A size-exclusion nanocellulose filter paper for virus removal.

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Abstract

This is the first time a 100% natural, unmodified nanofibrous polymer-based membrane is demonstrated capable of removing viruses solely based on the size-exclusion principle, with a log10 reduction value (LRV) ≥ 6.3 as limited by the assay lower detection limit and the feed virus titre, thereby matching the performance of industrial synthetic polymer virus removal filters.

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Most cited references 29

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Beitrag zur kollektiven Behandlung pharmakologischer Reihenversuche

G. Kärber (1931)

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Ultrafast All-Polymer Paper-Based Batteries

Gustav Nyström, Aamir Razaq, Maria Strømme … (2009)

Conducting polymers for battery applications have been subject to numerous investigations during the last two decades. However, the functional charging rates and the cycling stabilities have so far been found to be insufficient for practical applications. These shortcomings can, at least partially, be explained by the fact that thick layers of the conducting polymers have been used to obtain sufficient capacities of the batteries. In the present letter, we introduce a novel nanostructured high-surface area electrode material for energy storage applications composed of cellulose fibers of algal origin individually coated with a 50 nm thin layer of polypyrrole. Our results show the hitherto highest reported charge capacities and charging rates for an all polymer paper-based battery. The composite conductive paper material is shown to have a specific surface area of 80 m2 g−1 and batteries based on this material can be charged with currents as high as 600 mA cm−2 with only 6% loss in capacity over 100 subsequent charge and discharge cycles. The aqueous-based batteries, which are entirely based on cellulose and polypyrrole and exhibit charge capacities between 25 and 33 mAh g−1 or 38−50 mAh g−1 per weight of the active material, open up new possibilities for the production of environmentally friendly, cost efficient, up-scalable and lightweight energy storage systems.

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Avian influenza virus in water: infectivity is dependent on pH, salinity and temperature.

Justin D. Brown, Ginger Goekjian, Rebecca Poulson … (2009)

Wild birds in the Orders Anseriformes and Charadriiformes are the natural reservoir for avian influenza (AI) viruses. Transmission within these aquatic bird populations occurs through an indirect fecal-oral route involving contaminated water on shared aquatic habitats. In order to better understand the influence that aquatic environments exert on AI transmission and maintenance in the wild-bird reservoir system, we determined the duration of persistence for 12 wild-bird origin AI viruses under natural ranges of pH, salinity, and temperature. Viral persistence was measured using a laboratory-based distilled water model system. The AI viruses varied in their response to each of the examined variables, but, generally, the viruses were most stable at a slightly basic pH (7.4-8.2), low temperatures ( 32 degrees C), and high salinity (>25,000 ppm). The results of this research suggest that the pH, temperature, and salinity in natural aquatic habitats can influence the ability of AI viruses to remain infective within these environments. Furthermore, these results provide insight into chemical and physical properties of water that could enhance or restrict AI virus transmission on an aquatic bird habitat.

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Author and article information

Journal

Journal ID (iso-abbrev): Adv Healthc Mater

Title: Advanced healthcare materials

Publisher: Wiley-Blackwell

ISSN (Electronic): 2192-2659

ISSN (Print): 2192-2640

Publication date (Electronic): Oct 2014

Volume: 3

Issue: 10

Affiliations

[1 ] Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Box 7036, 750 07, Uppsala, Sweden.

Article

DOI: 10.1002/adhm.201300641

PubMed ID: 24687994

SO-VID: e71c2055-dcc9-4350-8332-8106242cc405

History

Keywords: Cladophora cellulose,influenza,nanocellulose,size-exclusion filtration,virus filtration

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Keywords: Cladophora cellulose, influenza, nanocellulose, size-exclusion filtration, virus filtration

A size-exclusion nanocellulose filter paper for virus removal.

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Abstract

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Zika Virus

Most cited references 29

Beitrag zur kollektiven Behandlung pharmakologischer Reihenversuche

Ultrafast All-Polymer Paper-Based Batteries

Avian influenza virus in water: infectivity is dependent on pH, salinity and temperature.

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