Congo Red Dye Removal Using Ca-Al Layered Double Hydroxide: Kinetics and Equilibrium
2019 ◽
Vol 814
◽
pp. 463-468
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Keyword(s):
Red Dye
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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.
2021 ◽
Keyword(s):
2013 ◽
Vol 11
(1)
◽
pp. 501-509
2017 ◽
Vol 23
(4)
◽
pp. 447-456
Keyword(s):