Biorecovery of olive mill wastewater sludge from evaporation ponds
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URI: http://hdl.handle.net/10835/16029
ISSN: 1095-8630
DOI: https://doi.org/10.1016/j.jenvman.2022.115647
ISSN: 1095-8630
DOI: https://doi.org/10.1016/j.jenvman.2022.115647
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Martínez Gallardo, María Rosa; Jurado Rodríguez, Macarena Del Mar; López González, Juan Antonio; Toribio Gallardo, Ana Josefa; Suárez Estrella, Francisca; [et al.]Fecha
2022-10-01Resumen
Olive mill wastewater (OMW) resulting from the olive oil extraction process is usually disposed of in evaporation ponds where it concentrates generating a sludge that pollutes the ponds nearby area. In this study, four bio-treatments were applied for the in-situ bioremediation and valorization of OMW sludge: Landfarming, phytoremediation, composting and vermicomposting. In all cases, the OMW sludge was added with organic residues (mushroom compost, rabbit manure, and chicken manure). The bio-treatments were carried out in duplicate, inoculated and non-inoculated, to determine the effect of a specialized fungal consortium (Aspergillus ochraceus H2 and Scedosporium apiospermum H16) on the efficacy of the bio-treatments. The evaluation of chemical parameters, toxicity, and functional microbial biodiversity revealed that the four techniques depleted the toxicity and favored the stimulation of functional microbiota. Landfarming and phytoremediation allowed the decontamination and improvemen...
Palabra/s clave
Landfarming
Composting
Vermicomposting
Phytoremediation
OMW sludge