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Baigadilov A, Colombano S, Omirbekov S, Cochennec M, Davarzani D, Lion F, Oxarango L, Bodiguel H. Surfactant foam injection for remediation of diesel-contaminated soil: A comprehensive study on the role of co-surfactant in foaming formulation enhancement. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 930:172631. [PMID: 38670385 DOI: 10.1016/j.scitotenv.2024.172631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 04/10/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024]
Abstract
Aqueous foam injection is a promising technique for in-situ remediation of soil and aquifers contaminated by petroleum products. However, the application efficiency is strongly hindered by foam's instability upon contact with hydrocarbons. Addressing this, we propose a new binary surfactant mixture of Sodium Dodecyl Sulfate (SDS) and Cocamidopropyl Hydroxysultaine (CAHS). This study investigates CAHS's role as a co-surfactant in enhancing foam stability against antifoaming diesel oil under static and dynamic conditions. Using a dynamic foam analyzer (DFA-100), we assessed static foam's stability by monitoring decay profiles and bubble growth over time. The results revealed that the highest stability can be reached at a CAHS to SDS ratio of 50:50, increasing the half-life of the foam by 7.7 times. Remarkably, our analyses at bulk and bubble scales also elucidated the mechanisms behind the enhanced foam stability of the proposed binary surfactant mixture in the absence and presence of diesel. Additionally, in a 1D sand column, the SDS-CAHS mixture demonstrated more than twofold improvement of the Resistance Factor, attributed to the better survival of the lamellae due to the reduced rate of their destruction. This formulation also yielded a recovery improvement of >10 % compared to SDS foam. The significant improvements in stability and performance of the SDS-CAHS (50:50) mixture were credited to a robust pseudo-emulsion film formation, creating a higher oil entry barrier. This reinforcement and the surfactant molecules' synergistic interactions at the gas-liquid-oil interface significantly contributed to the overall effectiveness.
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Affiliation(s)
- Adil Baigadilov
- BRGM (French Geological Survey), F-45060 Orléans, France; Univ. Grenoble Alpes, CNRS, Grenoble INP, LRP, Grenoble 38000, France; Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, IGE, Grenoble 38000, France.
| | | | - Sagyn Omirbekov
- National Laboratory Astana, Nazarbayev University, Astana 010000, Kazakhstan
| | | | | | - Fabien Lion
- BRGM (French Geological Survey), F-45060 Orléans, France
| | - Laurent Oxarango
- Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, IGE, Grenoble 38000, France
| | - Hugues Bodiguel
- Univ. Grenoble Alpes, CNRS, Grenoble INP, LRP, Grenoble 38000, France
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2
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Min F, Zhang ZY, Qu Z, Gao J, Shi X, Long H, Li Y, Chen S, Dong D, Yi Y, Jiang L, Yang J, Li T, Qiao Y, Song Y. Humidity-Controlled Molecular Assembly and Photoisomerization Behavior with a Bubble-Assisted Patterning Approach. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301362. [PMID: 37170715 DOI: 10.1002/smll.202301362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/20/2023] [Indexed: 05/13/2023]
Abstract
Precise control of molecular assembly is of great significance in the application of functional molecules. This work has systematically investigated the humidity effect in bubble-assisted molecular assembly. This work finds humidity is critical in the evolution of the soft confined space, leading to the formation of microscale liquid confined space under high humidity, and nanoscale liquid confined space under low humidity. It is also revealed that the differences in surface wettability and adhesion play the key role. Consequently, a flat pattern with thermodynamically favorable ordered structure and a sharp pattern with dynamically favorable disordered structure are achieved, which show different solid-state photoisomerization behaviors and photoresponsiveness. Interestingly, conductivity of sharp pattern with disordered structure is higher than that of flat pattern with layered ordered structure due to electronic transport mechanism of different spatial dimensions. This work opens a new way for manipulating the molecular self-assembly to control the morphology and function of molecular patterns.
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Affiliation(s)
- Fanyi Min
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing National Laboratory for Molecular Sciences (BNLMS), University of the Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Zhao-Yang Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Zhiyuan Qu
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing National Laboratory for Molecular Sciences (BNLMS), University of the Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Jie Gao
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing National Laboratory for Molecular Sciences (BNLMS), University of the Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Xiaosong Shi
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Haoran Long
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China
| | - Yixin Li
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Shengnan Chen
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing National Laboratory for Molecular Sciences (BNLMS), University of the Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Dongfang Dong
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Yuanping Yi
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Lang Jiang
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Juehan Yang
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China
| | - Tao Li
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Yali Qiao
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing National Laboratory for Molecular Sciences (BNLMS), University of the Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yanlin Song
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing National Laboratory for Molecular Sciences (BNLMS), University of the Chinese Academy of Sciences, Beijing, 100190, P. R. China
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3
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Effects of the Surfactant, Polymer, and Crude Oil Properties on the Formation and Stabilization of Oil-Based Foam Liquid Films: Insights from the Microscale. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2022.121194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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4
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Sun N, Yao X, Xu Z, Li J, Yang N, Lyu D, Zhao G, Dai C. Janus Nanographene Oxide with Aerophilic/Hydrophilic Characteristics for Enhancing Foam Stability in High-Temperature Reservoirs. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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5
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Mikhailovskaya A, Chatzigiannakis E, Renggli D, Vermant J, Monteux C. From Individual Liquid Films to Macroscopic Foam Dynamics: A Comparison between Polymers and a Nonionic Surfactant. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:10768-10780. [PMID: 35998760 PMCID: PMC9454262 DOI: 10.1021/acs.langmuir.2c00900] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 08/12/2022] [Indexed: 06/15/2023]
Abstract
Foams can resist destabilizaton in ways that appear similar on a macroscopic scale, but the microscopic origins of the stability and the loss thereof can be quite diverse. Here, we compare both the macroscopic drainage and ultimate collapse of aqueous foams stabilized by either a partially hydrolyzed poly(vinyl alcohol) (PVA) or a nonionic low-molecular-weight surfactant (BrijO10) with the dynamics of individual thin films at the microscale. From this comparison, we gain significant insight regarding the effect of both surface stresses and intermolecular forces on macroscopic foam stability. Distinct regimes in the lifetime of the foams were observed. Drainage at early stages is controlled by the different stress-boundary conditions at the surfaces of the bubbles between the polymer and the surfactant. The stress-carrying capacity of PVA-stabilized interfaces is a result of the mutual contribution of Marangoni stresses and surface shear viscosity. In contrast, surface shear inviscidity and much weaker Marangoni stresses were observed for the nonionic surfactant surfaces, resulting in faster drainage times, both at the level of the single film and the macroscopic foam. At longer times, the PVA foams present a regime of homogeneous coalescence where isolated coalescence events are observed. This regime, which is observed only for PVA foams, occurs when the capillary pressure reaches the maximum disjoining pressure. A final regime is then observed for both systems where a fast coalescence front propagates from the top to the bottom of the foams. The critical liquid fractions and capillary pressures at which this regime is obtained are similar for both PVA and BrijO10 foams, which most likely indicates that collapse is related to a universal mechanism that seems unrelated to the stabilizer interfacial dynamics.
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Affiliation(s)
- Alesya Mikhailovskaya
- Soft
Matter Science and Engineering, ESPCI Paris, CNRS, PSL University, Sorbonne University, 75005 Paris, Franceand
- Institut
de Chimie et des Matériaux Paris-Est, CNRS UMR 7182, 2-8 rue Henri Dunant, 94320 Thiais, France
| | - Emmanouil Chatzigiannakis
- Department
of Materials, ETH Zürich, Vladimir Prelog Weg 5, 8032 Zürich, Switzerland and
- Polymer
Technology Group, Eindhoven University of
Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands
| | - Damian Renggli
- Department
of Materials, ETH Zürich, Vladimir Prelog Weg 5, 8032 Zürich, Switzerland and
| | - Jan Vermant
- Department
of Materials, ETH Zürich, Vladimir Prelog Weg 5, 8032 Zürich, Switzerland and
| | - Cécile Monteux
- Soft Matter
Science and Engineering, ESPCI Paris, CNRS,
PSL University, Sorbonne University, 75005 Paris, France
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6
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Application of Xanthan Gum and Hyaluronic Acid as Dermal Foam Stabilizers. Gels 2022; 8:gels8070413. [PMID: 35877498 PMCID: PMC9321585 DOI: 10.3390/gels8070413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/27/2022] [Accepted: 06/29/2022] [Indexed: 11/16/2022] Open
Abstract
Foams are increasingly popular in the field of dermatology due to their many advantages such as easy spreading, good skin sensation, and applicability in special skin conditions. One of the critical points of foam formulation is the choice of the appropriate stabilizing ingredients. One of the stability-increasing strategies is retarding the liquid drainage of liquid films from the foam structure. Therefore, our aim was the application of different hydrogel-forming polymers in order to retain the stabilizing liquid film. Dexpanthenol and niacinamide-containing foams were formulated, where xanthan gum and hyaluronic acid were used as foam-stabilizing polymers. Amplitude (LVE range) and frequency sweep (G’, G”, tanδ, and frequency dependency) were applied as structure- and stability-indicating rheological parameters. The rheological data were compared with the results of the cylinder method, microscopical images, and the spreadability measurements. The application of the gel-forming polymers increased the stability of the dermal foams (increased LVE range, G’ values, and decreased frequency dependency). These results were in correlation with the results of the cylinder and spreadability tests. It was concluded that in terms of both foam formation and stability, the combination of xanthan gum and dexpanthenol can be ideal.
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7
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Molecular Dynamics Simulation and Experiment on the Microscopic Mechanism of the Effect of Wax Crystals on the Burst and Drainage of Foams. SUSTAINABILITY 2022. [DOI: 10.3390/su14116778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In recent years, with the goal of “carbon peaking and carbon neutralization”, the CO2 flooding technology in carbon capture, utilization, and storage (CCUs) has been paid great attention to the oil fields. However, the CO2 flooding of crude oil may produce foams in the oil and gas separation process. In addition, the precipitation of wax components in crude oil might enhance the stability characteristics of these foams and lower the separator’s efficiency. Based on a crude oil depressurization foaming device, the influence of wax crystals on the bursting of oil foam was studied using simulated oil, and the microstructure of the wax crystal and foam liquid film was observed using freeze-etching and microscopic observation. In addition, the gas–liquid interface model of the wax oil was established by a molecular dynamics (MD) simulation to analyze the influence mechanism of wax crystals on foam drainage and gas diffusion among foams in the microlayer. The results show that the precipitation of wax crystals overall reduces the rate of defoaming and drainage and increases the grain diameter of the foam. The formation and growth of the wax crystal-shaped network impede the flow of liquid in the drainage channel and stabilize the foam. Moreover, it impedes the diffusion of CO2 among foams, inhibiting the bursting of the foams. The results of the combined experiments and MD simulation verify the accuracy and applicability of the molecular model, which further clarifies the effect of wax crystals on foam stability and its mechanism of action on foam film. These findings are a benchmark for the enhancement of defoaming and separation efficiency and a theoretical framework for future study and modeling.
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Jiang F, Chen Y, Ye Z, Pang S, Xu B. Efficient synthesis of POSS based amphiphilic nanoparticles via thiol-ene "click" reaction to improve foam stability. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127803] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Gu Q, Xue X, Darwesh OM, Habimana P, Liu W, Wu Z, Li Z. Random Packing Performance in Continuous Foam Fractionation. Chem Eng Technol 2021. [DOI: 10.1002/ceat.202100097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Qianfeng Gu
- Hebei University of Technology School of Chemical Engineering and Technology 300130 Tianjin China
| | - Xiaochen Xue
- Hebei University of Technology School of Chemical Engineering and Technology 300130 Tianjin China
| | - Osama M. Darwesh
- National Research Centre Department of Agricultural Microbiology 12622 Cairo Egypt
| | - Pascal Habimana
- Hebei University of Technology School of Chemical Engineering and Technology 300130 Tianjin China
| | - Wei Liu
- Hebei University of Technology School of Chemical Engineering and Technology 300130 Tianjin China
| | - Zhaoliang Wu
- Hebei University of Technology School of Chemical Engineering and Technology 300130 Tianjin China
| | - Zhiqiang Li
- Hebei University of Technology School of Chemical Engineering and Technology 300130 Tianjin China
- Hebei University of Technology National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization 300130 Tianjin China
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10
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Microstructure evolution and partial coalescence in the whipping process of oleofoams stabilized by monoglycerides. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106245] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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11
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Yanagisawa N, Tani M, Kurita R. Dynamics and mechanism of liquid film collapse in a foam. SOFT MATTER 2021; 17:1738-1745. [PMID: 33594403 DOI: 10.1039/d0sm02153a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Foams have unique properties that distinguish them from ordinary liquids and gases, and are ubiquitously observed in nature, both in biological systems and industrial products. Foams are known to eventually collapse over time; given their wide-range industrial application, understanding how bubbles in a foam collapse is an important aspect for product longevity and tailoring physical properties. Previously, it was shown that droplets are emitted during the collective bubble collapse, however the mechanism of the droplet emission in a foam is not yet clearly understood. It is directly related to the stability of the foam, thus we quantitatively investigate collapse dynamics in liquid films in a foam, and identify some unique features. When one film breaks, we see that the oscillation of the vertical Plateau border to which it is connected induces anomalous liquid transport from the edge of the border to the center. Once a crack appears near the border and a collapse front is formed, we find that the curvature of the front reverses as it migrates, followed by the emergence and emission of droplets. We elucidate the origins of this behavior and discuss the stability of foams, establishing how the characteristic time scales of the process relate to each other.
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Affiliation(s)
- Naoya Yanagisawa
- Department of Physics, Tokyo Metropolitan University, 1-1 Minamioosawa, Hachiouji-Shi, Tokyo 192-0397, Japan.
| | - Marie Tani
- Department of Physics, Tokyo Metropolitan University, 1-1 Minamioosawa, Hachiouji-Shi, Tokyo 192-0397, Japan.
| | - Rei Kurita
- Department of Physics, Tokyo Metropolitan University, 1-1 Minamioosawa, Hachiouji-Shi, Tokyo 192-0397, Japan.
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12
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Effects of crude oil characteristics on foaming and defoaming behavior at separator during CO2 flooding. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125562] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Tsuritani K, Inasawa S. Scaling law for the kinetics of water imbibition in polydisperse foams. RSC Adv 2021; 11:33093-33101. [PMID: 35493588 PMCID: PMC9042101 DOI: 10.1039/d1ra06392h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 09/26/2021] [Indexed: 11/26/2022] Open
Abstract
We investigated the kinetics of water imbibition in polydisperse foams. We used a Hele-Shaw cell, and horizontal imbibition was observed for a timescale of up to 103 s in which the gravity effect was negligible. While several papers have reported kinetics for imbibition in foams, imbibition kinetics in polydisperse foams and its variations in longer timescales are not well understood. The tip position of imbibition was proportional to the square root of time in the initial stage of imbibition, but it showed plateauing in the late stage of imbibition. We evaluated the proportional constant A in the initial stage of imbibition as a kinetic constant for the time-dependent increase in the tip position, which showed a clear dependency on the initial and final water volume fractions in the foams. Conversely, the mean initial radius of the curvature and the channel length in the Plateau borders did not show any clear correlations with A, although both valuables are frequently used in modeling for liquid imbibition in foams. On the basis of the t1/2 dependence, the correlation of A with the water volume fraction and the increase in the water volume fraction during imbibition, we proposed a simple equation to describe the tip position over the entire period of imbibition. We used them to scale all of the experimental data, which showed good agreement with the theoretical line. This clearly showed that the water volume fraction in the foams during imbibition was the key factor to quantitatively describe the rate of water imbibition. Features in the kinetics of imbibition were discussed. Horizontal imbibition of water in foams is scaled well by a simple mathematical expression that considers t1/2 dependence and changes in volume fraction of water in foams.![]()
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Affiliation(s)
- Kanoko Tsuritani
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Susumu Inasawa
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
- Department of Applied Physics and Chemical Engineering, School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
- Department of Chemical Engineering, School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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14
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Denkov N, Tcholakova S, Politova-Brinkova N. Physicochemical control of foam properties. Curr Opin Colloid Interface Sci 2020. [DOI: 10.1016/j.cocis.2020.08.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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15
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Clarke C, Spyropoulos F, Norton IT. A flow velocity dependence of dynamic surface tension in Plateau borders of foam. J Colloid Interface Sci 2020; 573:348-359. [PMID: 32298928 DOI: 10.1016/j.jcis.2020.04.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 04/05/2020] [Accepted: 04/06/2020] [Indexed: 11/24/2022]
Abstract
HYPOTHESIS Liquid drainage through foams is a multiscale process, that primarily occurs through channels known as Plateau borders (PBs). Recent experimental studies of isolated PBs have observed variations in channel surface tension, γ, with liquid flow rate, Q, for systems containing soluble low molecular weight surfactant (LMWS). The current study proposes that the dynamic surface tension (DST) could be responsible for this effect, where the residence time of surfactant molecules in the PB is similar to the time required for their adsorption to the channel interface. EXPERIMENTS Profile geometries of isolated 'ideal' PB's were created in a bespoke experimental setup at controlled forced liquid flow rates. Average surfactant residence times, τRes, were calculated for solutions of Sodium dodecylsulfate (SDS), Tween 20 (T20) and Tween 80 (T80), and used to calculate corresponding average DST values in discrete regions of measured PB profiles. DST values were combined with microscale drainage theory to assess the potential physical implications on liquid flow. FINDINGS Significant variations in the magnitude of γ were calculated based on surfactant characteristics, where only the rapid adsorption of SDS was sufficient to produce DST values approaching equilibrium. These findings seriously question assumptions of near equilibrium surface tension in LMWS foam systems above their critical micelle concentration (CMC). Furthermore, the presence of surface tension gradients identified using this discrete approach, highlights the need to further refine the current theory to a continuous approach incorporating Marangoni effects.
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Affiliation(s)
- Christopher Clarke
- Department of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
| | - Fotis Spyropoulos
- Department of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Ian T Norton
- Department of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
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16
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Yan T, Song B, Cui Z, Pei X. Highly wet aqueous foams stabilized by an amphiphilic bio-based hydrogelator derived from dehydroabietic acid. SOFT MATTER 2020; 16:2285-2290. [PMID: 32040130 DOI: 10.1039/d0sm00002g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Exploration of novel molecular aggregates that stabilize foam systems is helpful to optimize foam properties. Herein, solutions of a rosin-based low-molecular-weight hydrogelator, abbreviated as R-6-AO, were used to generate foams above the critical gelation temperature (Tgel). The foams with R-6-AO concentrations above the critical gelation concentration were very stable below Tgel. The high stability of the foams under such conditions was attributed to the self-assembly of nanoscale fibers of R-6-AO in the liquid films of the foams, leading to extremely slow drainage of water. The foams showed strong water retention and were classified as very wet foams. For example, the foams generated from 10 mM (0.44 wt%) R-6-AO solution subjected to a fast cooling process contained about 45 vol% trapped water after 2000 min. In comparison, the water volume fraction of a 10 mM sodium dodecyl sulfate (SDS) foam decreased from 20 vol% to 1 vol% within 18 min. Because the growth, elongation, and cross-linking of the assembled nanofibers in the liquid films were affected by the cooling process, the stability of these foams also depended on the initial preparation temperature. The present system reveals the importance of microstructures in regulating foam behavior and serves as a new type of condition-sensitive intelligent foam.
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Affiliation(s)
- Tingting Yan
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China.
| | - Binglei Song
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China.
| | - Zhenggang Cui
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China.
| | - Xiaomei Pei
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China.
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17
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Zhou J, Ranjith P, Wanniarachchi W. Different strategies of foam stabilization in the use of foam as a fracturing fluid. Adv Colloid Interface Sci 2020; 276:102104. [PMID: 31978640 DOI: 10.1016/j.cis.2020.102104] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 01/01/2020] [Accepted: 01/06/2020] [Indexed: 10/25/2022]
Abstract
An attractive alternative to mitigate the adverse effects of conventional water-based fluids on the efficiency of hydraulic fracturing is to inject foam-based fracking fluids into reservoirs. The efficiency of foaming fluids in subsurface applications largely depends on the stability and transportation of foam bubbles in harsh environments with high temperature, pressure and salinity, all of which inevitably lead to poor foam properties and thus limit fracturing efficiency. The aim of this paper is to elaborate popular strategies of foam stabilization under reservoir conditions. Specifically, this review first discusses three major mechanisms governing foam decay and summarizes recent progress in research on these phenomena. Since surfactants, polymers, nanoparticles and their composites are popular options for foam stabilization, their stabilizing effects, especially the synergies in composites, are also reviewed. In addition to reporting experimental results, the paper also reports recent advances in interfacial properties via molecular dynamical simulation, which provide new insights into gas/liquid interfacial properties under the influence of surfactants at molecular scale. The results of both experiments and simulations indicate that foam additives play an essential role in foam stability and the synergic effects of surfactants and nanoparticles exhibit more favorable performance.
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