کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6968876 1453014 2018 34 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimization of Pb(II) ions adsorption on nanohydroxyapatite adsorbents by applying Taguchi method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Optimization of Pb(II) ions adsorption on nanohydroxyapatite adsorbents by applying Taguchi method
چکیده انگلیسی
This paper presents an optimization approach for the removal of lead ions (Pb+2) by nano-hydroxyapatite powder form adsorbents that were produced from bovine bone by mechanical activation method. The Taguchi method was implemented for designing the experiments by considering four controllable factors including (1) ball milling time (A), (2) the initial concentration of lead ions (B), (3) initial pH of the solution (C); and (4) the adsorbent dosage (D), each factor at four different levels. According to the ANOVA analysis results, the removal efficiency of the lead ions was predominantly influenced by the adsorbent dosage (38.2%) and the initial lead ions concentration (23.64%), whereas the effect of initial pH of the solution was ignorable and the ball milling time had a mild contribution of 14.79%. The total optimum adsorptive lead ions removal of 100% was achieved by optimization process at operating conditions of Co = 180 mg L− 1, ball milling time = 2 h, pH = 3, and adsorbent dosage = 0.15 g. The Langmuir isotherm model fitted to the equilibrium results with good accuracy and a maximum sorption capacity of 200 mg g−1 was predicted by the model for the hydroxyapatite adsorbent ball milled for 2 h.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 349, 5 May 2018, Pages 186-194
نویسندگان
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