Comparison of reductive dechlorination of p-chlorophenol using Fe0 and nanosized Fe0

Kinetics of TNT Degradation in The Presence of Zero Valent Iron Nanocatalyst

“…More detailed information on the pore size distribution is available from Fig. 3 constructed by plotting dVp/dr against the pore radius (29) . It is seen that most of the pores were located in the micro-pore range.…”

Degradation of 2,4,6-trinitrotoluene (TNT) from explosive wastewater using nanoscale zero-valent iron

“…The concentration of residual TNT at different degradation temperatures (20,25,30,35,40 and 45 • C) is presented in Fig. 1c.…”

“…hydrocarbon, such as reduction of chlorinated ethenes, chlorinated ethanes [16,17] and PCBs [18] as well as degradation of benzoquinone [19] and chlorophenol [20]. In addition, the removal of Cr(VI) and Pb(II) from water [21] while oxidizing Fe 0 to goethite (␣-FeOOH), and removal of As(V), As(III) and humic acid [22,23] by adsorption of nZVI have been reported.…”

Comments on “Comparison of reductive dechlorination of p-chlorophenol using Fe0 and nanosized Fe0” by R. Cheng, et al. [J. Hazard. Mater. 144 (2007) 334]

“…The article of Cheng and colleagues [1] was intrinsically interesting as its intended to compare the efficiency of conventional Fe 0 (mm to µm size) and nanosized Fe 0 for aqueous reductive dechlorination of p-chlorophenol. Such investigations are necessary to gain more details on the expected reactivity of nanosized Fe 0 .…”

“…These factors include [5,6]: elemental composition of used Fe 0 materials, Fe 0 pre-treatment (e.g., acid wash), Fe 0 particle size (mm, µm, nm), buffer application, the molar ratio of Another critical point of Cheng et al [1] work's is the used shaking intensity of 150 rpm. It is difficult to imagine which real world situation is mimicked by such a high shaking intensity.…”