Details

Autor(en) / Beteiligte

• Martínez-Rabelo, F.
• Gómez-Guzmán, L.A.
• García-Segura, D.R.
• Villegas-García, E.
• Rodriguez-Campos, J.
• Velázquez-Fernández, J.B.
• Hernández-Castellanos, B.
• Barois, I.
• Contreras-Ramos, S.M.

Titel

Hydrocarbon bioremediation in a pilot-scale: A combination of bioaugmentation, phytoremediation, and vermiremediation

Ist Teil von

• Environmental technology & innovation, 2023-08, Vol.31, p.103210, Article 103210

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2023

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• This work aimed to validate the removal of total petroleum hydrocarbons (TPH) in a pilot system (on-site). Six piles of oil-contaminated soil were treated with 1) bioremediation (BIO) by three simultaneous technologies (bioaugmentation (bacterial consortium), phyto- (Panicum maximum) and vermiremediation (Pontoscolex corethrurus)), and compared with 2) natural attenuation (NA). Removal of alkanes, polycyclic aromatics (PAH), total petroleum hydrocarbons (TPH), and bacterial diversity were evaluated at 0, 35, 70, and 112 days. Biomass and number of shoots of P. maximum, the secondary vegetation, and the abundance of meso and macrofauna were measured initially and at the end. After 112 days, BIO significantly removed more alkanes (76%), PAH (68%), and TPH (76%) than NA treatment (23%, 19%, 24%). P. maximum biomass increased significantly (300%), with 97.3 ± 11.8 shoots m−2. After 112 days, the secondary plants Lippia dulcis, Taraxacum officinale, Bidens pilosa and bacterial phylum Actinobacteria (18%) were the most abundant. The abundance of the earthworm Protozapotecia australis was reduced, while the most abundant group of mesofauna was Acari (56%–71%). This combination of technologies improved the development of grass and secondary plants, which generated a more favorable microhabitat for soil organisms to remove TPH more efficiently. •Bacterial/vermi/phyto-bioremediation removes >70% of TPH in a pilot system.•The biomass and number of grass shoots increased significantly after 112 days.•Twenty-one herbaceous were identified after bioremediation after 112 days.•Mixed bioremediation ameliorates soil health. [Display omitted]