کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
626988 1455453 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sorption mechanism of Cs+, Co2+ and Eu3+ ions onto EGIB sorbent
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Sorption mechanism of Cs+, Co2+ and Eu3+ ions onto EGIB sorbent
چکیده انگلیسی

The sorption of Cs+, Co2+ and Eu3+ ions onto polyacylamide cerium titanate (EGIB) sorbent has been investigated at different reaction temperatures(30, 40, 50 and 60°C 1±°C). The sorption kinetics of these ions onto EGIB sorbent follows the pseudo-first-order rate equation. The sorption capacity was found to decrease as the reaction temperature increases. The sorption data were subjected to different sorption isotherms and the results verified that Freundlich isotherm is the best model to be applied; the values of 1/n were found to be 0.58, 0.45 and 0.38 for sorption of Cs+, Co2+ and Eu3+ ions, respectively, while, Cm values were 1.15, 2.75 and 1.82 mmol/g for the same ions at 30°C ±1°C. Negative values of ΔH for the uptake process on EGIB reflects the exothermic nature of the process. The calculated ΔH values were −18.23, −29.17 and −26.70 kJ/mol for Cs+, Co2+ and Eu3+ ions, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 237, Issues 1–3, February 2009, Pages 147-154