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Sustainable Living Filtration Membranes.


ABSTRACT: As demand for clean water increases, there is a growing need for effective sustainable water treatment systems. We used the symbiotic culture of bacteria and yeast (SCOBY) that forms while brewing kombucha tea as a living water filtration membrane (LFM). The LFMs function as ultrafiltration membranes with a permeability of 135 ± 25 L m-2 h-1 bar-1 and a 90% rejection of 30 nm nanoparticles. Because they contain living microorganisms that produce cellulose fibers, the surface of an LFM heals after a puncture or incision. Following punctures or incisions, membrane permeability, after a rapid increase postpuncture, returns to 110-250% of the original flux after 10 days in a growth solution. Additionally, LFMs may be manufactured using readily available materials, increasing membrane production accessibility.

SUBMITTER: Eggensperger CG 

PROVIDER: S-EPMC7066645 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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Sustainable Living Filtration Membranes.

Eggensperger Christina G CG   Giagnorio Mattia M   Holland Marcus C MC   Dobosz Kerianne M KM   Schiffman Jessica D JD   Tiraferri Alberto A   Zodrow Katherine R KR  

Environmental science & technology letters 20200213 3


As demand for clean water increases, there is a growing need for effective sustainable water treatment systems. We used the symbiotic culture of bacteria and yeast (SCOBY) that forms while brewing kombucha tea as a living water filtration membrane (LFM). The LFMs function as ultrafiltration membranes with a permeability of 135 ± 25 L m<sup>-2</sup> h<sup>-1</sup> bar<sup>-1</sup> and a 90% rejection of 30 nm nanoparticles. Because they contain living microorganisms that produce cellulose fibers,  ...[more]

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