Can bacterial biofiltration be replaced by autotrophic organisms in recirculating fresh water aquaculture?

@article{Ojanen2017CanBB,
  title={Can bacterial biofiltration be replaced by autotrophic organisms in recirculating fresh water aquaculture?},
  author={Suvi Ojanen and Esa Tyystj{\"a}rvi and Henrik Holmberg and Mikko Kouhia and Pekka Ahtila},
  journal={Aquaculture International},
  year={2017},
  volume={25},
  pages={1427-1440}
}
In recirculating aquaculture, a bacterial biofilter is applied to convert ammonium, excreted by the fish, to the non-toxic nitrate. Unfortunately, nitrifying bacteria produce off-flavor compounds that lower fish quality. We investigated, by calculations and estimations, possibilities to replace the biofilter by autotrophic organisms that incorporate ammonium in biomass, consume other mineral nutrients and produce marketable biomass and oxygen. The capacity of microalgae, macroalgae, duckweed… CONTINUE READING

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