Adsorption of aniline from aqueous solution using graphene oxide-modified attapulgite composites

Adsorption is an efficient treatment method for aniline removal in water treatment. In this work, the composites of graphene oxide-modified attapulgite were prepared and used firstly to remove aniline from wastewater. The composites were characterized by Fourier transformed infrared, Brunauer-Emmett...

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Bibliographic Details
Published in:RSC advances 2018-01, Vol.8 (41), p.23382-23389
Main Authors: Deng, Qiulin, Chen, Chong, Lei, Qin, Liang, Jianhao, Zhang, Tinghong, Jiang, Jinlong
Format: Article
Language:English
Subjects:
Adsorption
Aniline
Chemistry
Composite materials
Graphene
Hydrogen bonds
Infrared analysis
Scanning electron microscopy
Wastewater treatment
Water treatment
X-ray diffraction
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Summary:Adsorption is an efficient treatment method for aniline removal in water treatment. In this work, the composites of graphene oxide-modified attapulgite were prepared and used firstly to remove aniline from wastewater. The composites were characterized by Fourier transformed infrared, Brunauer-Emmett-Teller, scanning electron microscopy and X-ray diffraction analysis. The effects of initial concentration, time, temperature and pH value on adsorption of aniline on graphene oxide-modified attapulgite are investigated. pH and temperature are found to have a significant influence on the adsorption amount. The experimental results showed that graphene oxide-modified attapulgite possesses strong adsorption ability for aniline with hydrogen bond interaction. The saturated adsorption amount could reach up to 90 mg g −1 at pH = 2-4. The Langmuir isotherm is found to describe well the equilibrium adsorption data. Finally, graphene oxide-modified attapulgite is also observed to possess excellent reusability. Adsorption is an efficient treatment method for aniline removal in water treatment.
ISSN:2046-2069
2046-2069
DOI:10.1039/c8ra04143a