dc.contributor.authors |
Gundogdu, Ali; Bozbeyoglu, Pinar; Imamoglu, Mustafa; Baltaci, Cemalettin; Duran, Celal; Bulut, Volkan N. |
|
dc.date.accessioned |
2022-12-20T13:25:09Z |
|
dc.date.available |
2022-12-20T13:25:09Z |
|
dc.date.issued |
2022 |
|
dc.identifier.issn |
0003-2719 |
|
dc.identifier.uri |
http://dx.doi.org/10.1080/00032719.2022.2098310 |
|
dc.identifier.uri |
https://hdl.handle.net/20.500.12619/99220 |
|
dc.description |
Bu yayının lisans anlaşması koşulları tam metin açık erişimine izin vermemektedir. |
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dc.description.abstract |
A promising new activated carbon (AC) was produced from corncobs (CCs) by boric acid-based chemical activation to remove methylene blue (MB) as an organic pollutant and cadmium ions (Cd2+) as an inorganic pollutant from aqueous solutions. After the produced activated carbon (CCs-AC) was characterized, the adsorption mechanism of CCs-AC, which is one of the most interesting topics in the literature, was the primarily focus. The possible adsorption mechanisms of Cd2+ and MB on CCs-AC from aqueous solutions are discussed with respect to pH, thermodynamic values, and regeneration parameters. The results show that the adsorption of Cd2+ on CCs-AC was favorable at pH values higher than 4. In contrast, the adsorption process was almost pH-independent for MB. Variation of pH showed that the adsorption of Cd2+ on CCs-AC primarily occurs by electrostatic interaction. However, MB adsorption may also involve pi-pi dispersion forces and partial hydrogen bonding. The Cd2+ adsorbed on CCs-AC was quantitatively desorbed by HCl, whereas MB was not desorbed quantitatively by any solution. While a temperature increase has a positive effect on the adsorption of both methylene blue and Cd2+, the thermodynamic results show that MB adsorption is primarily chemisorption (Delta H of 24.28 kJ/mole), while Cd2+ adsorption is mostly physisorption (Delta H of 7.20 kJ/mole). Using Langmuir adsorption isotherms, the MB adsorption capacity of CCs-AC, which primarily has a microporous structure, was 0.88 mmol/g, while the Cd2+ adsorption capacity was 1.28 mmol/g. |
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dc.language |
English |
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dc.language.iso |
eng |
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dc.relation.isversionof |
10.1080/00032719.2022.2098310 |
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dc.subject |
Chemistry |
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dc.subject |
Adsorption mechanism |
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dc.subject |
cadmium(II) (Cd2+) |
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dc.subject |
corncob activated carbon |
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dc.subject |
methylene blue |
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dc.title |
Characterization of the Adsorption Mechanism of Cadmium(II) and Methylene Blue upon Corncobs Activated Carbon |
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dc.type |
Early Access |
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dc.contributor.authorID |
duran, celal/0000-0002-1306-9061 |
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dc.relation.journal |
ANALYTICAL LETTERS |
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dc.identifier.doi |
10.1080/00032719.2022.2098310 |
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dc.identifier.eissn |
1532-236X |
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dc.contributor.author |
Gundogdu, Ali |
|
dc.contributor.author |
Bozbeyoglu, Pinar |
|
dc.contributor.author |
Imamoglu, Mustafa |
|
dc.contributor.author |
Baltaci, Cemalettin |
|
dc.contributor.author |
Duran, Celal |
|
dc.contributor.author |
Bulut, Volkan N. |
|
dc.relation.publicationcategory |
Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı |
|