aqueous foams in high-temperature, high-pressure environments is crucial for their rational use. In this study, a combination of visualization foam meter, small-angle neutron scattering (SANS), and rheometry was used to gain a comprehensive understanding of the evolution process. The results showed that the volume and lifetime of the foams decreased with increasing temperature and decreasing pressure, attributed to the changes in the viscosity of the continuous phase and the coarsening rate of the bubbles.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Xuzhi Hu, Haoning Gong, Huayang Liu, Xi Wang, Weimiao Wang, Mingrui Liao, Zongyi Li, Kun Ma, Peixun Li, Sarah Rogers, Ralf Schweins, Xuqing Liu, Faheem Padia, Gordon Bell, Jian R. Lu
Summary: The study investigates the interaction between mixed nonionic surfactants and pesticides/wax films. Lower HLB nonionic surfactants form larger nanoaggregates, enhancing wettability and solubilization of pesticides across the wax film, while higher HLB surfactants balance delivery efficiency and phytotoxicity risks for fungicides. The findings provide insights for the design of surfactants in agrochemical formulations.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Tretya Ardyani, Azmi Mohamed, Suriani Abu Bakar, Masanobu Sagisaka, Mohamad Hafiz Mamat, Mohd Khairul Ahmad, Sofian Ibrahim, H. P. S. Abdul Khalil, Stephen M. King, Sarah E. Rogers, Julian Eastoe
Summary: Increasing the number of aromatic groups in surfactants can enhance their affinity for graphene surfaces, leading to improved packing and filling capabilities. The identity, chemical composition, and architecture of surfactant chains play a significant role in determining their compatibility with graphene.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Kuangdai Leng, Stephen King, Tim Snow, Sarah Rogers, Anders Markvardsen, Satheesh Maheswaran, Jeyan Thiyagalingam
Summary: A general method to invert parameter distributions of a polydisperse system using data acquired from a small-angle scattering experiment is presented. The forward problem is generalized as a multi-linear map characterized by a high-dimensional Green tensor, while the inverse problem is formulated as a constrained nonlinear programming problem. The method is shown to be accurate and efficient through numerical examples and offers several enhancements to improve its performance.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2022)
Article
Chemistry, Multidisciplinary
Telma Costa, Matti Knaapila, Beverly Stewart, M. Luisa Ramos, Licinia. L. G. Justino, Artur J. M. Valente, Robert Dalgliesh, Sarah E. Rogers, Mario Kraft, Sybille Allard, Ullrich Scherf, Hugh D. Burrows
Summary: This study reports the synthesis of a new conjugated polymer containing crown ether moieties and investigates the effect of surfactants on polymer-polymer aggregates. The presence of sodium dodecyl sulfate (SDS) disrupts the aggregates and enhances the photoluminescence quantum yields.
Article
Chemistry, Multidisciplinary
Zongyi Li, Jessica Carter, Luis Santos, Carl Webster, Christopher F. van der Walle, Peixun Li, Sarah E. Rogers, Jian Ren Lu
Summary: This study used small-angle neutron scattering to investigate the acidification-induced structure evolution of lipid nanoparticles (LNPs) encapsulating plasmid DNA. The results revealed molecular and nanoscale changes during the acidification process, including protonation of the ionizable lipid, volume expansion, and redistribution of aqueous and lipid components. The similarity analysis showed a strong positive correlation between structure evolution and intracellular luciferase expression, which was further enhanced by the fraction of unsaturated helper lipid. These findings provide insights into the formulation-nanostructure-function relationship of LNPs and aid in the rational design of gene delivery vehicles.
Article
Chemistry, Multidisciplinary
Peng Zhou, Xuzhi Hu, Jie Li, Yan Wang, Henghao Yu, Zhaoyu Chen, Dong Wang, Yurong Zhao, Stephen M. King, Sarah E. Rogers, Jiqian Wang, Jian Ren Lu, Hai Xu
Summary: This work reports the design of a new peptide self-assembly strategy based on unusual alpha-sheet secondary structures. Microscopic imaging, neutron scattering, and spectroscopic measurements indicate the formation of highly ordered wide nanotubes and helical ribbons by two heterochiral peptides. Molecular dynamics simulations reveal the folding of these heteropeptides into alpha-sheets, supporting the proposed secondary structures.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Henry Apsey, Donald Hill, Andrew R. Barron, Shirin Alexander
Summary: In this study, we investigated the wettability and antifouling behavior of different siloxane coatings on plastic and glass substrates. The coatings were prepared using various trimethoxysilane precursors with different alkyl chain lengths. We found that the coatings with longer alkyl chains exhibited comparable water sliding angles to superhydrophobic surfaces. These environmentally friendly coatings showed promise as alternatives to fluorinated films and demonstrated high durability and low adhesion towards synthetic feces.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Rafiq Mulla, Sajad Kiani, Alvin Orbaek White, Charles W. Dunnill, Andrew R. Barron
Summary: In this study, Bi-sprayed Bi2S3 particles were prepared using a facile method, altering their thermoelectric properties. The incorporation of different Bi concentrations into Bi2S3 significantly improved the electrical conductivity and overall thermoelectric performance of the composites.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Varun Shenoy Gangoli, Chris J. Barnett, James D. McGettrick, Alvin Orbaek White, Andrew R. Barron
Summary: This study investigates the effect of annealing, both electrical and by applied voltage, on the electrical conductivity of carbon nanotube (CNT) fibers. The results show that there is a sweet spot in the annealing process, which was determined through a combination of measurements such as two-point probe, nanoprobe, resonant Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). The study also provided insights into the surface effects that need to be overcome to achieve better conductor samples made from CNT fibers.
C-JOURNAL OF CARBON RESEARCH
(2022)
