Surface tension of dilute alcohol-aqueous binary fluids: n-Butanol/water, n-Pentanol/water, and n-Hexanol/water solutions

Cheng, Kuok; Park, Chanwoo

doi:10.1007/s00231-017-1976-9

Cited by 28 publications

(30 citation statements)

References 13 publications

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“…For this reason, the surface tension of the butanol-added solutions sharply decreases with increasing butanol concentration until it reaches a critical concentration, after which the surface tension decreases monotonically. The critical mass concentrations of alcohol/water solutions with butanol, pentanol, and hexanol were 3%, 0.5% and 0.3%, respectively [43]. In general, the σ of n-butanol/water mixtures as well as other alcohol/water mixtures depend on their corresponding temperature and composition, and even at low n-butanol concentrations of 0 to 1 wt%, the σ value varies [43,44].…”

Section: Effect Of Surface Tension Of the Fluids On Capillary Rise Dynamicsmentioning

confidence: 97%

Effects of Tube Radius and Surface Tension on Capillary Rise Dynamics of Water/Butanol Mixtures

et al. 2021

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Capillary-driven action is an important phenomenon which aids the development of high-performance heat transfer devices, such as microscale heat pipes. This study examines the capillary rise dynamics of n-butanol/water mixture in a single vertical capillary tube with different radii (0.4, 0.6, and 0.85 mm). For liquids, distilled water, n-butanol, and their blends with varying concentrations of butanol (0.3, 0.5, and 0.7 wt.%) were used. The results show that the height and velocity of the capillary rise were dependent on the tube radius and liquid surface tension. The larger the radius and the higher the surface tension, the lower was the equilibrium height (he) and the velocity of rise. The process of capillary rise was segregated into three characteristic regions: purely inertial, inertial + viscous, and purely viscous regions. The early stages (purely inertial and inertial + viscous) represented the characteristic heights h1 and h2, which were dominant in the capillary rise process. There were linear correlations between the characteristic heights (h1, h2, and he), tube radius, and surface tension. Based on these correlations, a linear function was established between each of the three characteristic heights and the consolidated value of tube radius and surface tension (σL/2πr2).

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Section: Effect Of Surface Tension Of the Fluids On Capillary Rise Dynamicsmentioning

confidence: 97%

Effects of Tube Radius and Surface Tension on Capillary Rise Dynamics of Water/Butanol Mixtures

et al. 2021

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“…Local increase of the free interface temperature leads to a surface tension gradient and triggers the thermocapillary effect [16] (a special case of the Marangoni effect [17]), manifested by thermocapillary flows with a distinctive shape of Bénard cells [18] and deformation of the free interface. A local temperature increase usually leads to a decrease of the surface tension in the hotter region, and to interfacial flows from the hotter region to the colder region, though few liquids are known to exhibit an opposite behavior of the surface tension [19], both illustrated in Figs.1(c) and 1(d). In case the liquid film is thinner than the penetration depth of the SPP into the bulk, the liquid deformation is coupled back to the Maxwell equations through the changes of the liquid's dielectric constant, and together with the heat transport form a complete set of coupled equations.…”

mentioning

confidence: 99%

Nonlocal and Nonlinear Surface Plasmon Polaritons and Optical Spatial Solitons Induced by the Thermocapillary Effect

Rubin

Fainman

2018

Phys. Rev. Lett.

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We study the propagation of surface plasmon polaritons (SPPs) on a metal surface which hosts a thin film of a liquid dielectric. The Ohmic losses that are inherently present due to the coupling of SPPs to conductors' electron plasma, induce temperature gradients and fluid deformation driven by the thermocapillary effect, which lead to a nonlinear and nonlocal change of the effective dielectric constant. The latter extends beyond the regions of highest optical intensity and constitutes a novel thermally self-induced mechanism that affects the propagation of the SPPs. We derive the nonlinear and nonlocal Schrödinger equation that describes propagation of low intensity SPP beams, and show analytically and numerically that it supports a novel optical spatial soliton excitation.

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“…Due to the high boiling point of 1-butanol, i.e., 118 o C, water will evaporate more significantly (Oudshoorn et al, 2009). The relative evaporation is disadvantageous for butanol production given the fact that the maximum concentration of butanol in the aqueous phase is only ~ 70 g/L ( Barton and Haulait-Pirson, 1984;Sakashita et al, 2010;Bharathiraja et al, 2017) or 6 wt.% (Cheng and Park, 2017). Furthermore, the biological process cannot tolerate high butanol concentrations.…”

Section: Introductionmentioning

confidence: 99%

“…surface adsorption of alkanols is well-known(Posner et al, 1952;Gliński et al, 1998;Strey et al, 1999; Habrdova et al, 2004;Le et al, 2012) and their surface tensions are shown inFigure 2. For 1-butanol, it has been verified that the surface tension of its aqueous solution can be reduced to 25 mN/m at the solubility of 6 wt.%(Cheng and Park, 2017). Hence, it is expected that alkanols are strongly adsorbed at the air/water surface(Lee et al, 2016) and have selective evaporation(Walz et al, 2015), even at low concentration conditions of fermentative broth.…”

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confidence: 99%

Selective evaporation of a butanol/water droplet by microwave irradiation, a step toward economizing biobutanol production

et al. 2020

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Selective evaporation of a butanol/water droplet by microwave irradiation, a strategy to economize biobutanol production.Journal homepage: www.biofueljournal.com HIGHLIGHTS ➢Surface and evaporation of alcohol/water was studied in-situ in response to microwave irradiation. ➢Butanol content in liquid phase was reduced by approx. 90%. ➢Similar trend was observed with pentanol/water droplet. ➢The method could be applied to improve efficiency of fermentative butanol separation. GRAPHICAL ABSTRACT ARTICLE INFO ABSTRACT Article history:The separation step is a constraint in biobutanol production, due to high energy consumption of the current techniques. This study explores a new separation method via applying microwave irradiation. Butanol/water droplet was monitored during exposure to microwave irradiation at different power rates. The surface tension, droplet volume, and temperature were scrutinized during and after exposure to microwave irradiation. The data obtained indicated that the microwave-induced evaporation rates of alcohols were much higher than that of water. Consequently, the vaporized phase contained a much higher alcohol content than the liquid phase. In particular, butanol concentration in the aqueous phase could be reduced to ~ 0.1 wt.%, which was more effective than the theoretical limit via the boiling process. The method is an attractive option to complement the fermentation process, which produces a low butanol concentration solution. This development could potentially lead to a more efficient pathway for biobutanol production. Selective evaporation of a butanol/water droplet by microwave irradiation, a strategy to economize biobutanol production.

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Surface tension of dilute alcohol-aqueous binary fluids: n-Butanol/water, n-Pentanol/water, and n-Hexanol/water solutions

Cited by 28 publications

References 13 publications

Effects of Tube Radius and Surface Tension on Capillary Rise Dynamics of Water/Butanol Mixtures

Effects of Tube Radius and Surface Tension on Capillary Rise Dynamics of Water/Butanol Mixtures

Nonlocal and Nonlinear Surface Plasmon Polaritons and Optical Spatial Solitons Induced by the Thermocapillary Effect

Selective evaporation of a butanol/water droplet by microwave irradiation, a step toward economizing biobutanol production

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