eCite Digital Repository
Adsorption and desorption of methylene blue on porous carbon monoliths and nanocrystalline cellulose
Citation
He, X and Male, KB and Nesterenko, PN and Brabazon, D and Paull, B and Luong, JHT, Adsorption and desorption of methylene blue on porous carbon monoliths and nanocrystalline cellulose, ACS Applied Materials and Interfaces, 5, (17) pp. 8796-8804. ISSN 1944-8244 (2013) [Refereed Article]
Copyright Statement
Copyright 2013 American Chemical Society
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.
Item Details
Item Type: | Refereed Article |
---|---|
Keywords: | varbon monolith, nanocrystalline cellulose, activated carbon, methylene blue, adsorption, desorption, kinetics |
Research Division: | Chemical Sciences |
Research Group: | Analytical chemistry |
Research Field: | Separation science |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the chemical sciences |
UTAS Author: | Nesterenko, PN (Professor Pavel Nesterenko) |
UTAS Author: | Paull, B (Professor Brett Paull) |
ID Code: | 86118 |
Year Published: | 2013 |
Web of Science® Times Cited: | 242 |
Deposited By: | Austn Centre for Research in Separation Science |
Deposited On: | 2013-08-26 |
Last Modified: | 2017-11-03 |
Downloads: | 0 |
Repository Staff Only: item control page