Agro-Industrial Effluent Phytoremediation with Lemna gibba and Hydrocotyle ranunculoides in Water Recirculating Mesocosms

MAGDALENO, A.; FAGGI, A; BASILICO, G; MORETTON, J; PAZ, M; DE CABO, L

CLEAN-SOIL AIR WATER

WILEY-V C H VERLAG GMBH

Lugar: Weinheim; Año: 2017 vol. 45 p. 1 - 7

1863-0650

AbstractTreatment of agro-industrial effluents can be carriedout via phytoremediation with mono or multispecificmacrophyte crops.Asix day phytoremediationassay was performed in mesocosms with continuous recirculation of wastewater froma poultry industrywith the macrophytes Lemnagibba and/or Hydrocotyleranunculoides. The plant effects over removal of nutrients (N, P and C),fecal contamination indicators (total coliforms and Escherichia coli) and the genotoxicity of wastewater by Allium cepa test were evaluated.A decreaseof up to 97.6 % of total coliforms and E.coli, with no significant differences between treatments wasobserved. Thehighest removal rates of ammonium (77.9%), dissolved inorganic nitrogen (77.9%),soluble reactive phosphorus (47.6%), total phosphorus (60.6%) and particulateorganic carbon (82.1%) were observed in mesocosms with L. gibba+H. ranunculoides,although there were nosignificant differences (p>0.05) with respect to themonospecific culture ofL. gibba. Lower rates of nutrients removalwere observed in monospecific culture of H.ranunculoides. Moreover, the use of both species meant a reduction of thegenotoxicity of wastewater, with no chromosomal aberrations and micronuclei in meristematicrootcells of A. cepa. The obtained resultsconfirm the benefits of the joint use ofH.ranunculoidesand L. gibba forphytoremediation of wastewater from the poultry industry, being preferable tothe use of monospecific crops.