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
Limin Xu, Ming Han, Dongqing Cao, Jinxun Wang
Summary: This study explores the impact of dynamic IFT on emulsification capacity and oil production improvement, finding that quick initial IFT reduction is crucial for oil mobilization. Comparing surfactants with different initial values, it is shown that systems with lower initial IFT achieve significantly higher incremental oil production.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Deneb Zamora Garcia Rojas, Nohra Violeta Gallardo Rivas, Jose Luis Mendoza de la Cruz, Beatriz Adriana Salazar Cruz, Ulises Paramo Garcia
Summary: The most efficient emulsion for heavy crude oil emulsification was the W/O/SAE10, showing Newtonian behavior with a viscosity of 150 cP, low interfacial tension, and excellent droplet size distribution.
Article
Engineering, Chemical
Julieta C. Villalobos-Espinosa, Evangelina Garcia-Armenta, Liliana Alamilla-Beltran, Maria Ximena Quintanilla-Carvajal, Ebner Azuara-Nieto, Humberto Hernandez-Sanchez, Maria de Jesus Perea-Flores, Gustavo F. Gutierrez-Lopez
Summary: This study evaluated the effects of a peristaltic pump and a two-fluid pneumatic nozzle on the stability parameters of oil/water emulsions. The results showed that pumping and atomisation led to more homogeneous emulsions with smaller sizes and better stability. This study can contribute to determining operating conditions for encapsulating by spray drying.
JOURNAL OF FOOD ENGINEERING
(2022)
Article
Engineering, Environmental
Jared Church, Marjorie R. Willner, Brittany R. Renfro, Yun Chen, Daniela Diaz, Woo Hyoung Lee, Cari S. Dutcher, Jeffrey G. Lundin, Danielle M. Paynter
Summary: The study investigated the relationship between emulsion stability in shipboard bilgewater and critical micelle concentration in the presence of oil (CMCIFT), finding that CMCIFT was most closely related to emulsion stability. It was observed that emulsions with surfactant concentrations below CMCIFT exhibited oil separation, regardless of homogenization intensities and oil concentrations.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Engineering, Environmental
Xue-Hui Ge, Chengzi Tian, Lin Zheng, Xiaoda Wang, Zhixian Huang, Ting Qiu
Summary: In this study, a method for measuring the dynamic interfacial tension of three-phase emulsion based on microfluidic devices was developed. Through geometric analysis and simulated images, combined with high-speed photographic images, the interfacial tension of flowing droplets can be obtained in real time and demonstrated through Ca-t images.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Tahany Mahmoud, Nadia A. Samak, M. M. Abdelhamid, A. A. Aboulrous, Jianmin Xing
Summary: The study focused on enhancing biosurfactant production using bacteria isolated from Egyptian crude oils, showing promising results in improving surfactin and trehalose productivity by optimizing carbon sources and cultivation strategies. The properties and effectiveness of the produced biosurfactants were demonstrated through various tests, indicating their potential for enhanced oil recovery.
Article
Chemistry, Physical
Olasehinde Owoseni, Yang Su, Srinivasa Raghavan, Arijit Bose, Vijay T. John
Summary: The integration of cationic and hydrophobic functionalities into hydrophobically modified chitosan (HMC) biopolymer facilitates complementary emulsion stabilization with negatively charged halloysite clay nanotubes (HNT). The adsorption of the cationic HMC onto the negatively charged HNT modifies the surface wettability of the nanotubes, facilitating the attachment of the nanotubes to the oil-water interface. Hydrophobic interaction, insertion of HMC hydrophobes into the oil phase, and electrostatic interactions between HMC and HNT are proposed as key mechanisms driving the increased emulsion stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Applied
Lei Zhou, Jinyuan Jiang, Fan Feng, Jingyu Wang, Jiaming Cai, Lujuan Xing, Guanghong Zhou, Wangang Zhang
Summary: This study investigated the effects of different carboxymethyl cellulose (CMC) concentrations on the properties of myofibrillar protein (MP)-soybean oil emulsions. The results showed that CMC addition improved the stability and texture of the emulsions, but decreased protein digestibility and water holding capacity. Lower CMC concentrations increased the hardness and gumminess of the emulsion gel, while higher concentrations decreased texture properties.
CARBOHYDRATE POLYMERS
(2023)
Article
Engineering, Environmental
Xiao Liang, Jiyizhe Zhang, Min Li, Kai Wang, Guangsheng Luo
Summary: Surfactant adsorption plays an important role in microfluidic droplet formation, and this research proposes a method to determine the time-evolving interfacial tension using a differential pressure based microfluidic platform. The study shows that increasing surfactant concentration and flow rate promote surfactant adsorption.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Mohd Sofi Numin, Almila Hassan, Khairulazhar Jumbri, Anita Ramli, Noorazlenawati Borhan
Summary: Chemical injection in chemical enhanced oil recovery (CEOR) can improve oil recovery by modifying the injected fluid characteristics to enhance interaction with oil in the reservoir. This study investigates the interfacial tension (IFT) reduction mechanism of an alkali-surfactant-polymer (ASP) solution with crude oil through experimental and molecular dynamics simulation approaches.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Xiao Liang, Min Li, Kai Wang, Guangsheng Luo
Summary: In this study, a differential pressure-based method is proposed to investigate the adsorption behavior of surfactants in microfluidics. By analyzing auto-recognized images and the waveform of differential pressure, the interfacial tension and adsorption rates are obtained, providing an in-depth understanding of the adsorption mechanism and kinetic characteristics of surfactants in microfluidic systems.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Energy & Fuels
Peyman Koreh, Mostafa Lashkarbolooki, Majid Peyravi, Mohsen Jahanshahi
Summary: This study investigated the performance of different types of surfactants on the surface activity, emulsion size, and surface charge of five oil samples. The effects of various parameters on the interfacial tension of crude oil/surfactant solutions were comprehensively analyzed. The results showed that the properties of the surfactants, crude oil type, and ionic strength influenced the interfacial tension, surface charge, and microemulsion size, but not in a straightforward manner. Among the surfactants considered, the cationic surfactant showed the lowest dependency on the crude oil type, while the non-ionic surfactant showed the highest dependency. CTAB cationic surfactant exhibited the most efficient performance with a microemulsion size of 102 nm and surface charge near the isoelectric point.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Nanoscience & Nanotechnology
Robin Dufossez, Marie-Pierre Krafft, Sylvain Ursuegui, Michel Mosser, Safae Mouftakhir, Ketty Pernod, Guilhem Chaubet, Michael Ryckelynck, Alain Wagner
Summary: Droplet-based microfluidics is advancing the development of miniaturized and sensitive enzyme-linked immunosorbent assays (ELISAs). This article investigates the impact of surfactant structure on the efficiency and stability of the antibody grafting process on droplets. It demonstrates that short linkers lead to high functionalization efficiency, while long linkers enhance stability, with an intermediate size required to balance both parameters. The optimal structure is a PEG4 linker connecting a polar di-azide head and a per-fluoropolyether tail.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Zulong Zhao, Zhiyu Xi, Na Jia, Daoyong Yang
Summary: Experimental and theoretical techniques have been developed to quantify the behavior of alkaline water-heavy oil emulsion systems at high pressures and elevated temperatures. The study found that changes in temperature and pressure affect the properties of emulsions, and the role of sodium carbonate and sodium hydroxide in the systems are different.
