In our pursuit of advanced technology, we forget that mother nature has already patented all the best ideas.
The idea here is that we don’t need to fabricate a membrane, because it’s easily available.
All in all, the setup would cost less than a couple dollars.
To learn more about the xylem filer, check out the link below.
Water Filter Made from a Tree Branch Removes 99% of E. coli Bacteria| Ecopreneurist viaAdafruit