The removal of copper ions by tyre char was studied in agitated batch contacting systems. Experiments were carried out to obtain kinetic and equilibrium data. The pseudo-first order and pseudo-second order models were...The removal of copper ions by tyre char was studied in agitated batch contacting systems. Experiments were carried out to obtain kinetic and equilibrium data. The pseudo-first order and pseudo-second order models were used to correlate kinetic data. The best fitting kinetic model was determined by choosing the equation resulting in the lowest sum of error squares （SSE）. The experimental data fitted well to the pseudo-second order model compared to the pseudo-first order model. The Langmuir model was applied to describe the equilibrium data obtained at pH 4.0 ±0. 1 and a fixed temperature of 25 ℃. The maximum capacity of copper adsorption onto the tyre char at an equilibrium copper concentration of 2.45 mmol/L was found to be 0.74 mmol/g. Since the sorption capacity is relatively high, tyre char can be considered as a suitable sorbent for the adsorption of copper in wastewater treatment systems.展开更多
文摘The removal of copper ions by tyre char was studied in agitated batch contacting systems. Experiments were carried out to obtain kinetic and equilibrium data. The pseudo-first order and pseudo-second order models were used to correlate kinetic data. The best fitting kinetic model was determined by choosing the equation resulting in the lowest sum of error squares （SSE）. The experimental data fitted well to the pseudo-second order model compared to the pseudo-first order model. The Langmuir model was applied to describe the equilibrium data obtained at pH 4.0 ±0. 1 and a fixed temperature of 25 ℃. The maximum capacity of copper adsorption onto the tyre char at an equilibrium copper concentration of 2.45 mmol/L was found to be 0.74 mmol/g. Since the sorption capacity is relatively high, tyre char can be considered as a suitable sorbent for the adsorption of copper in wastewater treatment systems.
