SORPTION OF NICKEL IONS ONTO CHEMICALLY MODIFIED PARTHENIUM HYSTEROPHOROUS L. AND THEIR QUANTITATIVE DETERMINATION BY TITRATION.
Journal Title: Journal of Water and Environmental Sciences - Year 2017, Vol 1, Issue 1
Abstract
The removal efficiency of Nickel ions from aqueous solution on chemically treated Parthenium hysterophorous leaf powder (PHLP) has been investigated. The adsorbent was characterized by SEM images and FTIR spectra analysis. The effect of several parameters such as pH, adsorbent dose, concentration of Ni ion solution and contact time was evaluated using batch experiments. Nickel ions removal was pH dependent and the maximum removal was found to be at pH 7. The maximum removal of Ni ions was achieved within 100 min after the start of every experiment. The equilibrium adsorption data were fitted to Langmuir, Freundlich, Temkin and Dubnin- Radushkevich (D-R) adsorption isotherm models to evaluate the models parameter. Experimental results showed that the Langmuir isotherm model best describes for the adsorption of metal than Freundlich isotherm model. Adsorption data were processed according to various kinetic models. Pseudo-first order and pseudo-second order were applied to fit the kinetic results. Pseudo-first order model was less applicable than pseudo-second order. Thermodynamic studies showed spontaneous and exothermic nature in the adsorption of Ni (II) onto PHLP.
Authors and Affiliations
Fairoz Ali Ansari, Masood Alam
Keywords
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- EP ID EP256981
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