کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1696207 1519128 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adsorption of fluoride ions by Zn–Al layered double hydroxides
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
Adsorption of fluoride ions by Zn–Al layered double hydroxides
چکیده انگلیسی

Zn–Al layered double hydroxides (LDHs) with different molar ratios Zn/Al (0, 0.17, 0.34, 0.97, 3.47, ∝) were prepared by the co-precipitation of chlorides, characterized and evaluated for their fluoride adsorption at room temperature from aqueous solutions. The fluoride adsorption of the as-synthesized LDHs was influenced by the chemical composition of the LDHs and ZA-11 (Zn/Al = 0.97) had the highest capacity for fluoride adsorption (1.14–4.16 mg/g). The adsorption increased after calcination of the LDH up to 500 °C. The equilibrium data were fitted to the Freundlich, Langmuir, and Temkin equations. The kinetics of fluoride adsorption followed the pseudo-second order model.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Clay Science - Volume 40, Issues 1–4, June 2008, Pages 54–62
نویسندگان
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