کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1255165 971410 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sorption of Am(III) on Na-bentonite: Effect of pH, ionic strength, temperature and humic acid
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Sorption of Am(III) on Na-bentonite: Effect of pH, ionic strength, temperature and humic acid
چکیده انگلیسی

Sorption of Am(III) on Na-bentonite as a function of contact time, pH, ionic strength, humic acid (HA) and temperature was investigated under ambient conditions. The results showed that the sorption was strongly dependent on pH and ionic strength. Am(III) sorption can be described well by pseudo-second-order model. The presence of HA takes a positive effect at low pH; but a negative influence under high pH range. Enthalpy, entropy and Gibbs free energy (i.e., ΔH0, ΔS0 and ΔG0) calculated from sorption isotherms suggested that sorption process of Am(III) was spontaneous and endothermic.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Chemical Letters - Volume 23, Issue 10, October 2012, Pages 1189–1192
نویسندگان
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