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Original scientific paper

https://doi.org/10.17113/ftb.53.02.15.3790

Kinetic and Isotherm Modelling of the Adsorption of Phenolic Compounds from Olive Mill Wastewater onto Activated Carbon

Bahar Aliakbarian ; Department of Civil, Chemical and Environmental Engineering, University of Genoa, Genoa, Italy
Alessandro A. Casazza ; Department of Civil, Chemical and Environmental Engineering, University of Genoa, Genoa, Italy
Patrizia Perego ; Department of Civil, Chemical and Environmental Engineering, University of Genoa, Genoa, Italy


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Abstract

The adsorption of phenolic compounds from olive oil wastewater by commercial activated carbon was studied as a function of adsorbent quantity and temperature. The sorption kinetics and the equilibrium isotherms were evaluated. Under optimum conditions (8 g of activated carbon per 100 mL), the maximum sorption capacity of activated carbon expressed as mg of caff eic acid equivalent per g of activated carbon was 35.8 at 10 °C, 35.4 at 25 °C and 36.1 at 40 °C. The pseudo-second-order model was considered as the most suitable for kinetic results, and Langmuir isotherm was chosen to bett er describe the sorption system. The results confi rmed the effi ciency of activated carbon to remove almost all phenolic compound fractions from olive mill effl uent. The preliminary results obtained will be used in future studies. The carbohydrate fraction of this upgraded residue could be employed to produce bioethanol, and adsorbed phenolic compounds can be recovered and used in different industries.

Keywords

olive wastewater treatment; kinetics; polyphenol adsorption; activated carbon; modelling

Hrčak ID:

140233

URI

https://hrcak.srce.hr/140233

Publication date:

23.6.2015.

Article data in other languages: croatian

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