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New Contributor III

New technology for cleaning contam. water - green chemistry or not?

Curious if this can be considered "green nano".  Anyone have thoughts?

The renewable heavy metal filter, designed by 18-year-old Perry Alagappan, removes 99% of heavy metals from water that passes through it. The filter, built from graphene nanotubes, can be rinsed with a vinegar concentrate and reused. The highly concentrated waste can then be evaporated, leaving a deposit of pure metal that can be used in many different applications.

Texas teenager creates $20 water purifier to tackle toxic e-waste pollution | Guardian Sustainable B...

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