Key role of persistent free radicals in hydrogen peroxide activation by biochar: implications to organic contaminant degradation.

@article{Fang2014KeyRO,
  title={Key role of persistent free radicals in hydrogen peroxide activation by biochar: implications to organic contaminant degradation.},
  author={Guodong Fang and Juan Gao and Cun Liu and Dionysios D Dionysiou and Yu Wang and Dongmei Zhou},
  journal={Environmental science & technology},
  year={2014},
  volume={48 3},
  pages={1902-10}
}
We investigated the activation of hydrogen peroxide (H2O2) by biochars (produced from pine needles, wheat, and maize straw) for 2-chlorobiphenyl (2-CB) degradation in the present study. It was found that H2O2 can be effectively activated by biochar, which produces hydroxyl radical ((•)OH) to degrade 2-CB. Furthermore, the activation mechanism was elucidated by electron paramagnetic resonance (EPR) and salicylic acid (SA) trapping techniques. The results showed that biochar contains persistent… CONTINUE READING
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