Application of Zero-valent Iron Nanoparticles for Environmental Clean Up - Advanced Materials for Agriculture, Food and Environmental Safety - page 400

Contaminant
category

Nanoparticle Type Contaminant

removed

Reaction mechanism Remarks References

Inorganic
contaminants

nFe 0 /Ni NO 3 - Reduction Near neutral pH favourable for

reduction.

[160]

nFe 0 /Ag P Reduction Also exhibits antimicrobial and

antifungal activities

[161]

Resin supported
nFe 0 (Ferragel)

Cr(VI) and Pb(II) Reduction of Cr(VI) to

Cr(III), Pb(II) to Pb(0)

Ferragel reduction rate 30 times
higher than that of Fe 0 powder
and i llings

[64]

CMC stabilized
nFe 0

Cr(VI) Reductive immobilization nFe 0 reduces Cr(VI) leachability [50]

Calcium alginate
entrapped nFe 0

NO 3 - Reduction nFe 0 can be ef ectively entrapped in

beads without signii cant decrease
in reactivity towards NO 3 -

[92]

Calcium alginate
entrapped nFe 0

Cr(VI) Reduction Reduction follows pseudo i rst order

kinetics.

[93]

Bentonite sup-
ported nFe 0

Cr(VI) Reduction Also able to remove Pb(II), Cu(II)

and Zn(II) from electroplating
wastewater. Exhibit reusability.

[91]

Pillared bentonite
(Al-bent) sup-
ported nFe 0

Cr(VI) Reduction Reduction ei ciency much higher

than nFe 0 alone. nFe 0 /Al-bent
exhibit good stability and
reusability

[162]