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Activated carbons prepared from wood particleboard wastes: Characterisation and phenol adsorption capacities

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Abstract.
The problems of valorisation of particleboardwastes on one hand, and contamination of aqueous effluents
by phenoliccompounds on the other hand, are simultaneously consideredin thiswork. Preparation of activated
carbons from a two steps thermo-chemical process, formerly designed for generating combustible gases, is suggested. The resultant carbonaceous residue is activated with steam at 800 ◦C. Depending on the preparation conditions, surface areas within the range 800–1300 m2/g are obtained, close to that of a commercial activated carbon (CAC) specially designed for water treatment and used as a reference material. The presentwork shows that particleboardwaste-derived activated carbons (WAC) are efficient adsorbents for the removal of phenol from aqueous solutions, with maximum measured capacities close to 500 mg/g. However, most of times, the adsorption capacities are slightly lower than that of the commercial material in the same conditions, i.e., at equilibrium phenol concentrations below 300 ppm. Given the extremely lowcost of activated carbons prepared fromparticleboardwaste, it should not be a problem to use it in somewhat higher amounts than what is required with a more expensive commercial material. Phenol adsorption isotherms at 298K were correctly fitted by various equations modelling type I and type II isotherms for CAC and WAC, respectively. Phenol adsorption isotherms of type II were justified by a 3-stages adsorption mechanism.

Keywords:
Activated carbons
Microporosity
Phenol adsorption
Waste disposal
Particleboards

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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) 491–501

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

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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