Bioremediation of Olive Mill Wastewater sediments in evaporation ponds through in situ composting assisted by bioaugmentation
Identifiers
URI: http://hdl.handle.net/10835/15017
ISSN: 0048-9697
DOI: https://doi.org/10.1016/j.scitotenv.2019.135537
ISSN: 0048-9697
DOI: https://doi.org/10.1016/j.scitotenv.2019.135537
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Martínez Gallardo, María Rosa![University of Almería authority University of Almería authority](/themes/Mirage2/images/autoridades/autoridad.png)
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Date
2019-11-16Abstract
The common method for the disposal of olive oil mill wastewater (OMW) has been its accumulation in evaporation ponds where OMW sediments concentrate. Due to the phytotoxic and antimicrobial effect of OMW, leaks
from ponds can pollute soils and water bodies. This work focuses on the search for microorganisms that can be
used as inocula for bioremediation of polluted matrices in OMW ponds by means of in situ composting. Two
fungi isolated from OMW sediments, Aspergillus ochraceus H2 and Scedosporium apiospermum H16, presented
suitable capabilities for this use as a consortium. Composting eliminated the phyto- and ecotoxicity of OMW sediments by depleting their main toxic components. Inoculation with the fungal consortium improved the bioremediation efficacy of the technique by hastening the decrease of phytotoxicity and ecotoxicity and enhancing
phytostimulant property of compost produced. This procedure constitutes a promising strategy for bioremediation of OMW polluted sites.
Palabra/s clave
Phytotoxicity
Ecotoxicity
Phenolic compounds
In situ composting
Scedosporium apiospermum
Aspergillus ochraceus