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Adsorption characteristics of tetrabromobisphenol A onto sodium bisulfite reduced graphene oxide aerogels.
- Source :
-
Colloids & Surfaces A: Physicochemical & Engineering Aspects . Feb2018, Vol. 538, p781-788. 8p. - Publication Year :
- 2018
-
Abstract
- Adsorbent 3-D sodium bisulfite reduced-graphene aerogels (S-rGA) were fabricated via the reduction of graphene oxide. It has high adsorption capacity and excellent reusability for the removal of tetrabromobisphenol A (TBBPA). S-rGA with its unique block and porous network structure was characterized using scanning Electron Microscopy (SEM) and Brunauer-Emmett-Teller (BET) analysis. The adsorption characteristics of S-rGA to TBBPA were investigated through batch experiments. In the study, the adsorption kinetics were well described by the pseudo-second-order model. The adsorption equilibrium well fit to the Langmuir model with maximum adsorption capacity of 128.37 mg/g. Thermodynamic parameters suggested that the adsorption of TBBPA was exothermic and spontaneous. Fourier transformed infrared (FTIR) spectra indicated that π π interaction might be consistent with the adsorption of TBBPA by S-rGA. Furthermore, reuse experiments indicated that S-rGA could be regenerated five times with only a slight loss in adsorption capacity. These results demonstrated that S-rGA is potentially an ideal adsorbents for enhancing the adsorption capacity of TBBPA in aqueous environments. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SODIUM bisulfite
*GRAPHENE oxide
*BISPHENOL A
*AEROGELS
*CHEMICAL reduction
Subjects
Details
- Language :
- English
- ISSN :
- 09277757
- Volume :
- 538
- Database :
- Academic Search Index
- Journal :
- Colloids & Surfaces A: Physicochemical & Engineering Aspects
- Publication Type :
- Academic Journal
- Accession number :
- 126943897
- Full Text :
- https://doi.org/10.1016/j.colsurfa.2017.11.070