Journal
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
Volume 7, Issue 3, Pages 213-218Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.estlett.0c00019
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Funding
- Montana Tech Seed Grant
- National Science Foundation [1828523]
- Combat Capabilities Development Command Army Research Laboratory [W911NF-15-2-0020]
- UMass as part of the Biotechnology Training Program (NIH, National Research Service Award) [T32 GM108556]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1828523] Funding Source: National Science Foundation
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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.
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