Fly-ash-amended sand as filter media in bioretention cells to improve phosphorus removal.

@article{Zhang2008FlyashamendedSA,
  title={Fly-ash-amended sand as filter media in bioretention cells to improve phosphorus removal.},
  author={Wei Zhang and Glenn Otis Brown and Daniel E. Storm and Hailin Zhang},
  journal={Water environment research : a research publication of the Water Environment Federation},
  year={2008},
  volume={80 6},
  pages={507-16}
}
This study identified material with high phosphorus sorption suitable for bioretention filter media. Materials examined were fly ash, two expanded shales, peat moss, limestone, and two common Oklahoma soils--Teller loam and Dougherty sand. The peat moss was a phosphorus source, while the two soils, limestone, and one expanded shale had only modest sorption capacity. One expanded shale and the fly ash had significant phosphorus sorption. Fly ash is unsuitable for use in a pure form, as a result… CONTINUE READING