A Size‐Exclusion Nanocellulose Filter Paper for Virus Removal

Metreveli, Giorgi; Wågberg, Linus; Emmoth, Eva; Belák, Sándór; Strömme, Maria; Mihranyan, Albert

doi:10.1002/adhm.201300641

Cited by 195 publications

(142 citation statements)

References 34 publications

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“…It is clear that the major drawback of membranes produced by the Nano paper approach is their low presence (flux). Metreveli et al showed that cladophora nanocellulose-based filter paper can act as a size-exclusion membrane for the removal of relatively large viruses, with sizes >50 nm [91]. …”

Section: Nanocellulose-based Water Purification Membranes and Filtersmentioning

confidence: 99%

Nanocellulose-Based Materials for Water Purification

et al. 2017

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Nanocellulose is a renewable material that combines a high surface area with high strength, chemical inertness, and versatile surface chemistry. In this review, we will briefly describe how nanocellulose is produced, and present—in particular, how nanocellulose and its surface modified versions affects the adsorption behavior of important water pollutants, e.g., heavy metal species, dyes, microbes, and organic molecules. The processing of nanocellulose-based membranes and filters for water purification will be described in detail, and the uptake capacity, selectivity, and removal efficiency will also be discussed. The processing and performance of nanocellulose-based membranes, which combine a high removal efficiency with anti-fouling properties, will be highlighted.

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Section: Nanocellulose-based Water Purification Membranes and Filtersmentioning

confidence: 99%

Nanocellulose-Based Materials for Water Purification

et al. 2017

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“…Our group has made research efforts towards finding useful applications of Cladophora nanocellulose 2015;Metreveli et al 2014;Nyholm et al 2011;Razaq et al 2012). The use of Cladophora nanocellulose is well in line with the concept of sustainable industrial scale processing, as the source of this cellulose is abundant and, in addition, Cladophora algae are typically considered undesirable pollutants, known for forming large, foulsmelling, algal mats and having adverse effects on the aquatic ecosystem as well as harbouring bacterial pathogens (Mihranyan 2011).…”

Section: Introductionmentioning

confidence: 99%

A green and simple method for preparation of an efficient palladium adsorbent based on cysteine functionalized 2,3-dialdehyde cellulose

2016

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A green and efficient adsorbent for adsorption of palladium ions was prepared from 2,3-dialdehyde cellulose (DAC) originating from nanocellulose from the green algae Cladophora. The DAC was functionalized with cysteine via reductive amination in a convenient one-pot procedure to provide the adsorbent. The adsorption properties for adsorbing palladium(II) ions, including capacity, adsorption isotherm and kinetics, were studied. The successful reductive amination of cysteine with 2,3-dialdehyde cellulose was confirmed by FT-IR, elemental analysis and XPS. The adsorbent was characterized by SEM, XRD, gas adsorption and TGA. The adsorbent had a high adsorption capacity (130 mg palladium per gram adsorbent) and enabled fast adsorption of palladium(II) ions from solution (80 % of maximum capacity reached in 2 h). Adsorbent materials suitable for both filters (fibrous) and column matrixes (spherical particles) could be obtained in an efficient manner by controlling the degree of oxidation while producing the DAC material.

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“…The term nanocellulose fibers usually refers to fibers within a general size range of 10 nm to 1000 nm, basically consisting of nanocrystalline cellulose, nanofibrillated cellulose, and bacterial cellulose. Due to its excellent properties, such as thermal stability, environmental benefits, optical transparency, and hydroxyl groups on the surfaces, nanocellulose fibers have become a precursor in a variety of new functional biomaterials, including transparent films , aerogels (Chen et al 2014), reinforcing agents (Tibolla et al 2014), and separation membranes (Metreveli et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Nanocellulose Fibers from NaOH/Urea Pretreatment of Oil Palm Fibers

Luo¹,

Wang²

2017

BioResources

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A facile method is reported to prepare nanocellulose fibers from oil palm trunk fibers. The fibers were pretreated 2 hours with NaOH/urea solution, and the fully swelled fibers were mechanically treated through highpressure homogenization to obtain nanocellulose. The nanocellulose fibers were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). FTIR results revealed that there was no obvious difference between the spectra of the bleached fibers (BF), pretreated cellulose fibers (PCF), and cellulose nanofibers (NCF), which indicated that the pretreatment process is a non-derivative reaction. The crystallinity of PCF and NCF decreased and contained the cellulose I crystal structure. The PCF presented both a distorted structure and a coarser surface. The resulting NCF were approximately 10 nm to 100 nm in diameter with the length varying from hundreds of nanometers to several micrometers, as observed by SEM. The thermal degradation of NCF was 223 °C with about 20% weight loss, and the maximum degradation temperature was 338 °C. NaOH/urea showed potential as a mild solvent for preparing nanocellulose fibers.

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A Size‐Exclusion Nanocellulose Filter Paper for Virus Removal

Cited by 195 publications

References 34 publications

Nanocellulose-Based Materials for Water Purification

Nanocellulose-Based Materials for Water Purification

A green and simple method for preparation of an efficient palladium adsorbent based on cysteine functionalized 2,3-dialdehyde cellulose

Preparation and Characterization of Nanocellulose Fibers from NaOH/Urea Pretreatment of Oil Palm Fibers

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