Impregnation of multiwall carbon nanotubes in alginate beads dramatically enhances their adsorptive ability to aqueous methylene blue

Impregnation of multiwall carbon nanotubes in alginate beads dramatically enhances their adsorptive ability to aqueous methylene blue

Bing Wang; Bin Gao; Andrew R.Zimmerman; Xinqing Lee

2018

Source Publication

Chemical Engineering Research & Design

Volume

133 Pages:235-242

Abstract

In this work, novel environmentally benign nanocomposites, carboxyl functionalized multiwall carbon nanotubes (MWCNT-COOH) impregnated into calcium-alginate (CA) beads (CA-MWCNT-COOH), were tested for their abilities to remove a common dye contaminant, methylene blue (MB), from aqueous solution. Kinetic studies showed that the adsorption process of CA-MWCNT-COOH had similar speed to that of CA beads but was slower than that of undispersed MWCNT-COOH. With a Langmuir maximum MB adsorption capacity of 1189 mg g(-1), the CA-MWCNT-COOH performed best, outperforming both CA beads alone (1144.7 mg g(-1)) and the undispersed MWCNT-COON (33.4 mg g(-1)). Furthermore, the impregnation also dramatically enhanced the adsorption of MB onto other types of MWCNTs, indicating CA beads are an excellent supporting material to disperse and stabilize carbon nanotubes for their optimal application as a high-capacity adsorbent.

Keyword

Nanocomposites carbon Nanotubes sorbents contaminant Removal adsorption

Indexed By

SCI

Language

英语

Document Type

期刊论文

Identifier

http://ir.gyig.ac.cn/handle/42920512-1/8768

Collection

环境地球化学国家重点实验室

Affiliation

1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
2.Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA
3.Puding Karst Ecosystem Research Station, State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Puding, 562100, China
4.Department of Geological Sciences, University of Florida, Gainesville, FL 32611, USA

Recommended Citation
GB/T 7714

Bing Wang；Bin Gao；Andrew R.Zimmerman；Xinqing Lee. Impregnation of multiwall carbon nanotubes in alginate beads dramatically enhances their adsorptive ability to aqueous methylene blue[J]. Chemical Engineering Research & Design,2018,133:235-242.

APA

Bing Wang；Bin Gao；Andrew R.Zimmerman；Xinqing Lee.(2018).Impregnation of multiwall carbon nanotubes in alginate beads dramatically enhances their adsorptive ability to aqueous methylene blue.Chemical Engineering Research & Design,133,235-242.

MLA

Bing Wang；Bin Gao；Andrew R.Zimmerman；Xinqing Lee."Impregnation of multiwall carbon nanotubes in alginate beads dramatically enhances their adsorptive ability to aqueous methylene blue".Chemical Engineering Research & Design 133(2018):235-242.

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