Effect of dissolved metal ions on PCE decomposition by gamma-rays.

Chemosphere

Radioisotope & Radiation Application Team, Korea Atomic Energy Research Institute, Yusong-gu, Taejon, South Korea.

Published: June 2002

This study investigates the effect of initial tetrachloroethylene (PCE) concentration, irradiation dose and dissolved metal ions such as Cr3+, Mn2+, Fe3+, Co2+, Ni2+, Cu2+ and Zn2+ on removal of PCE by gamma irradiation. The amount of removed PCE decreased with increase in initial PCE concentration and increased with increase in irradiation dose. PCE removal reached a maximum in the presence of Fe3+, while Cu2+ strongly hindered PCE decomposition. Except for Cu2+, the amount of removed PCE in the presence of metal ions was linearly dependent on the standard reduction potential of the metal ions. The extraordinary inhibition of Cu2+ in PCE removal was caused by the action of Cu2+ as a strong *OH scavenger, that was directly confirmed by electron paramagnetic resonance spectroscopy.

Download full-text PDF

Source
http://dx.doi.org/10.1016/s0045-6535(02)00070-xDOI Listing

Publication Analysis

Top Keywords

metal ions
16
pce
9
dissolved metal
8
pce decomposition
8
pce concentration
8
irradiation dose
8
amount removed
8
removed pce
8
pce removal
8
cu2+
5

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!