Type

Journal Article

Authors

John H.T. Luong
Brett Paull
Dermot Brabazon
Pavel Nesterenko
Keith B. Male
Xiaoyun He

Subjects

Chemistry

Topics
first order carbon cellulose second order adsorption nanocrystalline cellulose activated carbon kinetics methylene blue chemistry desorption carbon material carbon monolith gibbs free energy

Adsorption and desorption of methylene blue on porous carbon monoliths and nanocrystalline cellulose (2013)

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.
Collections Ireland -> Dublin City University -> Publication Type = Article
Ireland -> Dublin City University -> Subject = Physical Sciences: Chemistry
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> Subject = Physical Sciences
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: Irish Separation Science Cluster (ISSC)

Full list of authors on original publication

John H.T. Luong, Brett Paull, Dermot Brabazon, Pavel Nesterenko, Keith B. Male, Xiaoyun He

Experts in our system

1
John H T Luong
University College Cork
Total Publications: 36
 
2
Brett Paull
Dublin City University
Total Publications: 120
 
3
Dermot Brabazon
Dublin City University
Total Publications: 162
 
4
Pavel N Nesterenko
Dublin City University
Total Publications: 41