EXPERIMENTAL STUDIES ON ADSORPTION BY MAGNIFERA INDICA LEAVES
Abstract
Decolourisation of dye (Congo red) from aqueous solution using an adsorbent prepared from Mango leaf was investigated in this study. The influence of time of mechanical shaking , mass of adsorbent(0.5,1,1.5,2 mg), initial pH, initial concentration (2000 ,1500,1000,500,250 mg/L) on adsorption has been evaluated. It is shown that adsorbent prepared from Mango leaf powder has a relatively high adsorption capacity for these adsorbates. For 500 mg/L of solution prepared, the percentage of decolourisation for 2 g of adsorbent and 1 hour of mechanical shaking was found to be 41.4% for Congo red.
All the experiments were carried out at normal room temperature (25 -28 ºC) and neutral pH. A set of readings taken by varying pH shows that the adsorption capacity is also influenced by pH.
KEYWORDS: Decolourisation, Congo Red, Adsorption, Colour removal.
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