Author/Authors :
arslanoğlu, hasan fırat üniversitesi - mühendislik fakültesi - kimya mühendisliği bölümü, Elazığ, Türkiye
Title Of Article :
Removal of Cu(II) from aqueous solutions by using marble waste
Abstract :
In this study, the effects of temperature, Cu(II) concentration, adsorbent dose, size and mixing speed were investigated on depending contact time in removal of Cu(II) ions from aqueous solutions with a adsorbent marble waste. When marble waste was used as an adsorbent removal efficiency of Cu(II) was determined to be 89.2% at 200 rpm stirring speed; optimum dosage of adsorbent was 10 g/L and sorption efficiency at this dose was determined to be 83.4%. The kinetic data fit the pseudo second order kinetic model. Activation energy for Cu(II) sorption process were found to be 9.35 kJ/mol. The adsorption equilibrium data for the Cu(II) sorption process obeyed well for Langmuir isotherm and the maximum sorption capacity were calculated to be 208.33 mg/g for 25 °C. Thermodynamic parameters indicated this the Cu(II) adsorption process were endothermic (∆H°=12.88 kJ/mol) and spontaneous (∆G°=-8.56 kJ/mol).
NaturalLanguageKeyword :
Copper , Adsorption , Precipitation , Marble waste
JournalTitle :
Pamukkale University Journal Of Engineering Sciences
