Environmental Engineering Reference
In-Depth Information
table 0.
summary of selected Case studies on nzVi [-]
target Compounds and
initial Concentrations
site
effect of treatment
nzVi addition
notes
Nease.Chemical.Site,.OH
[TCE].~.70.mg/L
[PCE].~.20.mg/L
[DCE]DNAPL
After.4.weeks,
[PCE].decreased.38-88%
[TCE].decreased.30-70%
[DCE].increased.0-100%
BNP.-.nZVI.with.Pd
Pilot-scale.test;.work.ongoing.
NAES.Lakehurst,.NJ
After.6.months,
[S.VOCs].decreased.74%
[TCE].decreased.79%
[DCE].decreased.83%
BNP.-.nZVI.with.Pd
Did.not.achieve.reducing.conditions..
Potentially.deactivated.nZVI.due.to.
mixing.with.oxygenated.water..Decrease.
in.contaminant.concentrations.may.have.
resulted,.in.part,.from.dilution
[S.VOCs].~.360.mg/L.[TCE].~.
56.g/L
NAS.Jacksonville,.FL
TCE.PCE.1,1,1-TCA.1,2-DCE
“Signiicant”.reduction.in.TCE;.
some.increases.in.cis-1,2-
DCE.and.1,1,1-TCA
BNP.-.nZVI.with.Pd
Did.not.achieve.reducing.conditions..
Potentially.deactivated.nZVI.due.to.
mixing.with.oxygenated.water,.or.used.
insuficient.iron
Trenton.Switchyard,.NJ
Decreased.total.VOC.
concentrations.by.up.to.90%.
within.24.weeks.after.
injection
NanoFe.Plus™.(nZVI.with.
catalyst.and.support.
additive).injected.in.slurry.
up.to.30.g/L
Treatment.signiicantly.reduced.ORP.and.
increased.pH.in.most.monitoring.wells
[S.VOCs].up.to.~1,600.mg/L;
VOCs.included.1,1-DCA,.1,1-
DCE,.1,1,1-TCA,.1,2-DCA,.
TCE
Launch.Complex.34,.FL
Emulsiied.nZVI Longer-term.reduction.potentially.due.to.
biodegradation
Note:
. Abbreviations:.BNP.-.bimetallic.nanoparticle;.DCA.-.dichloroethane;.DCE.-.dichloroethylene;.DNAPL.-.dense.nonaqueous.phase.liquid;.PCE.-.perchloroethylene.
(tetrachloroethylene);.Pd.-.palladium;.TCA.-.trichloroethane;.TCE.-.trichloroethylene;.VOCs.-.volatile.organic.compounds.
TCE
DNAPL
After.5.months,
[TCE].decreased.57-100%
