NZVI can be easily synthesized using sodium borohydride, NaBH4, as a strong reducing agent .
The main goal of this research is to investigate the performance of degradation of hydrocarbon contaminants in soil by using the synthesized NZVI assisted by ultrasonic wave.
NZVI was synthesized in 300ml flask reactor with three open necks.
The sample of NZVI was thoroughly washed with ethanol before the XRD analysis to remove any impurities.
Scanning Electronic micrographs (SEMS of the synthesized NZVI when compared with each other shows that change the morphology of the final product by reducing the average particle size as elaborated in Figure 2.
This is because the competition between the ions of the salt and dye increases towards the active sites of the NZVI adsorbent which leads to the decrease in the basic blue-3 dye from synthetic solutions.
It was found that the removal efficiency of NZVI was increased with the enhance of basic blue-3 dye initial concentrations.
Another study shows that 136 Kg NZVI was sufficient for 11.
Figure 2: NZVI core-shell model  ne of the most important methods for purification of ground water is the application of CNT (Carbon nanotubes) as they can be used as membranes having nanoscale pores for contaminants filtration.
The most common route to NZVI synthesis employs sodium borohydride as the key reductant.
Kanel  used NZVI for the removal of Arsenic(III) from groundwater.
The EDX (energy dispersive X-ray) analysis of the synthesized NZVI with PEG (Fig.