کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8862953 1620149 2017 25 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Novel activated carbon from Manihot esculenta Crantz for removal of Methylene Blue
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست مهندسی محیط زیست
پیش نمایش صفحه اول مقاله
Novel activated carbon from Manihot esculenta Crantz for removal of Methylene Blue
چکیده انگلیسی
The adsorptive removal of Methylene Blue by a novel bio char namely Cassava Rind Carbon was studied in a batch system. Moreover, several experiments were performed to optimize operating conditions of the adsorption process. Thermo gravimetric analysis investigates the thermal behaviour of the raw material. The surface functional groups were identified with Attenuated Total Reflectance Fourier Transform Infra-Red spectroscopy. The carbon surface was also characterised by BET surface area, scanning electron microscopy, X-ray diffraction and zero charge point of pH. Among the three kinetic models used to calculate the adsorption rate constants, the pseudo-second order was the most accurate. The experimental isotherms were analysed and Redlich-Peterson's model provided the best fit. The maximum capacity according to Langmuir model was 565 mg g−1 at 25 °C. The thermodynamic study revealed that the adsorption is endothermic, physical and random. The temperature, the mass of adsorbent and the concentration of dye were the three factors optimized in a Box Behnken Response Surface Methodology, with an optimal amount of adsorbed MB of 771 mg g−1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sustainable Environment Research - Volume 27, Issue 5, September 2017, Pages 215-222
نویسندگان
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