Hollow fiber dead-end ultrafiltration: Axial transport variations during humic acid filtration

Ven, W.J.C. van de; Sant, K. van 't; Punt, Ineke G.M.; Zwijnenburg, A.; Kemperman, A.J.B.; Meer, W.G.J. van der; Weßling, Matthias

doi:10.1016/j.memsci.2008.01.035

Cited by 12 publications

(8 citation statements)

References 32 publications

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“…Similar observations for dead-end filtration, where an initially high rejection reduces with filtration time, were reported by van de Ven et. al [39].…”

Section: Influence Of the Feed Phmentioning

confidence: 98%

Towards controlled fouling and rejection in dead-end microfiltration of nanoparticles – Role of electrostatic interactions

Trzaskuś

Vos

Kemperman

et al. 2015

Journal of Membrane Science

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“…Similar observations for dead-end filtration, where an initially high rejection reduces with filtration time, were reported by van de Ven et. al [39].…”

Section: Influence Of the Feed Phmentioning

confidence: 98%

Towards controlled fouling and rejection in dead-end microfiltration of nanoparticles – Role of electrostatic interactions

Trzaskuś

Vos

Kemperman

et al. 2015

Journal of Membrane Science

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“…Due to the low axial flow over the length of the fiber (which declines over the length of the fiber), the material is transported to the end. We presented this mechanism and showed visual evidence for the local deposition of humic material in our previous work [14]. We showed in that work that the retention in the early part of the module for humic acid can be as high as 95% which is far greater than would be expected based on the pore size (25 nm) and the molar mass of the humic material.…”

Section: Sodium Alginate and Humic Acidmentioning

confidence: 51%

“…For the fluxes of 30 and higher, the relation between resistance flux has been extensively described in our work on the filtration of alginate in different ionic environments [20]. For humic acid solutions, the resistance decreases with increasing flux until a plateau is reached, which we showed to be due to a decrease in retention with increasing filtered volume [14]. Fig.…”

Section: Sodium Alginate and Humic Acidmentioning

confidence: 55%

“…Similar work was performed by Chellam and Wiesner [13], who predicted particle trajectories in crossflow filtration. In our own work, we showed that humic matter, consisting of Brownian matter, deposits primarily at the end of the module [14]. The driving force for this is a combination of the small crossflow velocity and charge interactions.…”

Section: Introductionmentioning

confidence: 87%

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Hollow fiber ultrafiltration: The concept of partial backwashing

Ven

Punt

Zwijnenburg³

et al. 2008

Journal of Membrane Science

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“…PES has been successfully used in making asymmetric UF membranes with different pore morphologies (26)(27)(28). However, pure PES membranes possessed hydrophobic surface and high fouling nature, which ultimately caused low fluxes with their usage (29). To overcome this limitation, the PES membrane is blended with hydrophilic and inorganic additives to modify the surface and structure of the membrane, which improved the flux (12,15,(30)(31)(32)(33)(34)(35)(36).…”

Section: Introductionmentioning

confidence: 99%

Polyethylene glycol and iron oxide nanoparticles blended polyethersulfone ultrafiltration membrane for enhanced performance in dye removal studies

Krishnamoorthy

Velu

2015

E-Polymers

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Ultrafiltration (UF) is one of the most widely used membrane technologies for the effective separation of macromolecules in feed solutions. However, despite good separation efficiency, the UF membranes made up of pure polymers suffer to a greater extent because of low flux problem, which affects the process time and load. To handle this limitation, the base polymer is blended with a suitable additive to modify the structural and surface morphology of the membrane to provide better fluxes. In this current study, a series of polyethersulfone (PES) UF asymmetric membranes blended with polyethylene glycol and iron oxide nanoparticles was prepared using the phase inversion technique. Prepared membranes were analyzed for their morphology, thermal stability, and membrane characterization. Morphology studies using scanning electron microscopy and atomic force microscopy confirmed the increase in the number of pores, pore size in support layer, and surface roughness in the blended membranes, ensuring the chances of enhanced flux. Surface hydrophilicity was increased with the increase in the iron oxide concentration in the composite membranes. Thermal analysis studies showed the better thermal stability of the blended membranes. Pure water flux of the prepared composite membranes was improved to a maximum of four times in comparison with pure PES membrane. Dye rejection studies clearly showed that the blended membranes almost had the same rejection as that of pure PES membrane. Thus, the prepared PES composite UF membrane is a promising candidate for the treatment of dyepolluted wastewater, ensuring high fluxes and effective rejection.

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Hollow fiber dead-end ultrafiltration: Axial transport variations during humic acid filtration

Cited by 12 publications

References 32 publications

Towards controlled fouling and rejection in dead-end microfiltration of nanoparticles – Role of electrostatic interactions

Towards controlled fouling and rejection in dead-end microfiltration of nanoparticles – Role of electrostatic interactions

Hollow fiber ultrafiltration: The concept of partial backwashing

Polyethylene glycol and iron oxide nanoparticles blended polyethersulfone ultrafiltration membrane for enhanced performance in dye removal studies

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