Absorption of methylene blue from aqueous solutions on activated coal CAN-9: kinetics and equilibrium studies
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...
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| Format: | Article |
| Language: | English |
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Estfalia
2022-06-01
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| Series: | Romanian Journal of Ecology & Environmental Chemistry |
| Subjects: | |
| Online Access: | http://www.rjeec.ro/Read/144?id=Absorption%20of%20methylene%20blue%20from%20aqueous%20solutions%20on%20activated%20coal%20CAN-9%3A%20kinetics%20and%20equilibrium%20studies |
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| author | Tudor Lupascu Mihail Ciobanu Elena Culighin |
| author_facet | Tudor Lupascu Mihail Ciobanu Elena Culighin |
| author_sort | Tudor Lupascu |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T07:46:43Z |
| format | Article |
| id | doaj.art-ad6e1b19690d49dc97b83324eab5b78a |
| institution | Directory Open Access Journal |
| issn | 2668-5418 2668-8530 |
| language | English |
| last_indexed | 2024-03-10T07:46:43Z |
| publishDate | 2022-06-01 |
| publisher | Estfalia |
| record_format | Article |
| series | Romanian Journal of Ecology & Environmental Chemistry |
| spelling | doaj.art-ad6e1b19690d49dc97b83324eab5b78a2023-11-22T12:37:36ZengEstfaliaRomanian Journal of Ecology & Environmental Chemistry2668-54182668-85302022-06-01412228https://doi.org/10.21698/rjeec.2022.102Absorption of methylene blue from aqueous solutions on activated coal CAN-9: kinetics and equilibrium studiesTudor Lupascu0Mihail Ciobanu1Elena Culighin2Institute of Chemistry, ChisinauInstitute of Chemistry, ChisinauInstitute of Chemistry, ChisinauThe 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.http://www.rjeec.ro/Read/144?id=Absorption%20of%20methylene%20blue%20from%20aqueous%20solutions%20on%20activated%20coal%20CAN-9%3A%20kinetics%20and%20equilibrium%20studiesmethylene blueactivated carbonadsorption kineticsadsorption in static conditions |
| spellingShingle | Tudor Lupascu Mihail Ciobanu Elena Culighin Absorption of methylene blue from aqueous solutions on activated coal CAN-9: kinetics and equilibrium studies Romanian Journal of Ecology & Environmental Chemistry methylene blue activated carbon adsorption kinetics adsorption in static conditions |
| title | Absorption of methylene blue from aqueous solutions on activated coal CAN-9: kinetics and equilibrium studies |
| title_full | Absorption of methylene blue from aqueous solutions on activated coal CAN-9: kinetics and equilibrium studies |
| title_fullStr | Absorption of methylene blue from aqueous solutions on activated coal CAN-9: kinetics and equilibrium studies |
| title_full_unstemmed | Absorption of methylene blue from aqueous solutions on activated coal CAN-9: kinetics and equilibrium studies |
| title_short | Absorption of methylene blue from aqueous solutions on activated coal CAN-9: kinetics and equilibrium studies |
| title_sort | absorption of methylene blue from aqueous solutions on activated coal can 9 kinetics and equilibrium studies |
| topic | methylene blue activated carbon adsorption kinetics adsorption in static conditions |
| url | http://www.rjeec.ro/Read/144?id=Absorption%20of%20methylene%20blue%20from%20aqueous%20solutions%20on%20activated%20coal%20CAN-9%3A%20kinetics%20and%20equilibrium%20studies |
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