Adsorption of Copper and Iron Using Low Cost Material as Adsorbent

Abstract

In this study, pine fruit was used as solid adsorbent for removal of ferrous and copper ions from aqueous solutions through batch equilibrium technique. The influence of contact time, pH of the solution and initial concentration of metal ions on adsorbed amount of metal ions were investigated. 90 minutes of adsorption time was found sufficient to reach equilibrium for ferrous ion and 120 minutes for copper ion. Adsorption of metal ions were pH dependent and the results indicate the optimum pH for the removal of Fe+2was found to be 5.0 and that of Cu+2was 7.0, the highest adsorption capacity was found to be 4.8 and 14.1 mg of metal ion per gram of adsorbent at initial concentration of 22.22 mg/L and 57.6 mg/L of ferrous and copper ions respectively and would be higher with higher initial concentration. Ferrous ion was removed by 96.3 - 97.3% and copper ion by 94.1-96% along the whole range of initial concentrations. Isotherm studies showed that the data were best fitted to the Freundlich isotherm model. The kinetic data corresponded well with the pseudo-second order equation, suggesting that the adsorption process is presumably a chemisorption.

Sesame Husk as Adsorbent for Copper(II) Ions Removal from Aqueous Solution

“…Time (min) 95.13% after 15 minutes of contact time. The lower contact time to reach equilibrium observed in this study indicates that the adsorption process is quite fast.…”

Removal of Cr(VI) from Aqueous Solution Using Modified Pomegranate Peel : Equilibrium and Kinetic Studies

“…It is by far the most widely used process for the removal of toxic metal ions from aqueous solution. Many papers have appeared on the production of low-cost adsorbent using cheaper and readily available materials [12][13][14][15][16][17][18][19][20] .…”

Modification of coal fly ash waste by using core-shell method for Cu2+ adsorbent material

“…This is due to the increasing number of H+ ions on the surface of the adsorbent so that Cu metal is increasingly challenging to adsorb. This is also supported by research by Elais and Dawood (2008) that alkaline properties will further optimize the absorption of Cu(II) [27].…”