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- W1515378789 abstract "The research aim to determine the influence of variations of contact time, pH, and concentration on the adsorption of Pb(II); adsorption capacity; kinetic parameters (reaction order and the value of k) and thermodynamic parameters (Ea, ?G, ?H, ?S) for the adsorption of Pb(II) using rice husk activated carbon were irradiated with and without ultrasonic waves. Method is making rice husk activated carbon, the effect of variation of time, pH, temperature and concentration. Analysis equation of pseudo first order reaction kinetics and pseudo second order, analysis equation of Langmuir and Freundlich, and thermodynamics. The method of analysis used in this research was the infra-red spectrophotometer (FT-IR), the scanning electron microscopy (SEM). The irradiated activated carbon adsorption capacity is 16.6667 mg/g and without irradiated is 9.8039 mg/g by Langmuir isotherm models. The optimum conditions for adsorption of Pb(II) at 50 minutes contact time, pH 5, temperature 40°C, whereas the concentration of Pb(II) 300 ppm adsorption is still experiencing. The result are suitable with the Langmuir isotherm models. Adsorption kinetics of Pb(II) were irradiated with ultrasonic waves followed the pseudo second order. Beside that thermodynamic parameters of ?H, ?S, ?G and Ea are -11.1075 kJ mole -1 , -0.04192 kJ mole -1 K, -4.55433 kJ mole -1 , 0.80213 kcal. mole -1 , respectively. Keywords: adsorption, ultrasonic, metal Pb(II), activated carbon rice husk." @default.
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- W1515378789 date "2014-01-01" @default.
- W1515378789 modified "2023-09-24" @default.
- W1515378789 title "The Adsorption of Pb(II) Ions on Activated Carbon from Rice Husk, Irradiated by Ultrasonic Waves:Kinetic and Thermodynamics Studies" @default.
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