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Walteros‐león M, Álvarez‐láinez ML. Colloidal and rheological properties of natural rubber latex concentrated with hydroxyethyl cellulose and sodium dodecyl sulphate. J Appl Polym Sci 2022; 139:52034. [DOI: 10.1002/app.52034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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2
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Affiliation(s)
- Chunxin Fan
- Department of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, People’s Republic of China
| | - Rui Ma
- Department of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, People’s Republic of China
| | - Yubin Wang
- Department of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, People’s Republic of China
| | - Jianhong Luo
- Department of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, People’s Republic of China
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Aleem W, Mellon N, Khan JA, Al-Kayiem HH. Experimental investigation and mathematical modeling of oil/water emulsion separation effectiveness containing alkali-surfactant-polymer. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1738244] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Waqas Aleem
- Department of Chemical Engineering, Muhammad Nawaz Sharif University of Engineering and Technology, Multan, Pakistan
| | - Nurhayati Mellon
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, Seri Iskandar, Malaysia
| | - Javed Akbar Khan
- Shale Gas Research Group, Universiti Teknologi PETRONAS, Seri Iskandar, Malaysia
| | - Hussain H. Al-Kayiem
- Center of Research in Enhanced Oil Recovery (COREOR), Universiti Teknologi PETRONAS, Seri Iskandar, Malaysia
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Affiliation(s)
- Waqas Aleem
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Sri –Iskandar, Perak, Malaysia
| | - Nurhayati Mellon
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Sri –Iskandar, Perak, Malaysia
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Kamp J, Villwock J, Kraume M. Drop coalescence in technical liquid/liquid applications: a review on experimental techniques and modeling approaches. REV CHEM ENG 2017. [DOI: 10.1515/revce-2015-0071] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe coalescence phenomenon of drops in liquid/liquid systems is reviewed with particular focus on its technical relevance and application. Due to the complexity of coalescence, a comprehensive survey of the coalescence process and the numerous influencing factors is given. Subsequently, available experimental techniques with different levels of detail are summarized and compared. These techniques can be divided in simple settling tests for qualitative coalescence behavior investigations and gravity settler design, single-drop coalescence studies at flat interfaces as well as between droplets, and detailed film drainage analysis. To model the coalescence rate in liquid/liquid systems on a technical scale, the generic population balance framework is introduced. Additionally, different coalescence modeling approaches are reviewed with ascending level of detail from empirical correlations to comprehensive film drainage models and detailed computational fluid and particle dynamics.
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Souza WJ, Santos KMC, Cruz AA, Franceschi E, Dariva C, Santos AF, Santana CC. EFFECT OF WATER CONTENT, TEMPERATURE AND AVERAGE DROPLET SIZE ON THE SETTLING VELOCITY OF WATER-IN-OIL EMULSIONS. Braz J Chem Eng 2015. [DOI: 10.1590/0104-6632.20150322s00003323] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Roques-Carmes T, Monnier H, Portha JF, Marchal P, Falk L. Influence of the plate-type continuous micro-separator dimensions on the efficiency of demulsification of oil-in-water emulsion. Chem Eng Res Des 2014. [DOI: 10.1016/j.cherd.2014.02.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lupi FR, Gabriele D, Baldino N, Seta L, de Cindio B, De Rose C. Stabilization of meat suspensions by organogelation: A rheological approach. EUR J LIPID SCI TECH 2012. [DOI: 10.1002/ejlt.201200212] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Feng W, Singhal N, Swift S. Drainage mechanism of microbubble dispersion and factors influencing its stability. J Colloid Interface Sci 2009; 337:548-54. [DOI: 10.1016/j.jcis.2009.05.054] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2008] [Revised: 04/03/2009] [Accepted: 05/21/2009] [Indexed: 11/25/2022]
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Joshi KS, Baumann A, Jeelani SAK, Blickenstorfer C, Naegeli I, Windhab EJ. Mechanism of bubble coalescence induced by surfactant covered antifoam particles. J Colloid Interface Sci 2009; 339:446-53. [PMID: 19726048 DOI: 10.1016/j.jcis.2009.07.072] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2009] [Revised: 06/04/2009] [Accepted: 07/13/2009] [Indexed: 11/25/2022]
Abstract
Mechanism of inter-bubble coalescence by an aqueous fatty alcohol particle suspension antifoam containing a nonionic surfactant has been investigated. By observing visually two colliding air bubbles in a liquid pool in the presence of the antifoam, a four-step mechanism is identified. The role of the surfactant in the antifoam is, for the first time, proposed. A surface tension gradient due to the local surfactant concentration difference enables a surfactant laden hydrophobic particle located on bubble surface to move from the periphery of a liquid film between two colliding air bubbles to their region of contact. Drop volume tensiometry and macroscopic foam column experiments are used to further prove this observation. Subsequently, the particle bridges and dewets the bubbles resulting in film rupture. The rate of drainage of the liquid film depends on the particle hydrophobicity, which necessitates complete surfactant desorption from particle surface. This is corroborated experimentally by Wilhelmy plate tensiometry. In addition, cryo-scanning electron and atomic force microscopy are used to determine the particle shape and the force for its entry into the bubble.
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Affiliation(s)
- K S Joshi
- Laboratory of Food Process Engineering, Institute of Food Science and Nutrition, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland
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Frising T, Noïk C, Dalmazzone C, Peysson Y, Palermo T. Contribution of the Sedimentation and Coalescence Mechanisms to the Separation of Concentrated Water-in-Oil Emulsions. J DISPER SCI TECHNOL 2008. [DOI: 10.1080/01932690701781501] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Frising T, Noïk C, Dalmazzone C. The Liquid/Liquid Sedimentation Process: From Droplet Coalescence to Technologically Enhanced Water/Oil Emulsion Gravity Separators: A Review. J DISPER SCI TECHNOL 2006. [DOI: 10.1080/01932690600767098] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Abstract
Aqueous dispersions of alkoxylated alcohol block copolymer (BCP) drops are investigated as antifoams. A model aqueous nonionic surfactant solution of Polysorbate 20 and an industrial white water suspension are used as foaming systems. Visual evidence obtained using a two-bubble technique involving a CCD camera coupled with high magnification lenses clearly revealed the role of BCP droplets in the bubble coalescence process. The enhancement of bubble coalescence decreased as the temperature increased from 25 to 60 degrees C, which is due to the corresponding decrease in the rigidity associated with the weak interfacial structure and reduced viscosity of the BCP drops. The antifoaming efficiency measured in the macroscopic recirculation foam column increased with temperature from about 13 to 26 degrees C (attaining a maximum) and decreased as temperature increased further. Oscillatory thermo-rheometric measurements showed a sudden increase in the storage modulus (G') by several orders of magnitude, indicating gel formation initiated at about 13 degrees C and having a maximum at around 26 degrees C for an aqueous solution of the BCP above a critical concentration of around 20 wt %. Results obtained using small-angle X-ray scattering, micro-differential scanning calorimetry, and proton nuclear magnetic resonance confirmed the existence of ordered gel-like structures. Furthermore, macroscopic tests using a sparged air foam column showed a significant increase in antifoaming efficiency when highly hydrophobic particles are embedded in the BCP drops dispersed in water.
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Affiliation(s)
- K S Joshi
- Laboratory of Food Process Engineering, Institute of Food Science and Nutrition, Swiss Federal Institute of Technology, ETH-Zentrum, Schmelzbergstrasse 7, 8092 Zürich, Switzerland
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Joshi K, Jeelani SK, Blickenstorfer C, Naegeli I, Windhab E. Influence of fatty alcohol antifoam suspensions on foam stability. Colloids Surf A Physicochem Eng Asp 2005. [DOI: 10.1016/j.colsurfa.2005.01.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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