عنوان المقالة:Removal of chromium trivalent ions from aqueous solutions using bypass cement kiln dust and its application to tannery wastewater treatment
علي يوسف عكاشة | Aly Y. Okasha | 11228
- نوع النشر
- مجلة علمية
- المؤلفون بالعربي
- H. G. Ibrahim, M. Al-Meshragi, H. A. Elakrami, A. Y. Okasha
- الملخص العربي
- The studies on adsorption of trivalent chromium Cr(III) onto bypass cement kiln dust (BCKD) were conducted by varying various parameters such as contact time, initial chromium ion concentration, BCKD dose and initial pH. Langmuir and Freundlich isotherm models were applied to the equilibrium data. The percentage adsorption increased with decrease in pH and showed maximum removal of Cr(III) at initial pH value 2.5. Thermodynamic parameters such as standard Gibbs energy ΔGo , heat of adsorption ΔHo and entropy ΔSo were calculated. These thermodynamic parameters showed the process to be endothermic in nature. Desorption of Cr(III) from the spent BCKD has also been investigated. Desorption process suggest that the adsorption of Cr(III) ions on BCKD involves physisorption mechanism. Removal of Cr(III) from tannery wastewater by BCKD was testified.
- تاريخ النشر
- 28/08/2010
- الناشر
- 13th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction
- رابط الملف
- تحميل (202 مرات التحميل)