Development of a fluid dynamic gauging method for the characterization of fouling behavior during cross-flow filtration of a wood extraction liquor

Arandia, Kenneth; Balyan, Upasna; Mattsson, Tuve

doi:10.1016/j.fbp.2021.04.009

Cited by 5 publications

(3 citation statements)

References 44 publications

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“…It is an extremely complex mixture. About seven tons of black liquor at 15% solids (about 10% organic chemicals and 5% inorganic chemicals with a total heat content of 13.5–14.5 MJ/kg solid is produced per ton of pulp) [ 31 , 32 , 33 ]. In other words, the initial solid content in paper-making black liquor is about 15%.…”

Section: Simulation Results and Analysismentioning

confidence: 99%

Study on Experiment and Simulation of Shear Force on Membrane with Dynamic Cross-Flow for Lignin in Black Liquor

Zhao

Wang

2023

Polymers

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To address the problem of lignin membrane fouling caused by dynamic cross-flow in the process of retaining and concentrating the black liquor byproduct of papermaking, this paper uses three different rotating structures (vane, disk and propeller) to increase the surface shear force and filtration flux of the membrane. In this paper, under different rotating speeds and different transmembrane pressure differences, numerical simulations were conducted on the shear forces generated by the three structures and the retention process on the surface of the membrane. The variation laws were also studied and compared. Under the same filtration conditions, the vane structure demonstrates better results than the propeller and disk structures in terms of increasing filtration flux. Based on the result, the vane shear force was simulated in terms of changing the particle deposition, and compared with vane rotating speeds of 100–700 r/min, the surface particle deposition of the membrane was significantly reduced at a rotating speed of 800 r/min. Finally, the numerical simulation results were experimentally validated to ensure the accuracy of the simulation. The findings provide a theoretical basis and practical value for solving the problem of lignin membrane fouling caused by dynamic cross-flow in the process of retaining and concentrating the black liquor byproduct of papermaking.

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Section: Simulation Results and Analysismentioning

confidence: 99%

Study on Experiment and Simulation of Shear Force on Membrane with Dynamic Cross-Flow for Lignin in Black Liquor

Zhao

Wang

2023

Polymers

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“…It comprised the following components: a flow cell with dimensions of 150 mm × 16 mm × 15 mm (L × W× H), an FDG probe positioned at the center of the flow channel, a precision balance for permeate collection, a baffled feed tank and a gear pump for circulating the feed suspensions, a deionized water tank, a gear pump and a Coriolis flowmeter for gauging flow control, two pressure transducers for dp and TMP measurements, two pressure fluctuation dampeners, a needle valve (V3) for TMP regulation, and six ball valves, two of which were bleed valves. Detailed technical specifications of each component can be found elsewhere [27]. Key elements of the test rig were linked to a data logger and control system and their output data monitored via LabVIEW TM 2020 (National Instruments, Austin, TX, USA).…”

Section: Cross-flow Filtration Equipmentmentioning

confidence: 99%

Monitoring Membrane Fouling Using Fluid Dynamic Gauging: Influence of Feed Characteristics and Operating Conditions

Arandia,

Karna,

Mattsson

et al. 2023

Membranes

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Recent studies on membrane fouling have made considerable progress in reducing its adverse effects. However, a lack of comprehensive studies focusing on the underlying fouling mechanisms remains. This work aims to address a part of this gap by investigating the influence of feed suspension chemistry and operating conditions on the fouling characteristics of microcrystalline cellulose. Fluid dynamic gauging (FDG) was employed to monitor the properties of fouling layers under varied conditions. FDG results revealed that the cohesive strength of fouling layers increased in the direction towards the membrane, which can be associated with the higher compressive pressures exerted on foulants deposited near the surface. At lower pHs and higher ionic strengths, reduced electrostatic repulsions between particles likely resulted in particle agglomeration, leading to the formation of thicker cakes. In addition, thicker cake layers were also observed at higher feed concentrations, higher operating transmembrane pressures, and longer filtration times. The cross-flow velocity influenced the resilience of fouling layers significantly, resulting in thinner yet stronger cake layers in the transition and turbulent flow regimes. These findings regarding the influence of feed characteristics and operating conditions on the fouling behavior can be beneficial in developing effective antifouling strategies in membrane separation processes.

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“…The test rig was operated in a feedand-bleed configuration whereby the retentate is recycled back to the inlet of the feed tank. The technical specifications of each component are described in detail in previous studies [36,45]. The PES membrane was mounted at the bottom of the cross-flow channel of the flow cell after being soaked in deionized water at least half an hour prior to MF.…”

Section: Cross-flow Filtration Rigmentioning

confidence: 99%

Fouling Characteristics of Microcrystalline Cellulose Duringcross-Flow Microfiltration: Insights from Fluid Dynamicgauging and Molecular Dynamics Simulations

Arandia¹,

Karna²,

Mattsson³

et al. 2022

SSRN Journal

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Development of a fluid dynamic gauging method for the characterization of fouling behavior during cross-flow filtration of a wood extraction liquor

Cited by 5 publications

References 44 publications

Study on Experiment and Simulation of Shear Force on Membrane with Dynamic Cross-Flow for Lignin in Black Liquor

Study on Experiment and Simulation of Shear Force on Membrane with Dynamic Cross-Flow for Lignin in Black Liquor

Monitoring Membrane Fouling Using Fluid Dynamic Gauging: Influence of Feed Characteristics and Operating Conditions

Fouling Characteristics of Microcrystalline Cellulose Duringcross-Flow Microfiltration: Insights from Fluid Dynamicgauging and Molecular Dynamics Simulations

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