Water Fern (Azolla filiculoides Lam.) has been assessed for nitrogen and phosphorus removal in outdoor experiments comparing sewage water (S) from an experimental aquaculture plant, well water (W) and mineral growth medium Hoagland (H). The experiments were undertaken during the spring and the summer. The yield of fern biomass and nitrogenase activity was higher in PI than in W and S waters. The enzyme activity had a decreasing trend with significant differences (p <0.05) in the three waters. Peroxidase (POD) activity in April decreased with significative differences in W and S waters (p <0.05). The electrical conductivity and the concentrations of NO3- in the three waters decreased significantly (p <0.05). The highest removal of nitrate from the media was obtained in July. In S water, NOT concentration decreased, while it increased in W water. PO43- concentration was very low in W and S waters and decreased in H medium. The results obtained confirm the ability of the fern to grow in sewage water. (C) 2001 Elsevier Science Ltd. All rights reserved.

Forni, C., Chen, J., Tancioni, L., GRILLI CAIOLA, M. (2001). Evaluation of the fern Azolla for growth, nitrogen and phosphorus removal from wastewater. WATER RESEARCH, 35(6), 1592-1598 [10.1016/S0043-1354(00)00396-1].

Evaluation of the fern Azolla for growth, nitrogen and phosphorus removal from wastewater

FORNI, CINZIA;TANCIONI, LORENZO;GRILLI CAIOLA, MARIA
2001-01-01

Abstract

Water Fern (Azolla filiculoides Lam.) has been assessed for nitrogen and phosphorus removal in outdoor experiments comparing sewage water (S) from an experimental aquaculture plant, well water (W) and mineral growth medium Hoagland (H). The experiments were undertaken during the spring and the summer. The yield of fern biomass and nitrogenase activity was higher in PI than in W and S waters. The enzyme activity had a decreasing trend with significant differences (p <0.05) in the three waters. Peroxidase (POD) activity in April decreased with significative differences in W and S waters (p <0.05). The electrical conductivity and the concentrations of NO3- in the three waters decreased significantly (p <0.05). The highest removal of nitrate from the media was obtained in July. In S water, NOT concentration decreased, while it increased in W water. PO43- concentration was very low in W and S waters and decreased in H medium. The results obtained confirm the ability of the fern to grow in sewage water. (C) 2001 Elsevier Science Ltd. All rights reserved.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore BIO/01
Settore BIO/03 - Botanica Ambientale e Applicata
Settore BIO/07
English
Con Impact Factor ISI
Azolla; Nitrogenous compounds; Wastewater treatment
Forni, C., Chen, J., Tancioni, L., GRILLI CAIOLA, M. (2001). Evaluation of the fern Azolla for growth, nitrogen and phosphorus removal from wastewater. WATER RESEARCH, 35(6), 1592-1598 [10.1016/S0043-1354(00)00396-1].
Forni, C; Chen, J; Tancioni, L; GRILLI CAIOLA, M
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/48567
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