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Absorption of methylene blue from aqueous solutions on activated coal CAN-9: kinetics and equilibrium studies

Tudor Lupascu / Mihail Ciobanu / Elena Culighin

The adsorption of methylene blue and the kinetics of adsorption of aqueous solutions on activated carbon CAN-9, obtained from walnut shells by chemical activation with orthophosphoric acid were studied. It has been shown that the adsorption isotherm of methylene blue from aqueous solutions on CAN-9 in the linear coordinates of the Langmuir model is a straight line (R = 0.99427) and is of the Langmuir type. The kinetics of adsorption of methylene blue on CAN-9, measured at two initial concentrations, showed an increase in Kint and C values with the increase of the initial concentrations. The process of intra-particular diffusion occurs in only one stage and takes place in the mesopores.

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Absorption of methylene blue from aqueous solutions on activated coal CAN-9: kinetics and equilibrium studies

Tudor Lupascu / Mihail Ciobanu / Elena Culighin

The adsorption of methylene blue and the kinetics of adsorption of aqueous solutions on activated carbon CAN-9, obtained from walnut shells by chemical activation with orthophosphoric acid were studied. It has been shown that the adsorption isotherm of methylene blue from aqueous solutions on CAN-9 in the linear coordinates of the Langmuir model is a straight line (R = 0.99427) and is of the Langmuir type. The kinetics of adsorption of methylene blue on CAN-9, measured at two initial concentrations, showed an increase in Kint and C values with the increase of the initial concentrations. The process of intra-particular diffusion occurs in only one stage and takes place in the mesopores.

Absorption of methylene blue from aqueous solutions on activated coal CAN-9: kinetics and equilibrium studies

Tudor Lupascu / Mihail Ciobanu / Elena Culighin

The adsorption of methylene blue and the kinetics of adsorption of aqueous solutions on activated carbon CAN-9, obtained from walnut shells by chemical activation with orthophosphoric acid were studied. It has been shown that the adsorption isotherm of methylene blue from aqueous solutions on CAN-9 in the linear coordinates of the Langmuir model is a straight line (R = 0.99427) and is of the Langmuir type. The kinetics of adsorption of methylene blue on CAN-9, measured at two initial concentrations, showed an increase in Kint and C values with the increase of the initial concentrations. The process of intra-particular diffusion occurs in only one stage and takes place in the mesopores.

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Titel:

Absorption of methylene blue from aqueous solutions on activated coal CAN-9: kinetics and equilibrium studies

Beteiligte:

Tudor Lupascu (Autor:in) / Mihail Ciobanu (Autor:in) / Elena Culighin (Autor:in)

Erschienen in:

Romanian Journal of Ecology & Environmental Chemistry, Vol 4, Iss 1, Pp 22-28 (2022)

Erscheinungsdatum:

2022

ISSN:

2668-5418 , 2668-8530

Medientyp:

Aufsatz (Zeitschrift)

Format:

Elektronische Ressource

Sprache:

Unbekannt

Schlagwörter:

methylene blue , activated carbon , adsorption kinetics , adsorption in static conditions , Chemistry , QD1-999 , Ecology , QH540-549.5

Metadata by DOAJ is licensed under CC BY-SA 1.0

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