Nanotechnology for domestic water purification - Nanotechnology in Eco-efficient Construction - page 399

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

Technology
type

Flow rate/
water quantity

Useful
life

Labour
demands

Setup and
use Biological Organic Inorganic Unit Filter/media Maintenance

ArsenX No No ￿ Arsenic

￿ Chromium
￿ Molybdenum
￿ Uranium
￿ Vanadium

38 mg arsenic
per gram
media

Indefi nite $0.07-$0.20

per 1000 L

Cyclodextrin
Polymer

No Most

all

U 22 mg organ.

contamin.
per gram
media

Indefi nite U -

competitive

Polypyrrole
Polymer

U U ￿ Sea Salt

￿ Calcium
￿ Cesium
￿ Chromium
￿ Magnesium
￿ Perchlorate
￿ Other U

U Indefi nite Trained Moderate Occasional

regeneration
with
electrical
current by
trained
person

* Costs assume mass production.
** Biological contaminants: Bacteria, Bacterial Spores, Giardia & Cryptosp. Cysts, Coliform, Fecal Coliform, DNA & RNA, Fungi, Mold, Parasites, Protozoa, and
Viruses Organic contaminants: Pest-, Herb-, & Insecticides, Industrial Effl uents, MTBE, PAHS, PCBs, VOCs, and others. Inorganic contaminants: Heavy Metals,
Nitrites, Salts, Asbestos, Radionuclides, Calcium, Magnesium, and others.
*** V: Variable depending on.
**** U: Exact amount unspecifi ed.