July 2014 Vol.2 No.4

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Original Research Article

Removal of Malachite Green from Aqueous Solutions by Adsorption Using Low Cost Boisorbent Neem Leaf (Azadirachta Indica)

Kassa Belay* and Mesfin Abebe

Adigrat University, Department of Chemistry, P.O. Box 50, Adigrat, Ethiopia

*Corresponding Author email: kassa.belay1@gmail.com

Accepted July 25, 2014

Abstract

Removal of dyes from waste water is a major ecological problem. Colorants present in dye house effluent are responsible for environmental pollution. Removal of malachite green from its aqueous solution by Neem tree has been investigated by means of a batch system. The effects of contact time, initial concentration of dye, particle size of adsorbent and adsorbent dosage on the adsorption of malachite green by Neem tree were studied. The results showed that adsorption of the dyes were found to increase as the adsorbent dosage increases, but decreases as initial concentration of adsorb ate increases, this is due to the active site of the adsorbent can absorb a certain concentration of the dye. The removal of adsorb ate by activated Neem bark leaves adsorption is investigated in present study.

Keywords: Spectrophotometer, Malachite green, Neem tree leaf