High Virus Retention Mediated by Zirconia Microtubes with Tailored Porosity

Kroll, Stephen; Moura, Marcela Oliveira Caldeira de; Meder, Fabian; Rezwan, Kurosch

doi:10.1016/j.proeng.2012.08.368

Cited by 8 publications

(10 citation statements)

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“…Different filtration materials have been described for the use in water purification, such as polymeric materials like cellulose acetate (CA) [5], polysulfone (PS) [6], polyacrylonitrile (PAN) [7] or polyvinylidene fluoride (PVDF) [8], while polyethersulfone (PES) is the most commonly used material for membrane applications [9]. In contrast to polymeric filter materials, ceramics feature outstanding positive properties because they are usually bio-inert, do not undergo swelling, are chemically and thermally stable, and withstand high mechanical stress enabling the cleaning and reuse of the filter after heat or acid/base treatment for decontamination [10,11]. These excellent properties result in an increased membrane service life compensating the higher costs of ceramics in comparison to polymeric materials.…”

Section: Introductionmentioning

confidence: 99%

Silver nanoparticle-doped zirconia capillaries for enhanced bacterial filtration

Wehling

Köser

Lindner

et al. 2015

Materials Science and Engineering: C

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Section: Introductionmentioning

confidence: 99%

Silver nanoparticle-doped zirconia capillaries for enhanced bacterial filtration

Wehling

Köser

Lindner

et al. 2015

Materials Science and Engineering: C

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“…9 The extruder was equipped with an extrusion die of 3.7 mm diameter and an integrated pin with a diameter of 1.9 mm. To fabricate tubular membranes in form of capillaries an extrusion process was used.…”

Section: Methodsmentioning

confidence: 99%

“…The schematically extruder setup and the extruding process conditions are shown in our previous studies. 9 The extruder was equipped with an extrusion die of 3.7 mm diameter and an integrated pin with a diameter of 1.9 mm. The extruder tip was heated up to 40°C to accelerate the solving of calcium iodate.…”

Section: (4) Shaping By Extrusionmentioning

confidence: 99%

Gel Casting of Free‐Shapeable Ceramic Membranes with Adjustable Pore Size for Ultra‐ and Microfiltration

et al. 2014

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The growing demand of reliable high‐performance membrane materials for separation processes requires new simple, straightforward, environmental friendly, sustainable approaches for membrane fabrication. In this study, we present an environmentally friendly gel‐casting, one‐pot process based on ionotropic‐gelation for obtaining alumina membranes. A slurry of alumina particles and the biopolymer alginate, which acts in combination with calcium iodate like a resin, was gelled in a controllable temperature dependent manner. Alumina membranes are obtained by three different shaping routes (extrusion, free‐forming, casting). The suitability of extruded capillaries in a polymer‐ceramic hybrid state (green body) and after sintering (1150°C for 2 h) for potential application in micro‐ and ultrafiltration is evaluated by monitoring the chemical and mechanical stability, permeability and separation behavior. Varying the initial alumina particle size from 200 to 900 nm, membranes with a narrow pore size distribution, predictable and tunable average pore diameters from 70 up to 480 nm and a constant open porosity of ~40%, are obtained. The permeability behavior is tested with fluorescence labeled submicron‐ and nano‐particles. Our novel colloidal processing route represents a very versatile tool for designing and manufacturing ceramic membranes with complex shapes for micro‐ (>0.1 μm) and ultrafiltration (0.1–0.01 μm).

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“…In the context of virus retention, ceramic membranes based on yttria-stabilized zirconia (YSZ) have recently shown their potential. [17][18][19] The ceramic capillaries were functionalized using different aminosilanes, which significantly increased the virus retention performance. These materials were found to be very promising for controlled virus retention.…”

Section: Introductionmentioning

confidence: 99%

Vibrational Spectroscopy as a Promising Toolbox for Analyzing Functionalized Ceramic Membranes

et al. 2018

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Ceramic materials find use in many fields including the life sciences and environmental engineering. For example, ceramic membranes have shown to be promising filters for water treatment and virus retention. The analysis of such materials, however, remains challenging. In the present study, the potential of three vibrational spectroscopic methods for characterizing functionalized ceramic membranes for water treatment is evaluated. For this purpose, Raman scattering, infrared (IR) absorption, and solvent infrared spectroscopy (SIRS) were employed. The data were analyzed with respect to spectral changes as well as using principal component analysis (PCA). The Raman spectra allow an unambiguous discrimination of the sample types. The IR spectra do not change systematically with functionalization state of the material. Solvent infrared spectroscopy allows a systematic distinction and enables studying the molecular interactions between the membrane surface and the solvent.

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High Virus Retention Mediated by Zirconia Microtubes with Tailored Porosity

Cited by 8 publications

References 0 publications

Silver nanoparticle-doped zirconia capillaries for enhanced bacterial filtration

Silver nanoparticle-doped zirconia capillaries for enhanced bacterial filtration

Gel Casting of Free‐Shapeable Ceramic Membranes with Adjustable Pore Size for Ultra‐ and Microfiltration

Vibrational Spectroscopy as a Promising Toolbox for Analyzing Functionalized Ceramic Membranes

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