Biofiltration of high formaldehyde loads with ozone additions in long-term operation

@article{MaldonadoDiaz2014BiofiltrationOH,
  title={Biofiltration of high formaldehyde loads with ozone additions in long-term operation},
  author={G. Maldonado-Diaz and Sonia Arriaga},
  journal={Applied Microbiology and Biotechnology},
  year={2014},
  volume={99},
  pages={43-53}
}
Formaldehyde (FA) biofiltration was evaluated over 310 days with and without ozone addition. Without ozone, the biofilter was able to treat formaldehyde at inlet loads (ILs) lower than 40 g m−3 h−1, maintaining, under this condition, an average removal efficiency (RE) of 88 % for a few days before collapsing to zero. The continuous addition of ozone (90 ppbv) helped to recover the RE from zero to 98 ± 2 % and made it possible to operate at an IL of 40 g m−3 h−1 for long periods of operation… CONTINUE READING