A new valorisation strategy of olive mill wastewater: Impregnation on sawdust and combustion

The disposal of olive mill wastewater (OMWW) by-product is one of the principal environmental problems of the olive oil industry. Therefore, several treatments have been proposed to reduce their environmental impacts; however, the high cost and the antibacterial effect of polyphenols are limiting fa...

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Bibliographic Details
Published in:Resources, conservation and recycling conservation and recycling, 2012-02, Vol.59, p.4-8
Main Authors: Jeguirim, Mejdi, Chouchène, Ajmia, Réguillon, Alain Favre, Trouvé, Gwenaelle, Le Buzit, Gérard
Format: Article
Language:English
Subjects:
absorption
antibacterial properties
Applied sciences
Atmospheric pollution
Biological and medical sciences
carbon
Chemical engineering
Combustion
emissions factor
Environment and Society
environmental impact
Environmental Sciences
Exact sciences and technology
Fixed bed reactor
Food engineering
Food industries
Fundamental and applied biological sciences. Psychology
Gaseous emissions
General aspects
General purification processes
industry
Olea
Olive mill wastewater
olive oil
olives
oxides
oxygen consumption
Pollution
polyphenols
Reactors
recycling
Sawdust
temperature
thermal properties
wastewater
Wastewaters
Water treatment and pollution
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Summary:The disposal of olive mill wastewater (OMWW) by-product is one of the principal environmental problems of the olive oil industry. Therefore, several treatments have been proposed to reduce their environmental impacts; however, the high cost and the antibacterial effect of polyphenols are limiting factors for the different processes. A new valorisation strategy of OMWW based on absorption on sawdust followed by combustion has been studied. Two OMWW/sawdust blends, named impregnated samples (IS) with different mass ratios of OMWW in the mixture were prepared. In order to study the thermal behaviour of IS samples, combustion experiments were performed in a fixed bed reactor under isothermal conditions in a temperature range of 500–700 °C. In order to estimate the efficiency of the thermal process, emission factors of carbon oxides and oxygen consumption were measured. The thermal behaviours of IS were compared with that of the original sawdust under the same experimental conditions.
ISSN:0921-3449
1879-0658
DOI:10.1016/j.resconrec.2011.03.006