The Luffa Cynlidrica fibre as discoloration medium of the aqueous effluents

Full text.The vegetal fibres of Luffa Cylindrica sponge are characterized in this work with electronic scanning microscopy. Having alveolar mico-porous structure, the material prepared under various treatments is then used for the removal of dissolved dyes from industrial effluents. The obtained results reveal that basic dyes of the triarylcarbonium structure type such as the Crystal violet present non negligible affinity toward the vegetal material on which substantial adsorption is observed within few hours contact time. The adsorption equilibria are fitted at 25 celsius degree according to the Van Vliet-Weber and the hybrid Langmuir-Freundlich correlations. Furthermore, quantitative elution of the sorbed dye is achieved with aqueous solutions of acetone or ethanol at 50%, v/v, which indicates to doubly advantageous use of the sorbent in the recovery and recycling of the dye as well as in the discoloration of the effluents