Nanotechnology for domestic water purification - Nanotechnology in Eco-efficient Construction - page 407

Table 16.7 Composition of nanocomposite membranes

Membrane PS (g) NMP (g) Nanoparticle (g)

Polysulfone 18 82 Nil

Polysulfone + Ag 14.8 82 3.2 (silver)

Polysulfone + Cu 14.8 82 3.2 (copper)

Polysulfone + Ag + Cu 14.8 82 3.2 (silver-copper)

Membrane piece

Bacterial growth

(a)

Luria agar plate

(b)

(c)

￿ ￿ ￿ ￿ ￿ ￿

(d)

16.13 Biofouling-resistant property of membrane surfaces showing
no bacterial growth in the silver impregnated nanocomposite
membranes: (a) polysulfone; (b) polysulfone + copper;

(c) polysulfone + silver + copper; (d) polysulfone + silver.

prone to biofouling, and hence an anti-biofouling membrane was
developed.
The potential attributes of CNTs were discussed previously. Again the
emphasis is upon the fact that CNT is the only nanostructured material
which, on impregnation onto a membrane host matrix (Hinds et al. , 2004;