Adsorption of reactive dyes and their mixtures on activated carbon. Kinetics, equilibrium and thermodynamic evaluation

• Autorzy: Kouhail Meriem , Elahmadi Zakia , Benayada Abbes , Dewil Raf

Identyfikatory

DOI

10.37190/epe200201

• Języki publikacji: EN

Abstrakty

EN

The adsorption of three reactive dyes (Reactive Bezactiv Yellow (RBY), Reactive Bezactiv Blue (RBB) and Reactive Bezactiv (RBR)) on a commercially available activated carbon (CAC) has been evaluated. It was shown that CAC is capable to effectively remove these dyes from a solution. The adsorption increased with higher contact time, adsorbent dose, and initial dye concentration. The data indicated that the adsorption kinetics of dyes on CAC followed a pseudo-second order model. The adsorption isotherms followed the Langmuir isotherm model. Evaluation of thermodynamic parameters revealed that the adsorption process is endothermic for all dyes and spontaneous in a single system and became spontaneous in mixture systems at high temperature, expect RBY and RBB in the ternary mixture. Adsorption was higher for RBY, followed by RBB, and was lowest for RBR. The total adsorption efficiency was confirmed by chemical oxygen demand (COD) measurements.

Słowa kluczowe

EN

adsorption efficiency; adsorption kinetics; Langmuir isotherm; reactive dye; COD

PL

efektywność adsorpcji; kinetyka adsorpcji; izoterma Langmuira; barwnik reaktywny; ChZT

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2020
• Tom: Vol. 46, nr 2
• Strony: 5--24
• Opis fizyczny: Bibliogr. 14 poz., tab., rys.

Twórcy

autor

Kouhail Meriem

• LEC-ESITH, Laboratory of Expertise and Control, Higher School of Textile and Clothing Industries, Casablanca, Morocco
• Mohammed-V University Rabat-EMI, Mohammedia School of Engineering, Environmental and Energy Process (GPEE), Rabat, Morocco

autor

Elahmadi Zakia

• Mohammed-V University Rabat-EMI, Mohammedia School of Engineering, Environmental and Energy Process (GPEE), Rabat, Morocco

autor

Benayada Abbes

• Mohammed-V University Rabat-EMI, Mohammedia School of Engineering, Environmental and Energy Process (GPEE), Rabat, Morocco

autor

Dewil Raf

• KU Leuven, Department of Chemical Engineering, Process and Environmental Technology Lab, J. De Nayerlaan 5, B-2860 Sint-Katelijne-Waver, Belgium

Bibliografia

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