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Adsorption isotherms and kinetics Studies for the removal of Pb ( II ) from Aqueous Solutions using Low-cost adsorbent
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ghasemi, Nahid Mirali, Sara Ghasemi, Maryam Mashhadi, Somaye Tarraf, M. |
| Abstract | In this present work, the ability to remove Pb(II) from aqueous solutions was studied using waste almond shells (AS) as adsorbent. Activated carbon was prepared from agricultural waste (AS) by chemical activation with H2SO4 as an activating agent at 180 C. Adsorption isotherms were expressed by Langmuir and Freundlich adsorption models. Results were analyzed at different temperatures and determined the characteristic parameters for each adsorption isotherm. The maximum sorption capacity qm was found to be almost 133.3, 125.0 and 111.1, by using Langmuir isotherms at 25oC, 45oC and 60 oC, respectively. The kinetic data were analyzed using pseudo-first-order and pseudo-second-order kinetic models. The kinetic uptake data were best interpreted by a pseudo second-order kinetic model with values of rate constants of adsorption of 1.24 x 10 (g mg·min).The results of this study show that the (AS) is an efficient adsorbent for the removal of Pb(II) from aqueous solutions. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.ipcbee.com/vol32/014-ICESE2012-D040.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
