Sustainable Living Filtration Membranes
Sustainable Living Filtration Membranes
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DOI：
10.1021/acs.estlett.0c00019
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发表时间：
2020-03-01
影响因子：
10.9
通讯作者：
Zodrow, Katherine R.
中科院分区：
文献类型：
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作者：
Eggensperger, Christina G.;Giagnorio, Mattia;Zodrow, Katherine R.
随着对清洁水需求的增加，对有效的可持续水处理系统的需求日益增长。我们利用康普茶冲泡过程中形成的细菌和酵母共生培养物（SCOBY）作为活水过滤膜（LFM）。LFMs具有超滤膜的功能，其渗透率为135 +/- 25 L m(-2) h(-1) bar(-1)，对30 nm纳米颗粒的截留率为90%。因为它们含有产生纤维素纤维的活微生物，所以LFM的表面在刺伤或切口后会愈合。穿刺或切口后，膜通透性在穿刺后迅速增加，在生长溶液中10天后恢复到原始通量的110% -250%。此外，LFMs可以使用现成的材料制造，增加了膜生产的可及性。
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.