Abstract

The present study explores the effectiveness of yellow passion fruit (Passifloraedulis) peel a surplus low value waste, in removing hazardous cationic dyes like malachite green and crystal violet and anionic dye eosin yellow from aqueous solution. The influence of contact time, adsorbent dosage and metal concentration on the removal process were investigated. Batch studies indicated that maximumsorption capacity was for Eosin yellow (94%) whereas the % removal was 75% and 70% for Malachite green and crystal violet respectively.The sorption process followed the pseudo second order rate kinetics. A good fitting of metal sorption equilibrium data is obtained with Freundlich model in all the range of metal concentrations studied. The findings showed that passion fruit peel powder can easily beenvisaged as a new, vibrant, low cost adsorbent for dye clean up operations

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