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Development of modified mesoporous carbon (CMK-3) for improved adsorption of bisphenol-A.

Authors
  • Jeong, Yunjae1
  • Cui, Mingcan1
  • Choi, Jongbok1
  • Lee, Yonghyeon1
  • Kim, Jeonggwan2
  • Son, Younggyu3
  • Khim, Jeehyeong4
  • 1 School of Civil, Environmental, and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea. , (North Korea)
  • 2 Korea Environmental Industry and Technology, 215 Jinheung-no, Eunpyeong-gu, Seoul, 03367, Republic of Korea. , (North Korea)
  • 3 Department of Environmental Engineering, Kumoh National Institute of Technology, 61, Daehak-ro, Gumi, Gyeongsangbuk-do, 39177, Republic of Korea. , (North Korea)
  • 4 School of Civil, Environmental, and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea. Electronic address: [email protected] , (North Korea)
Type
Published Article
Journal
Chemosphere
Publication Date
Jan 01, 2020
Volume
238
Pages
124559–124559
Identifiers
DOI: 10.1016/j.chemosphere.2019.124559
PMID: 31446279
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

The adsorption of bisphenol-A (BPA) on ordered mesoporous carbon (CMK-3) and modified CMK-3 (MCMK-3) for decontamination of aqueous medium was investigated. The CMK-3 and MCMK-3 materials had uniform pore sizes of 3.60 and 3.70 nm and high Brunauer-Emmett-Teller (BET) surface areas of 751 and 564 m2 g-1, respectively. The maximum adsorption capacities of CMK-3 and MCMK-3 were 178.57 (0.24 mg m-2) and 238.01 (0.42 mg m-2) mg g-1, respectively at 298 K (pH 6.4). The difference in the adsorption capacities is attributed to the specific surface area and hydrophobicity of the adsorbents. The adsorption of BPA on CMK-3 and MCMK-3 may be influenced by π-π bonding and hydrophobic and electrostatic interactions, and the excellent adsorption capacity of MCMK-3 is attributed to its unique sp2-hybridized single-atom-layer structure. The kinetics and isotherm data were described by the pseudo-second order kinetic model and the Langmuir isotherm, respectively. This difference in the adsorption kinetics of CMK-3 and MCMK-3 is caused by the increase in the pore diameter of the latter. Further, CMK-3 and MCMK-3, with an open geometry consisting of interlinked nanorods, allow for faster intraparticle diffusion. Overall, CMK-3 and MCMK-3 could be promising adsorbents for the removal of chemicals containing benzene rings from wastewater. Copyright © 2019. Published by Elsevier Ltd.

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