Environmental Engineering Reference
In-Depth Information
table 0. (Continued)
oeriew of treatment technologies based on nanotechnology
deelopment
status (00)
nanomaterial
description
Compounds treated
Ref.
Nanoscale.biopolymers.with.
tunable.properties.for.
improved.decontamination.
and.recycling.of.heavy.metals
Nanoscale.polymers.produced.by.bacteria.can.adsorb.
heavy.metals..Polymers.can.be.“tuned”.for.selectivity.
Cd,.Hg
Bench.scale
[67]
Other forms of treatment
Polyethylene.glycol.modiied.
urethane.acrylate.(PMUA).
nanoparticles
PMUA.nanoparticles.(~80.nm).have.a.hydrophilic.
exterior.and.hydrophilic.interior.(similar.to.a.surfactant.
micelle)..When.added.to.sediments,.these.
nanoparticles.enhance.the.release.of.sorbed.and.
sequestered.hydrophobic.organic.contaminants.(such.
as.polynuclear.aromatic.hydrocarbons),.making.them.
more.available.for.biodegradation.
Phenanthrene
Bench.scale
[68]
Fixed nanoparticles or nanostructures
Treatment by degradation
Ferragels,.comprising.nZVI.on.
a.support.medium,.used.to.
reduce.target.contaminants.in.
water
“Ferragels”.formed.by.reducing.borohydride.in.the.
presence.of.a.support.material.such.as.sand.to.create.
ZVI-coated.particles.that.can.be.used.in.remediation..
This.approach.was.developed.to.avoid.problems.with.
agglomeration.of.nZVI.
Reduction.and.immobilization.of.Cr(V).
and.Pb(II)
Bench.scale
[69]
Titanium.dioxide.catalysts
Used.to.catalyze.photolysis.of.organic.compounds.
Dyestuffs
Bench.scale
[70]
