Catalytic wet air oxidation of olive mill wastewater

• Type: Article in International Scientific Journal
• Date: 2007

Authors

Gomes, HT (Author) Other; José Luis Figueiredo (Author) FEUP; Joaquim Luís Faria (Author) FEUP

Journal

Title: Catalysis Today

Vol. 124

Pages: 254-259

ISSN: 0920-5861

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 37 Citations

ISI Web of Science

Scopus - 43 Citations

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-004-99W

DOI: 10.1016/j.cattod.2007.03.043

Abstract (EN): The objective of this work was to study the suitability of catalytic wet air oxidation (CWAO) for the treatment of olive mill wastewater (OMW). Experiments were performed in a high pressure reactor at 100 and 200 degrees C under an oxygen partial pressure of 6.9 bar, using carbon supported platinum (1 wt.% Pt) and iridium (5 wt.% Ir) catalysts prepared by incipient wetness impregnation. At 100 degrees C, refractory organic compounds persisted even after prolonged reaction time (8 h). At 200 degrees C, complete total organic carbon and colour removal was obtained with the Pt/C catalyst after 8 h of reaction. A kinetic model was developed taking into account catalytic and non-catalytic reactions, formation of refractory compounds and catalyst deactivation. Very good agreement between the proposed model and CWAO experimental data at 200 degrees C was found. The results obtained in this work indicate that Pt/C is a promising catalyst for the CWAO of OMW.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6