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Content Provider | SpringerLink |
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Author | Awadh, Salih Muhammad Abdulla, Fatma H. |
Copyright Year | 2017 |
Abstract | The Iraqi bentonite adsorption efficiency for Pb(II) from aqueous solutions was investigated using batch laboratory experiments. The adsorption affecting factors (pH, contact time, adsorbent dosage, ion concentration, and temperature) were empirically studied. The adsorption isotherms were described using Langmuir, Freundlich models. The adsorption efficiency of the Iraqi bentonite for Pb(II) ions decreased with the rise of temperature at 50 mg/L. The maximum adsorption capacity at 25 °C was 0.6563 mg/g, but dropped to 0.5250 mg/g at 35 °C. Variation in Gibbs free energy, enthalpy, entropy beside the adsorption energy was studied. The thermodynamic results explored that Iraqi bentonite is of high capacity for the adsorption lead ions, randomness, and exothermic reactions. So it was regarded as a good natural adsorbent can be reduced, specifically Pb(II) ions from the polluted sites. |
Starting Page | 1 |
Ending Page | 8 |
Page Count | 8 |
File Format | |
ISSN | 18666280 |
Journal | Environmental Earth Sciences |
Volume Number | 76 |
Issue Number | 11 |
e-ISSN | 18666299 |
Language | English |
Publisher | Springer Berlin Heidelberg |
Publisher Date | 2017-05-30 |
Publisher Place | Berlin, Heidelberg |
Access Restriction | Subscribed |
Subject Keyword | Bentonite Lead Sorption Aqueous solutions Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences |
Content Type | Text |
Resource Type | Article |
Subject | Global and Planetary Change Geology Soil Science Pollution Water Science and Technology Environmental Chemistry Earth-Surface Processes |
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