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Re-use of waste cotton textile as an ultrafiltration membrane

Lopatina, Anastasiia; Anugwom, Ikenna; Blot, Hervé; Sánchez Conde, Ángela; Mänttäri, Mika; Kallioinen, Mari (2021-05-20)

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Lopatina, Anastasiia
Anugwom, Ikenna
Blot, Hervé
Sánchez Conde, Ángela
Mänttäri, Mika
Kallioinen, Mari
20.05.2021

Journal of Environmental Chemical Engineering

9

4

Elsevier

School of Engineering Science

https://doi.org/10.1016/j.jece.2021.105705
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2021090845576

Tiivistelmä

Textile industry produces millions of tons of waste annually, which is predominantly incinerated or landfilled. Cotton textile comprises a quarter of total textile production, and although being renewable, its production is highly chemical- and water-intensive, rising the need for effective waste cotton textile recycling. This study presents an investigation whether it is possible to utilize waste cotton textile as a cellulose source for the fabrication of cellulose membranes. The effect of casting thickness and cellulose concentration on the prepared membranes’ performance was studied. Membranes cast from 2 wt.% casting solutions exhibited the highest permeabilities of 1.11 and 3.09 m3/(m2·s·Pa) for 300- and 150-microns casting thickness, respectively, but poor adhesion stability and low retention. Membranes cast from solutions of higher concentrations (5, 6, and 7 wt.%) resulted in membranes with more stable performance. The permeability values for 300-microns membranes were in the range of 0.27 – 0.39 m3/(m2·s·Pa) and for 150-microns 0.51 – 0.67 m3/(m2·s·Pa). The retention values of these six membranes were relatively close to each other, showing 80 – 92% retention of polyethylene glycol (PEG) 35 kDa. Three most promising membranes (5, 6, and 7 wt.% cast at 150-microns) were additionally characterized, showing negative zeta potential within -23 – -35 mV range at pH 7 and contact angles of very hydrophilic material (14 – 16°). Overall, the results showed that very hydrophilic ultrafiltration membranes having attractive permeability and retention properties can be made from textile waste. 1 m2 of cotton bed linen is enough to produce approximately 20 m2 of cellulose membrane.

Lähdeviite

Anastasiia Lopatina, Ikenna Anugwom, Hervé Blot, Ángela Sánchez Conde, Mika Mänttäri, Mari Kallioinen, Re-use of waste cotton textile as an ultrafiltration membrane, Journal of Environmental Chemical Engineering, Volume 9, Issue 4, 2021, 105705, ISSN 2213-3437, https://doi.org/10.1016/j.jece.2021.105705.

Alkuperäinen verkko-osoite

https://www.sciencedirect.com/science/article/pii/S2213343721006825
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