Nanoscale Porous Materials for Water Treatment: Advances and Challenges - Nanotechnologies for Water Environment Applications - page 337

results show that unstabilized INP cannot be transported into groundwater systems. On
the other hand, the S-INP can be transported like a tracer without significant retardation.
However, the S-INP plume migrated downward as it moved horizontally in the physical
model, indicating that small density gradients have significant influence on two
dimensional transport (Kanel et al., 2008). Figure 11.10 shows schematic diagram for
applying S-INPs as a chemical reactive barrier (CRB) for in-situ groundwater
remediation.
Figure 11.10 Schematic diagram of injection of chemical reactive barrier for in-situ
groundwater treatment.
11.2.2 Carbon Based Nanoporous Materials
Carbon based nanoporous material (CNM) is one of the most active and diverse
research fields for environmental application. It covers a broad field from conventionally
used activated carbon to novel materials like carbon nanotubes and fullerenes. Based on
the route of synthesis as well as its chemical and physical structure, CNM properties
vary tremendously. This has attracted the environment community, and CNM has been
used as one of the most active materials for contaminants removal. Hence, it has been
widely applied in liquid phase adsorption, separation, and purification processes as an
extremely good adsorbent, or a very good catalyst (Radovic et al., 2001; Savage and
Diallo, 2005; Logar and Kaui, 2006).