Enhancing biodegradation of C16-alkyl quaternary ammonium compounds using an oxygen-based membrane biofilm reactor.

@article{Lai2017EnhancingBO,
  title={Enhancing biodegradation of C16-alkyl quaternary ammonium compounds using an oxygen-based membrane biofilm reactor.},
  author={Yenjung Lai and Aura Ontiveros-Valencia and Zehra Esra Ilhan and Yun Zhou and Evelyn Miranda and Juan Maldonado and Rosa Krajmalnik-Brown and Bruce E. Rittmann},
  journal={Water research},
  year={2017},
  volume={123},
  pages={825-833}
}
Quaternary ammonium compounds (QACs) (e.g., hexadecyltrimethyl-ammonium bromide, CTAB) are emerging contaminants with widespread use as surfactants and disinfectants. Because the initial step of QAC biodegradation is mono-oxygenation, QAC degraders require O2, but normal aeration leads to serious foaming. Here, we developed and tested an oxygen-based membrane biofilm reactor (O2-MBfR) that delivers O2 by diffusion through the walls of hollow-membranes to a biofilm accumulating on the outer… CONTINUE READING
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