Integrity breaches in a hollow fiber nanofilter – Effects on natural organic matter and virus-like particle removal

Lidén, Angelica; Lavonen, Elin; Persson, Kenneth M; Larson, Magnus

doi:10.1016/j.watres.2016.08.056

Cited by 24 publications

(33 citation statements)

References 36 publications

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“…In comparison to SW NF membranes, the operating pressures of the commercial HF NF membranes are substantially lower. This stems typically from a specific operational expenditure perspective [2,21], but also, at high operating pressures the fiber integrity is at risk, which can be detrimental to the filtration efficacy [22]. The lower operating pressures can result in a reduced specific energy consumption during operation as compared to SW NF and RO membranes.…”

Section: Introductionmentioning

confidence: 99%

Advances and Applications of Hollow Fiber Nanofiltration Membranes: A Review

Sewerin¹,

Elshof²,

Matencio

et al. 2021

Membranes

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Hollow fiber nanofiltration (NF) membranes have gained increased attention in recent years, partly driven by the availability of alternatives to polyamide-based dense separation layers. Moreover, the global market for NF has been growing steadily in recent years and is expected to grow even faster. Compared to the traditional spiral-wound configuration, the hollow fiber geometry provides advantages such as low fouling tendencies and effective hydraulic cleaning possibilities. The alternatives to polyamide layers are typically chemically more stable and thus allow operation and cleaning at more extreme conditions. Therefore, these new NF membranes are of interest for use in a variety of applications. In this review, we provide an overview of the applications and emerging opportunities for these membranes. Next to municipal wastewater and drinking water processes, we have put special focus on industrial applications where hollow fiber NF membranes are employed under more strenuous conditions or used to recover specific resources or solutes.

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Section: Introductionmentioning

confidence: 99%

Advances and Applications of Hollow Fiber Nanofiltration Membranes: A Review

Sewerin¹,

Elshof²,

Matencio

et al. 2021

Membranes

View full text Add to dashboard Cite

show abstract

“…The lower TOC rejection in tests with synthetic water rejection is attributed to the presence of divalent ions that reduce the rejection of the HA molecules. The reason for this decrease is that the membrane charge is shielded and the Donnan exclusion effect is reduced, while the steric effect becomes dominant . TOC and UV 254 are both surrogates' measures of the organic matter in water; however, large aromatic compounds have UV 254 absorbance.…”

Section: Resultsmentioning

confidence: 99%

Nanocomposite hollow fiber nanofiltration membranes: Fabrication, characterization, and pilot‐scale evaluation for surface water treatment

Urper-Bayram

Sayinli

Şengür-Taşdemir

et al. 2019

J of Applied Polymer Sci

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Thin-film nanocomposite (TFN) membranes were fabricated by interfacial polymerization of a polyamide (PA) layer on the shell side of hollow fiber membrane supports. TiO 2 nanoparticle loadings in the thin-film layer were 0.01, 0.05, and 0.20 wt %. Nanoparticle-free PA thin-film composite (TFC) membranes served as the comparative basis. The TFN membranes were characterized in terms of the chemical composition, structure, and surface properties of the separation layer. Incorporating nanoTiO 2 improved membrane permeability up to 12.6-fold. During preliminary laboratory-scale evaluation, TFN membranes showed lower salt rejection but higher TOC rejection in comparisons with the corresponding values for TFC controls. Based on the performance in lab-scale tests, TFN membranes with 0.01 wt % nanoTiO 2 loading were selected for an evaluation at the pilot scale with synthetic surface water as the feed. While the permeate flux during long-term pilot-scale operation gradually decreased for TFC membranes, TFN membranes had a higher initial permeate flux that gradually increased with time. The TOC rejection by TFN and TFC membranes was comparable. We conclude that TFN membranes show promise for full-scale surface water treatment applications.

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“…NF membrane selectively separates small organic molecules and multivalent ions through steric hindrance and the Donna effect, respectively. It segregates them with a molecular weight cut-off (MWCO) between the range of 200 and 1000 Da [ 227 ] and consumes low operating pressure, thus requiring lesser energy as compared to RO [ 228 , 229 , 230 ].…”

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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Integrity breaches in a hollow fiber nanofilter – Effects on natural organic matter and virus-like particle removal

Cited by 24 publications

References 36 publications

Advances and Applications of Hollow Fiber Nanofiltration Membranes: A Review

Advances and Applications of Hollow Fiber Nanofiltration Membranes: A Review

Nanocomposite hollow fiber nanofiltration membranes: Fabrication, characterization, and pilot‐scale evaluation for surface water treatment

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

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