Several adsorption experiments were carried out by activated carbon that was manufactured from exhausted coffee, to find out removal characteristics of nitrate. The nitrate removal efficiency was increased with activated carbon dosage or contact time for adsorption. The equilibrium state of nitrate ...
Several adsorption experiments were carried out by activated carbon that was manufactured from exhausted coffee, to find out removal characteristics of nitrate. The nitrate removal efficiency was increased with activated carbon dosage or contact time for adsorption. The equilibrium state of nitrate adsorption was arrived after 120 minutes. At that time, the nitrate removal efficiency were determined to 59.0%, 86.0%, 90.0%, 91.0%, 95.0% on each activated carbon dosage of 10g/L, 20g/L, 30g/L, 40g/L, 50g/L. And the nitrate removal efficiency had a tendency to increase with a round of neutral value of pH, such as 90.0% on pH 3, 92.0% on pH 6, 93% on pH8, 81.0% on pH 10. The fluctuation of temperature was a little effect to the increasing of nitrate removal efficiency; 80.0% on 2℃, 81.0% on 10℃, 85.0% on 20℃, 87% on 30℃. The adsorption equilibrium equation was adaptable to Freundlich equation and Langmuir equation both. The exponent 1/n for Freundlich equation was proved 0.113, and the fixed number A and B for Langmuir equation was determined to 1.82, 1.04. The adsorption velocity could be calculated by Pseudo second order kinetic model. Breakthrough point, until accomplished to 50% removal efficiency on column experiment, were recorded differently on each packed rate of activated carbon; 0.5hr on 2g, 2.2hr on 5g, 16hr on 10g, 35hr on 15g and 70hr on 20g.
Several adsorption experiments were carried out by activated carbon that was manufactured from exhausted coffee, to find out removal characteristics of nitrate. The nitrate removal efficiency was increased with activated carbon dosage or contact time for adsorption. The equilibrium state of nitrate adsorption was arrived after 120 minutes. At that time, the nitrate removal efficiency were determined to 59.0%, 86.0%, 90.0%, 91.0%, 95.0% on each activated carbon dosage of 10g/L, 20g/L, 30g/L, 40g/L, 50g/L. And the nitrate removal efficiency had a tendency to increase with a round of neutral value of pH, such as 90.0% on pH 3, 92.0% on pH 6, 93% on pH8, 81.0% on pH 10. The fluctuation of temperature was a little effect to the increasing of nitrate removal efficiency; 80.0% on 2℃, 81.0% on 10℃, 85.0% on 20℃, 87% on 30℃. The adsorption equilibrium equation was adaptable to Freundlich equation and Langmuir equation both. The exponent 1/n for Freundlich equation was proved 0.113, and the fixed number A and B for Langmuir equation was determined to 1.82, 1.04. The adsorption velocity could be calculated by Pseudo second order kinetic model. Breakthrough point, until accomplished to 50% removal efficiency on column experiment, were recorded differently on each packed rate of activated carbon; 0.5hr on 2g, 2.2hr on 5g, 16hr on 10g, 35hr on 15g and 70hr on 20g.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.