Hollow fiber membrane degassing in ultrapure water and microbiocontamination

Bhaumik, D.; Majumdar, S.; Fan, Qiuxi; Sirkar, Kamalesh K.

doi:10.1016/j.memsci.2003.12.022

Cited by 45 publications

(28 citation statements)

References 9 publications

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“…Most of these applications are near atmospheric pressure and include water purification, blood oxygenation and artificial lung devices [11][12][13][14]. However some are operated at higher pressures such as beverage carbonation [15,16].…”

Section: Introductionmentioning

confidence: 99%

Recovery of [CO2]T from Aqueous Bicarbonate using a Gas Permeable Membrane

Willauer¹,

Hardy²,

Lewis³

et al. 2008

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Standard Form 298 (Rev. 8-98)Prescribed by ANSI Std. Z39.18Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS.

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Section: Introductionmentioning

confidence: 99%

Recovery of [CO2]T from Aqueous Bicarbonate using a Gas Permeable Membrane

Willauer¹,

Hardy²,

Lewis³

et al. 2008

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“…Since the membrane is hydrophobic, water does not fill the pores in normal conditions. However, other hollow fiber membranes are also used: hydrophobic porous hollow fibers from PE [43] and PVDF [90], PSF porous hollow fibers [39], hydrophobic dense membranes from silicon rubber [82], and composite membranes with a selective layer from perfluorodimethyldioxole-tetrafluoroethylene (PDD-TFE) on PP support [91].…”

Section: Membrane Oxygenation/deoxygenationmentioning

confidence: 99%

Gas-Liquid Hollow Fiber Membrane Contactors for Different Applications

Баженов

Bildyukevich

Volkov

2018

Fibers

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Gas-liquid membrane contactors that were based on hollow fiber membranes are the example of highly effective hybrid separation processes in the field of membrane technology. Membranes provide a fixed and well-determined interface for gas/liquid mass transfer without dispensing one phase into another while their structure (hollow fiber) offers very large surface area per apparatus volume resulted in the compactness and modularity of separation equipment. In many cases, stated benefits are complemented with high separation selectivity typical for absorption technology. Since hollow fiber membrane contactors are agreed to be one of the most perspective methods for CO2 capture technologies, the major reviews are devoted to research activities within this field. This review is focused on the research works carried out so far on the applications of membrane contactors for other gas-liquid separation tasks, such as water deoxygenation/ozonation, air humidity control, ethylene/ethane separation, etc. A wide range of materials, membranes, and liquid solvents for membrane contactor processes are considered. Special attention is given to current studies on the capture of acid gases (H2S, SO2) from different mixtures. The examples of pilot-scale and semi-industrial implementation of membrane contactors are given.

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“…According to their conclusions, the whole membrane area should be used as a mass transfer area, and the membrane porosity had no effect on mass transfer. And the whole membrane area was used as the mass transfer area in many other researches (15,24,25). On the contrary, Kim and Yang (11) deemed that the membrane porosity had a significant effect on the mass transfer performance, and the effective mass transfer area should be the pore area of the membrane.…”

Section: Effect Of Membrane Structural Characteristics On Mass Transfmentioning

confidence: 99%

Effect of Membrane Structural Characteristics on Mass Transfer in a Membrane Absorption Process

Zhang

Chen

Sun

et al. 2010

Separation Science and Technology

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Carbon dioxide is absorbed by de-ionized water or NaOH aqueous solution in the unsteady-state membrane absorption process. A theoretical model has been developed to describe the mass transfer behavior in the liquid phase, in which the effects of membrane structural characteristics are investigated. The concentration profiles in the liquid phase are calculated as a function of time. When the membrane porosity is relatively high or the pore size is relatively small, the solute concentration profile near the membrane surface can get homogeneous instantly due to the short distance between adjacent pores. In this case, the existence of the porous membrane has less effect on the mass transfer process. However, when the membrane porosity is relatively low or the pore size is relatively large, the distance between the adjacent pores is large, so the concentration profile near the membrane surface is hard to get homogeneous during the absorption process. Therefore, the concentration profile can be influenced significantly by the membrane structural characteristics, which means that the membrane structure has a significant effect on the mass transfer in liquid phase. Moreover, the chemical reaction in the liquid phase makes it difficult for the concentration profile near the membrane surface to get homogeneous. The disturbance in the liquid phase caused by the gas flow and pressure fluctuation is also taken into account in the model, and the model results agree well with the experimental data.

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Hollow fiber membrane degassing in ultrapure water and microbiocontamination

Cited by 45 publications

References 9 publications

Recovery of [CO2]T from Aqueous Bicarbonate using a Gas Permeable Membrane

Recovery of [CO2]T from Aqueous Bicarbonate using a Gas Permeable Membrane

Gas-Liquid Hollow Fiber Membrane Contactors for Different Applications

Effect of Membrane Structural Characteristics on Mass Transfer in a Membrane Absorption Process

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