1. Congo Red Dye Removal Using Ca-Al Layered Double Hydroxide: Kinetics and Equilibrium
- Author
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Thi, Hong Tham Nguyen, Nguyen, Duy Chinh, Nguyen, Thi Thuong, Tran, Van Thuan, Nguyen, Huu Vinh, Bach, Long Giang, N-Vo, Dai Viet, Nguyen, Dai Hai, Thuan, Doan Van, Do, Sy Trung, and Nguyen, Trinh Duy
- Abstract
This In this study, the Ca-Al layered double hydroxide was used as a potential adsorbent for the removal of Congo red from aqueous solutions. The effects of Initial concentration and contact time on the adsorption properties of Congo red by Ca-Al LDHs were studied. The removal rate of Conge red reached to 59.416 mg/g under room temperature with 0.2g of adsorbent, initial concentration of 50 ppm, adsorption time of 210 min, shaking speed of 90r/min. The experimental equilibrium data for the removal of Congo red were evaluated by various isotherm models. The pseudo-second-order kinetic models were found to fit the adsorption kinetics, and the equilibrium data were appropriately fitted to Langmuir and Freundlich model adsorption isotherm.
- Published
- 2019
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