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Low cost biosorbent “banana peel” for the removal of phenolic compounds from olive mill wastewater: Kinetic and equilibrium studies

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Abstract.
The aim of thiswork is to determine the potential of application of banana peel as a biosorbent for removing
phenolic compounds fromolive millwastewaters. The effect of adsorbent dosage, pH and contact time
were investigated. The results showed that the increase in the banana peel dosage from 10 to 30 g/L significantly increased the phenolic compounds adsorption rates from 60 to 88%. Increase in the pH to above
neutrality resulted in the increase in the phenolic compounds adsorption capacity. The adsorption process
was fast, and it reached equilibrium in 3-h contact time. The Freundlich and Langmuir adsorption models
were used for mathematical description of the adsorption equilibrium and it was found that experimental
data fitted very well to both Freundlich and Langmuir models. Batch adsorption models, based on
the assumption of the pseudo-first-order, pseudo-second-order and intraparticle diffusion mechanism,
showed that kinetic data follow closely the pseudo-second-order than the pseudo-first-order and intraparticle
diffusion. Desorption studies showed that low pH value was efficient for desorption of phenolic
compounds. These results indicate clearly the efficiency of banana peel as a low-cost solution for olive mill
wastewaters treatment and give some preliminary elements for the comprehension of the interactions
between banana peel as a bioadsorbent and the very polluting compounds from the olive oil industry.

Keywords:
Banana peel
Adsorption
Phenolic compounds
Olive mill wastewaters
Desorption

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Informasi Detail

Judul Seri

Journal of Hazardous Materials

No. Panggil

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Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Journal of Hazardous Materials 166 (2009) 117–125

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

LINGKUNGAN HIDUP

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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