Equilibrium and thermodynamic studies of Pb(II), Zn(II), Cu(II) and Cd(II) adsorption onto mesembryanthemum activated carbon
عنوان مقاله: Equilibrium and thermodynamic studies of Pb(II), Zn(II), Cu(II) and Cd(II) adsorption onto mesembryanthemum activated carbon
شناسه ملی مقاله: JR_JMCH-3-1_001
منتشر شده در در سال 1399
شناسه ملی مقاله: JR_JMCH-3-1_001
منتشر شده در در سال 1399
مشخصات نویسندگان مقاله:
Abdulfattah Alkherraz - Chemistry Department, Faculty of Science, Misurata University, Misurata-Libya
Aisha Ali - Chemistry Department, Faculty of Science, Misurata University, Misurata-Libya
Khaled Elsherif - Chemistry Department, Faculty of Science, University of Benghazi, Benghazi-Libya
خلاصه مقاله:
Abdulfattah Alkherraz - Chemistry Department, Faculty of Science, Misurata University, Misurata-Libya
Aisha Ali - Chemistry Department, Faculty of Science, Misurata University, Misurata-Libya
Khaled Elsherif - Chemistry Department, Faculty of Science, University of Benghazi, Benghazi-Libya
Adsorption of Pb(II), Zn(II), Cu(II), and Cd(II) ions onto Mesembryanthemum activated carbon in a batch experimentby taking the consideration of adsorbent particle size, initial concentration, temperature, and pH was studied. Langmuir and Freundlich isotherm models were tested to fit the equilibrium data. Freundlich isotherm model gave a better fit to our experimental data than the Langmuir model. The adsorption capacity values were ۶۶.۶۷, ۵۲.۶۳, ۴۵.۴۵, and ۴۰.۰۰ mg/g for Pb(II), Zn(II), Cu(II), and Cd(II), respectively. The ideal pH for all metal ions adsorption was at pH ۵. The obtained thermodynamic parameters suggested that the adsorption process was physical, spontaneous (ΔGo< ۰), and endothermic (ΔHo> ۰).
کلمات کلیدی: heavy metals, Adsorption, Equilibrium, Thermodynamics
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1324421/