Nanotechnology for domestic water purification - Nanotechnology in Eco-efficient Construction - page 400

Table 16.6 Continued

Contaminants removed Amount of water treated Cost (US$)* Ease of use

Setup
and
use

Flow rate/
water quantity

Filter/
media

Labour
demands

Technology type Biological Organic Inorganic Useful life Unit Maintenance

CNT
membranes

Most all** U**** ￿ sea salt

￿ Arsenic
￿ Cadmium
￿ Mercury
￿ Selenium

U - > reverse
osmosis
membranes

U U - 75% < reverse

osmosis

Use comparable to reverse
osmosis membranes
Requires less frequent
maintenance

Filters Most all ￿ Pest-, Herb-, &

Insecticides
￿ Industrial
Effl uents
(Almost all
org. cont. can
be removed
through
functionalizing
the material)

￿ Arsenic
￿ Lead (Almost
all inorg. cont.
can be
removed
through
functionalizing
the material)

6 l/
hr
- prototype

U U -

competitive

Unskilled Easy n/a

Waterstick 0.67 L/min 200-300 L

per stick

U -
competitive

n/a