Toxicity and organic content characterization of olive oil mill wastewater undergoing a sequential treatment with fungi and photo-Fenton oxidation

• Tipo: Artigo em Revista Científica Internacional
• Data: 2009

Autores

Celine I Justino (Autor) Outra; Katia Duarte (Autor) Outra; Filipe Loureiro (Autor) Outra; Ruth Pereira (Autor) Outra; Sara C Antunes (Autor) Outra; Sergio. M Marques (Autor) Outra; Fernando Goncalves (Autor) Outra; Teresa A P Rocha Santos (Autor) Outra; Ana C Freitas (Autor) Outra

Revista

Título: Journal of Hazardous Materials

Vol. 172 Nº 2

Páginas: 1560-1572

ISSN: 0304-3894

Editora: Elsevier

Indexação

ISI Web of Knowledge - 56 Citações

Scopus - 59 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia civil

Outras Informações

ID Authenticus: P-003-DJ0

DOI: 10.1016/j.jhazmat.2009.08.028

Abstract (EN): Olive oil mill wastewater (OOMW) is responsible for serious environmental problems. In this study, the efficiency of two treatments involving fungi and photo-Fenton oxidation, sequentially applied to OOMW was analyzed for organic compounds degradation and toxicity mitigation. The treatment with fungi (especially Pleurotus sajor caju) of diluted OOMW samples promoted a reduction of their acute toxicity to Daphnia longispina. Although this fungi species have not induced significant color reduction it was responsible for 72,91 and 77% reductions in chemical oxygen demand (COD), total phenolic and organic compound contents. After biological treatment, photo-Fenton oxidation seemed to be an interesting solution, especially for color reduction. However, the OOMWs remained highly toxic after photo-Fenton oxidation. Considering the second sequence of treatments, namely photo-Fenton oxidation followed by biological treatment, the former revealed, once more, a great potential because it can be applied to non-diluted OOMW, with significant reductions in COD (53-76%), total phenolic content (81-92%) and organic compounds content (100%). Despite fungal species still have demonstrated a high capacity for bioaccumulation of organic compounds, resulting from photo-Fenton oxidation, the biological treatment did not cause substantial benefits in terms of COD, total phenolic content and toxicity reduction.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 13