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Rai R, Tripathi A, Bhattacharyya A. Bubble growth and detachment process in surfactant solutions: a study of 90% pure sodium dodecyl sulfate. PARTICULATE SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1080/02726351.2022.2141162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ronal Rai
- Department of Physics, Sikkim University, Tadong, Gangtok, Sikkim, India
| | - Ajay Tripathi
- Department of Physics, Sikkim University, Tadong, Gangtok, Sikkim, India
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Bubble Rise Velocity and Surface Mobility in Aqueous Solutions of Sodium Dodecyl Sulphate and n-Propanol. MINERALS 2019. [DOI: 10.3390/min9120743] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Aqueous solutions of simple alcohols exhibit many anomalies, one of which is a change in the mobility of the bubble surface. This work aimed to determine the effect of the presence of another surface-active agent on bubble rise velocity and bubble surface mobility. The motion of the spherical bubble in an aqueous solution of n-propanol and sodium dodecyl sulphate (SDS) was monitored by a high-speed camera. At low alcohol concentrations (xP < 0.01), both the propanol and SDS molecules behaved as surfactants, the surface tension decreased and the bubble surface was immobile. The effect of the SDS diminished with increasing alcohol concentrations. In solutions with a high propanol content (xP > 0.1), the SDS molecules did not adsorb to the phase interface and thus, the surface tension of the solution was not reduced with the addition of SDS. Due to the rapid desorption of propanol molecules from the bottom of the bubble, a surface tension gradient was not formed. The drag coefficient can be calculated using formulas for the mobile surface of a spherical bubble.
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Wu Z, Shu T, Zhang M, Liu W. Foam fractionation for effective recovery of leaf protein from alfalfa (Medicago sativa L.). SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1586725] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Zhaoliang Wu
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Ting Shu
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Mengwei Zhang
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Wei Liu
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
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Li W, Gupta NR. Buoyancy-Driven Motion of Bubbles in the Presence of Soluble Surfactants in a Newtonian Fluid. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b04788] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Weihua Li
- Department of Chemical Engineering, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Nivedita R. Gupta
- Department of Chemical Engineering, University of New Hampshire, Durham, New Hampshire 03824, United States
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