Nanoscale Ni/Fe particles stabilized with cetyl trimethylammonium bromide (CTAB) were used to evaluate the potential of dechlorination of the pentachlorophenol (PCP). The effects of Ni/Fe dosage, Ni loading, surfactant, temperature on the dechlorination of PCP were investigated. The increase of Ni/Fe dosage enhanced the removal of PCP. The removal rate of PCP increased with the loading percentage of Ni from 0.25 wt % to 0.5 wt %, but decreased with the loading percentage of Ni from 0.5 wt % to 2 wt %. CTAB remarkably enhanced the removal of PCP using Ni/Fe nanoparticles. The observed enhancement of PCP removal and reduction by Ni/Fe-CTAB attributed to the increased sorption of PCP onto iron surfaces and the increased local PCP concentration in the vicinity of iron surface, accelerating the reduction of PCP. The activation energy of the removal reaction of Ni/Fe-CTAB, 81.6 kJ/mole, indicated a surface-control mechanism.

Degradation of pentachlorophenol by surfactant stabilized Ni/Fe nanoparticles

244th National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.