Abstract: This study determines Kinetic studies on adsorption of Pb ions from an aqueous solution using an adsorbent from plant source, low-cost called as “Parthenium Stem powder” leaves, they have a common name as “Parthenium”. The adsorption studies were carried out in a batch process and at six different parameters such as agitation time and adsorbent dosage, initial concentration of Parthenium stem in the aqueous solution, pH of aqueous solution and the temperature effects were determined. From the experimentation it is determined that 0.5g of “Parthenium” stem powder of 53 μm size was obtained to be enough to remove 60.08% of 100mg/L concentration of Pb from 50mL of aqueous solution in 50 min. Results showed that adsorption of Pb increased with increase in adsorbent dosage. A significant increase in percentage removal of Pb was obtained as pH value increases from 4 to 5 and the percentage removal is Maximum as pH value increases from 6 to 7. The percentage removal decreases as pH value is beyond 7. The Freundlich and Langmuir models were applied to describe the equilibrium isotherms and isotherm constants were determined. The Kinetic studies show that the adsorption of Pb on the “Parthenium” stem powder follows pseudo-second-order kinetics. Various thermodynamic parameters such as enthalpy, Gibbs free energy and entropy of adsorption were also determined. Hence, the results show that “Parthenium” stem powder is effective in Pb removal and can be appreciably considered as most versatile, economical and feasible adsorbent for reclamation of Pb from aqueous solutions.
Keywords: WRIGHTIA TINCTORIA LEAF POWDER, “Parthenium” stem powder.
Title: Biosorption Performance of Wrightia Tinctoria Leaf Powder for the Removal of Manganese
Author: K. Dayana, Ch. V Ramachandramurthy
International Journal of Life Sciences Research
ISSN 2348-313X (Print), ISSN 2348-3148 (online)
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