Mesoporous activated carbon prepared from macadamia nut shell waste by carbon dioxide activation: comparative characterisation and study of methylene blue removal from aqueous solution
Article
Article Title | Mesoporous activated carbon prepared from macadamia nut |
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ERA Journal ID | 3941 |
Article Category | Article |
Authors | Wongcharee, Surachai (Author), Aravinthan, Vasantha (Author), Erdei, Laszlo (Author) and Sanongraj, Wipada (Author) |
Journal Title | Asia Pacific Journal of Chemical Engineering |
Journal Citation | 13 (2) |
Article Number | e2179 |
Number of Pages | 16 |
Year | 2018 |
Place of Publication | United Kingdom |
ISSN | 0969-1855 |
1932-2135 | |
1932-2143 | |
Digital Object Identifier (DOI) | https://doi.org/10.1002/apj.2179 |
Web Address (URL) | http://onlinelibrary.wiley.com/doi/10.1002/apj.2179/full |
Abstract | Activated carbons are the most widely used adsorbents; however, producing high‐performance mesoporous activated carbons with simple technology still remains a challenge. In this research, waste macadamia nut shell (MNS) was explored as precursor for preparing mesoporous activated carbons by carbon dioxide activation. The material characteristics of MNS‐based activated carbon (MAC) were thoroughly examined in comparison with a premium‐grade commercial activated carbon (CAC). MAC and CAC had specific surface areas of 830 and 1,299 m2 g−1, respectively. Although CAC had a predominantly microporous structure, about 74% of the pore volume of MAC is composed of mesopores. Adsorption performances were evaluated in batch experiments using methylene blue model pollutant and demonstrated 135 and 181 mg g−1 saturation capacities for MAC and CAC, respectively. Non‐linear regression found that the fractal‐like pseudo first‐order model accurately described sorption kinetics, and intraparticle diffusion was the rate‐limiting step. Among 6 established isotherm models, the Liu equilibrium model showed the best statistics. Thermodynamic analysis verified that the process was favourable and involved physisorption. These results show that valuable mesoporous activated carbons can be prepared from the biowaste MNS with simple production technology to suit environmental and industrial applications. |
Keywords | adsorption, macadamia nut shell, mesoporous activated carbon, methylene blue, non‐linear modelling |
ANZSRC Field of Research 2020 | 401699. Materials engineering not elsewhere classified |
400411. Water treatment processes | |
410404. Environmental management | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | School of Civil Engineering and Surveying |
Ubon Ratchathani University, Thailand | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4925/mesoporous-activated-carbon-prepared-from-macadamia-nut-shell-waste-by-carbon-dioxide-activation-comparative-characterisation-and-study-of-methylene-blue-removal-from-aqueous-solution
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