ADSORPTION EFFICACY OF ADMIXTURES ON LEAD CONTAMINATED POROUS MEDIA
DOI:
https://doi.org/10.11113/mjce.v27.15933Keywords:
Pb (II), retardation factor, distribution coefficient, sorption, batch equilibrium testAbstract
Adsorption of lead (II) ions on to the low cost admixtures such as fly ash, charcoal and shredded tyre pieces was investigated to assess the possible uses of these adsorbents. The influences of various proportions of adsorbents, adsorbent dosage, initial concentration and pH were investigated. The maximum % lead removal was achieved at 5% of charcoal (i.e., 94.84 % at pH of 4.8) and 15% of shredded tyre (i.e., 93.74% at pH of 9) admixed soil correspondingly. The distribution coefficient values are increased up to 10% of charcoal. For both fly ash and shredded tyre pieces, the convex shape of curve was observed. The optimum levels of additives for improving sorption capacity of soil are found to be 10% of charcoal, 15% of fly ash and 15% of shredded tyres blended soil. At the end, out of all admixtures charcoal showed good adsorption capacity compared to other additives and available locally at low cost.References
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