Performance column adsorption of methylene blue using composite spent coffe ground-copper ferrites (SCG/CuFe2O4)

Abstract

Composite Spent Coffe Ground-Copper Ferrites (SCG/CuFe2O4) synthesized by the method of precipitation. Copper nitrate, Ferri nitrate, SCG and sodium hydroxide mixed and stirred at 80°C for 5h, then calcined at 600°C for 2 h. The purpose of this research is to determine capacity adsorption SCG/CuFe2O4 to adsorb Methylen Blue (MB) with a column system. Approximately 0.5 g of SCG/CuFe2O4 were packed in to the column. Infusion tube filled with 250 mL MB 20 mg.L-1 was adjusted to pH 10, streamed into the column with flow rate 0.8 mL/min and 1.2 mL/min. The results obtained show that the faster the flow rate, the adsorption capacity (q0) and Thomas constant (kTh) MB increase. The highest q0 and kTh values were obtained at a flow rate of 0.8 L/min at 80.13 mg/g, 0.0028 L/mg. min.Desorption of CuFe2O4 with 0.1 M HCl solution show with 3 times elution, all MB bound to the adsorbent can be removed.