APPLICATION OF ACTIVATED CARBON PREPARED FROM OLIVE STONES IN THE REMOVAL OF TWO BASIC DYES FROM WATER

  • Souad Najar-Souissi Unité de Recherche de la Réaction Chimique et Commande des Procédés Industriels, ENIG, Route de Medenine, 6029 Gabès, Tunisia
  • Abdelmottaleb Ouederni Unité de Recherche de la Réaction Chimique et Commande des Procédés Industriels, ENIG, Route de Medenine, 6029 Gabès, Tunisia
  • Abdelhamid Ratel Unité de Recherche de la Réaction Chimique et Commande des Procédés Industriels, ENIG, Route de Medenine, 6029 Gabès, Tunisia
Keywords: Olive stones, activated carbon, Methylene Blue, Rhodamine B, adsorption

Abstract

Olive stones is produced in large quantities during the manufacture process of the olive oil in the Tunisian oleic industry. This by-product. have been converted to granular activated carbon by carbonisation in the nitrogen atmosphere followed by steam activation. Activated carbon so obtained with 1150 m2/g specific surface area and 0,53 cm3/g pore volume, essentially microporous, has been used for the adsorption of two basic dyes: Methylene Blue (MB) and Rhodamine B (RB) in aqueous solution. The equilibrium adsorption isotherms of the two dyes at 30°C shows Langmuir shape. The maximum adsorption capacity of MB and RB are found to be 303 mg/g and 217 mg/g respectively. Adsorbent affinity to tested dyes is related to electric and steric effects.

KEY WORDS: Olive stones, activated carbon, Methylene Blue, Rhodamine B, adsorption

Global Jnl Pure & Applied Sciences Vol.10(1) 2004: 91-94

Author Biography

Souad Najar-Souissi, Unité de Recherche de la Réaction Chimique et Commande des Procédés Industriels, ENIG, Route de Medenine, 6029 Gabès, Tunisia
Corresponding author. Tel: 216 75392100; fax: 216 75392190
Published
2004-05-25
Section
Articles

Journal Identifiers


eISSN: 1118-0579