nanotech water purification

As long-time readers of the blog will know, clean water is one of the things I am particularly passionate about. I needn’t, therefore, explain just how exciting I find this amazing new invention from South Africa’s Stellenbosch University, a cheap, disposable teabag filled with nanofibres that can purify up to a litre of water and then be safely discarded (the researchers claim that the discarded bags dissolve in liquids and have no environmental impact).

Quoting Stellenbosch microbiology researcher Marelize Botes:

“What is new about this idea is the combination of inexpensive raw materials, namely activated carbon and antimicrobial nanofibres, in point-of-use water filter systems. The nanofibres will disintegrate in liquids after a few days and will have no environmental impact. The raw materials of the tea-bag filter are not toxic to humans.”

The comments mention comparable systems like the LifeStraw and the LifeSaver Bottle, but this seems more practical than the former and cheaper than the latter.


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