کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
641879 1457011 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Removal of Cu(II) ions from aqueous solution using sulfonated magnetic graphene oxide composite
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Removal of Cu(II) ions from aqueous solution using sulfonated magnetic graphene oxide composite
چکیده انگلیسی

Graphene oxide has received world-wide attention due to its exceptional physicochemical properties. Herein, a sulfonated magnetic graphene oxide composite (SMGO) was synthesized from graphene oxide and was used as adsorbent for removing Cu(II) ions from aqueous solution. The composite was characterized by TEM, EDS, particles size, BET, TG-DTA, FT-IR, and Raman. It can be separated and recovered easily using magnetic separation technology. The effects of operating parameters such as pH, Cu(II) concentration and temperature on the Cu(II) adsorption were investigated by using a response surface methodology (RSM). Optimum Cu(II) uptake of 62.73 mg g−1 was achieved at pH 4.68, Cu(II) concentrations 73.71 mg L−1, and temperature 50 °C. The adsorption process can be well described by the pseudo-second order kinetic model. The experimental data of isotherm followed the Langmuir isotherm model. Moreover, the thermodynamic parameters calculated from the temperature-dependent isotherms indicated that the adsorption reaction was an endothermic and spontaneous process. All results indicate that the SMGO is a promising adsorbent for the efficient removal of copper ions from wastewater.


► A novel graphene oxide based adsorbent named SMGO was successfully prepared.
► The SMGO is an excellent adsorbent for the removal of Cu(II) ions.
► The adsorbent can be separated from reaction medium easily.
► The adsorption process can be modeled and optimized with RSM technique.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 108, 19 April 2013, Pages 189–195
نویسندگان
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