Membrane contactors: An alternative for de-aeration of salt solutions?

Kattan, Olga; Ebbers, Koen; Koolaard, André M.; Vos, H.J.; Bargeman, Gerrald

doi:10.1016/j.seppur.2018.05.038

Cited by 12 publications

(8 citation statements)

References 34 publications

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“…6 Of the physical separations, vacuum flash degassing (in which water vapor stripping gas is generated by a degree of superheat, ΔT sup , with respect to the boiling temperature) is attractive since it does not require the availability of nitrogen or external steam. Moreover, while membrane separations are attractive for the production of ultrapure water 7,8 and relatively large membrane areas can be accommodated for large scale processes, 5,8 it may suffer from fouling in process streams containing particles, organics, 9 or salts. 10 In case of vacuum flash degassing, mass-transfer from the liquid to the gas phase is determined by the initial liquid flash (which determines the dispersed liquid distribution and generates the gas−liquid interface) and the subsequent residence time available.…”

Section: Introductionmentioning

confidence: 99%

“…Removal of dissolved gases from liquid process streams is frequently required in a wide range of industries, notably the removal of oxygen, for example, to minimize corrosion in chemical production plants, oil fields, and power stations , and to increase product quality and shelf life in the dairy and beverage industry . Removal of oxygen is either realized by physical means (e.g., nitrogen or steam stripping and vacuum degassing in packed columns, or separation in a membrane contactor) or by chemical means (e.g., addition of hydrazine or sodium sulphite) . Chemical removal of oxygen clearly has the disadvantage of adding an impurity, with additional health concerns (in case of hydrazine) or solids removal requirements (in case of sulphite) .…”

Section: Introductionmentioning

confidence: 99%

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Intensified and Flexible Flash Degassing in a Rotating Packed Bed

Beer

Koolaard

Vos

et al. 2018

Ind. Eng. Chem. Res.

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Application of flash degassing in a rotating packed bed (RPB) has been experimentally studied using oxygen removal from water as a test system. It is shown that the process can be well described by two mass transfer steps in series: an initial flash and subsequent gas–liquid mass transfer in the rotating bed. Outlet oxygen concentrations close to the flash equilibrium concentration were obtained at high angular speeds, without requiring a large degree of superheat. The rotation of the bed enhances the gas–liquid mass transfer in the packing, up to a factor 10 by increasing the angular speed from 0 to 400 rad s–1. This leads to a reduction in the required packed bed volume and possibly to an energetically more efficient operation of degassing processes. Moreover, the angular speed yields an extra degree of freedom during operating, enabling fast-responding operation at a constant outlet concentration with varying inlet conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Intensified and Flexible Flash Degassing in a Rotating Packed Bed

Beer

Koolaard

Vos

et al. 2018

Ind. Eng. Chem. Res.

Self Cite

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“…Apart from that, recent engineering approaches to structural steric effect [ 606 ] and blending [ 594 , 607 ] of amine absorbents have been reported. Other applications of membrane contactors include oxygenation/deoxygenation [ 608 , 609 ], ozonation [ 610 , 611 , 612 ], gas dehumidification [ 613 , 614 , 615 , 616 , 617 ], and olefin/paraffin separation [ 618 , 619 ].…”

Section: Applications Of Hollow Fiber Membranesmentioning

confidence: 99%

State-of-the-Art Organic- and Inorganic-Based Hollow Fiber Membranes in Liquid and Gas Applications: Looking Back and Beyond

Lau

Soh

et al. 2022

Membranes

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The aggravation of environmental problems such as water scarcity and air pollution has called upon the need for a sustainable solution globally. Membrane technology, owing to its simplicity, sustainability, and cost-effectiveness, has emerged as one of the favorable technologies for water and air purification. Among all of the membrane configurations, hollow fiber membranes hold promise due to their outstanding packing density and ease of module assembly. Herein, this review systematically outlines the fundamentals of hollow fiber membranes, which comprise the structural analyses and phase inversion mechanism. Furthermore, illustrations of the latest advances in the fabrication of organic, inorganic, and composite hollow fiber membranes are presented. Key findings on the utilization of hollow fiber membranes in microfiltration (MF), nanofiltration (NF), reverse osmosis (RO), forward osmosis (FO), pervaporation, gas and vapor separation, membrane distillation, and membrane contactor are also reported. Moreover, the applications in nuclear waste treatment and biomedical fields such as hemodialysis and drug delivery are emphasized. Subsequently, the emerging R&D areas, precisely on green fabrication and modification techniques as well as sustainable materials for hollow fiber membranes, are highlighted. Last but not least, this review offers invigorating perspectives on the future directions for the design of next-generation hollow fiber membranes for various applications. As such, the comprehensive and critical insights gained in this review are anticipated to provide a new research doorway to stimulate the future development and optimization of hollow fiber membranes.

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“…PP hollow fiber hydrophobic membranes, typically used as membrane contactors to deoxygenate water in vacuum deaerators [52] can be applied to remove hydrogen sulfide (H 2 S) from sour water from the oil and gas industry. As such, the GWSC team investigated H 2 S removal from sour water collected from Qatari gas field using hydrophobic membrane contactors (Fig.…”

Section: H 2 S Removalmentioning

confidence: 99%

Membrane distillation: recent technological developments and advancements in membrane materials

et al. 2021

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Membrane distillation (MD) is a novel desalination technology that has potential to produce distilled quality water from high salinity brine streams. The driving force for MD is the vapor pressure difference across a hydrophobic membrane resulting in transfer of water vapor from hot to cold side. This vapor contacts a cold surface and condenses to produce distillate. This paper reviews recent and/or multi-year research programs that focused on MD pilot or field testing. The various investigations concluded that while MD can produce distilled water quality, the energy efficiency remains the key bottleneck for future deployment of MD. Membrane wetting and fouling also presents key challenges for desalination due to both the high salinity and the presence of organics in the feed water. The authors contacted several MD vendors requesting updates on their latest products and technology developments. MD vendors with innovative module designs, some of which promise a step change in performance, have recently emerged on the market. In addition to water desalination, MD has a wide range of industrial applications such as hydrogen sulfide removal, the treatment of wastewater from the pharmaceutical, metal finishing industries, direct sewer mining, oily wastewater, and water recovery from flue gas. This paper also reviews novel membrane chemistries with emphasis on membranes prepared by phase inversion and electrospinning techniques to which nanomaterials have been added. The primary objectives in adding various nanomaterials (e.g., carbon nanotubes, graphene, silicon dioxide, fluorinated compounds) are to increase hydrophobicity (to reduce wetting) and increase mass transfer rates (to increase flux and lower cost).

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Membrane contactors: An alternative for de-aeration of salt solutions?

Cited by 12 publications

References 34 publications

Intensified and Flexible Flash Degassing in a Rotating Packed Bed

Intensified and Flexible Flash Degassing in a Rotating Packed Bed

State-of-the-Art Organic- and Inorganic-Based Hollow Fiber Membranes in Liquid and Gas Applications: Looking Back and Beyond

Membrane distillation: recent technological developments and advancements in membrane materials

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