Download | - View accepted manuscript: Adsorption and desorption of Methylene blue on porous Carbon monoliths and nanocrystalline cellulose (PDF, 1.5 MiB)
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DOI | Resolve DOI: https://doi.org/10.1021/am403222u |
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Author | Search for: He, Xiaoyun; Search for: Male, Keith B.1; Search for: Nesterenko, Pavel N.; Search for: Brabazon, Dermot; Search for: Paull, Brett; Search for: Luong, John H. T.1 |
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Affiliation | - National Research Council of Canada. Aquatic and Crop Resource Development
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Format | Text, Article |
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Subject | activated carbon; adsorption; carbon monolith; desorption; kinetics; methylene blue; nanocrystalline cellulose |
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Abstract | The dynamic batch adsorption of methylene blue (MB), a widely used and toxic dye, onto nanocrystalline cellulose (NCC) and crushed powder of carbon monolith (CM) was investigated using the pseudo-first- and -second-order kinetics. CM outperformed NCC with a maximum capacity of 127 mg/g compared to 101 mg/g for NCC. The Langmuir isotherm model was applicable for describing the binding data for MB on CM and NCC, indicating the homogeneous surface of these two materials. The Gibbs free energy of −15.22 kJ/mol estimated for CM unravelled the spontaneous nature of this adsorbent for MB, appreciably faster than the use of NCC (−4.47 kJ/mol). Both pH and temperature exhibited only a modest effect on the adsorption of MB onto CM. The desorption of MB from CM using acetonitrile was very effective with more than 94 % of MB desorbed from CM within 10 min to allow the reusability of this porous carbon material. In contrast, acetonitrile was less effective than ethanol in desorbing MB from NCC. The two solvents were incapable of completely desorbing MB on commercial granular coal-derived activated carbon. |
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Publication date | 2013-08-09 |
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Publisher | ACS Publications |
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In | |
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Language | English |
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Peer reviewed | Yes |
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NRC number | NRCC 55601 |
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NPARC number | 21268642 |
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Export citation | Export as RIS |
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Report a correction | Report a correction (opens in a new tab) |
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Record identifier | 92dadc96-875c-42db-a950-95b3cfe81f64 |
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Record created | 2013-11-05 |
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Record modified | 2020-06-04 |
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