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Decontamination of Bisphenol A from Aqueous Solution by Graphene Adsorption

Xu, Jing, Wang, Li, Zhu, Yongfa·2012·Langmuir

Abstract

The decontamination of bisphenol A (BPA) from aqueous solution by graphene adsorption was investigated. The maximum adsorption capacity (q(m)) of graphene for BPA obtained from a Langmuir isotherm was 182 mg/g at 302.15 K, which was among the highest values of BPA adsorption compared with other carbonaceous adsorbents according to the literature. Both π-π interactions and hydrogen bonds might be responsible for the adsorption of BPA on graphene, and the excellent adsorption capacity of graphene was due to its unique sp(2)-hybridized single-atom-layer structure. Therefore, graphene could be regarded as a promising adsorbent for BPA removal in water treatment. The kinetics and isotherm data can be well described by the pseudo-second-order kinetic model and the Langmuir isotherm, respectively. The thermodynamic studies indicated that the adsorption reaction was a spontaneous and exothermic process. Besides, the presence of NaCl in the solution could facilitate the adsorption process, whereas the alkaline pH range and higher temperature of the solution were unfavorable.

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Metadata

Authors
Xu, J., Wang, L., & Zhu, Y.
Venue
Langmuir
Published
2012-05-18
Volume
28
Issue
22
Pages
8418-8425
ISSN
  • 0743-7463 (ISSN-L)
  • 1520-5827
OpenAlex
W2318841192
Cited by
832
References
1
FWCI
41.29
Type
journal article
Language
en
Open access
closed

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