The objective of this powerpoint presentation was
to examine how three commercially
available nanomaterials (TiO<sub>2</sub>, SiO<sub>2</sub>,
Fe<sub>2</sub>O<sub>3</sub>) impact the removal of TCE by
activated carbon adsorption.
Methods used include the following:
characterizing particle size distribution(PSD);
conducting adsorption isotherms involving
TCE, PAC, nanoparticles, natural organic matter (NOM); and,
running a small scale granular activated carbon (GAC) column. Experimental setup, analytical instrumentation, and results of PSD experiments and adsorption isotherms are presented. Presentation conclusions for
PSD experiments indicate the following:
silica particles did not display the ability to
agglomerate in water;
at a 1 mg/L concentration level, titania
aggregates stabilized around a size of 11 µm,
and at 0.5 mg/L, stabilized around 8 µm;
no observable difference was seen between
the PSD of 1.0 and 0.5 mg/L iron oxide solutions; and,
both the titania and iron oxide nanoparticle
aggregates stabilize (in size) quickly in water. Conclusions for adsorption isotherms indicate that: silica had no observable impact on TCE
adsorption by PAC;
titania and iron oxide both acted as
adsorption sites for TCE; and,
titania and iron oxide both impacted the
activated carbon adsorption of TCE,
with titania having the most significant
effect. Includes table, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.3 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 28 |
| Published : | 11/01/2008 |
