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Desalination and Water Treatment Volume 57, 2016 - Issue 29
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Articles

Synthesis of a carbon@Rectorite nanocomposite adsorbent by a hydrothermal carbonization process and their application in the removal of methylene blue and neutral red from aqueous solutions

Huang YangSchool of Environmental Engineering and Resources, Southwest University of Science and Technology, Mianyang621010, China, Tel./Fax: +86 816 6089453;Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Mianyang621010, China, Tel. +86 816 2419223; Fax: +86 816 2419492Correspondence[email protected]
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Liu WeijunSchool of Environmental Engineering and Resources, Southwest University of Science and Technology, Mianyang621010, China, Tel./Fax: +86 816 6089453Correspondence[email protected]
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Wang WeiqingSchool of Environmental Engineering and Resources, Southwest University of Science and Technology, Mianyang621010, China, Tel./Fax: +86 816 6089453;Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Mianyang621010, China, Tel. +86 816 2419223; Fax: +86 816 2419492Correspondence[email protected]
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Feng QimingSchool of Environmental Engineering and Resources, Southwest University of Science and Technology, Mianyang621010, China, Tel./Fax: +86 816 6089453;Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Mianyang621010, China, Tel. +86 816 2419223; Fax: +86 816 2419492Correspondence[email protected]
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Liu JingSchool of Environmental Engineering and Resources, Southwest University of Science and Technology, Mianyang621010, China, Tel./Fax: +86 816 6089453;Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Mianyang621010, China, Tel. +86 816 2419223; Fax: +86 816 2419492Correspondence[email protected]
Pages 13573-13585 | Received 04 Jan 2015, Accepted 28 May 2015, Published online: 03 Aug 2015
 
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Abstract

Carbon@REC nanocomposite (C@REC) was synthesized by a hydrothermal carbonization process, and characterized by XRD, Fourier transform infrared spectroscopy, thermal gravimetric analysis, SEM, nitrogen adsorption–desorption measurements, and zeta potential analysis. The adsorption property of the C@REC was investigated as a function of pH of solution, adsorbent dosage, contact time, and initial concentration of MB and NR. The results suggest that amorphous carbon supported on the surface of rectorite. The adsorption experiment showed that adsorption kinetics of MB and NR onto the followed the pseudo-second-order kinetic model. The adsorption isotherm data were fitted well to the Langmuir isotherm. The adsorption capacities for the removal of MB and NR on the C@REC determined using the Langmuir equation were 15.68 and 20.30 mg g−1, respectively.

Acknowledgements

This work was supported by National Natural Science Foundation of China (50804039) and Educatiional commission of Sichuan Province of China (14ZB0106).

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