Skip to main content
Journal cover image

Preparation of regenerable granular carbon nanotubes by a simple heating-filtration method for efficient removal of typical pharmaceuticals

Publication ,  Journal Article
Shan, D; Deng, S; Zhao, T; Yu, G; Winglee, J; Wiesner, MR
Published in: Chemical Engineering Journal
June 15, 2016

A simple and convenient method was used to prepare novel granular carbon nanotubes (CNTs) for enhanced adsorption of pharmaceuticals. By heating CNTs powder at 450 °C in air, followed by filtration, the obtained granular adsorbent exhibited high surface area and pore volume since the heating process produced some oxygen-containing functional groups on CNT surface, making CNTs more dispersible in the formation of granular cake. The porous granular CNTs not only had more available surfaces for adsorption but also were more easily separated from solution than pristine CNTs (p-CNTs) powder. This adsorbent exhibited relatively fast adsorption for carbamazepine (CBZ), tetracycline (TC) and diclofenac sodium (DS), and the maximum adsorption capacity on the granular CNTs was 369.5 μmol/g for CBZ, 284.2 μmol/g for TC and 203.1 μmol/g for DS according to the Langmuir fitting, increasing by 42.4%, 37.8% and 38.0% in comparison with the pristine CNTs powder. Moreover, the spent granular CNTs were successfully regenerated at 400 °C in air without decreasing the adsorption capacity in five regeneration cycles. The adsorbed CBZ and DS were completely degraded, while the adsorbed TC was partially oxidized and the residual was favorable for the subsequent adsorption. This research develops an easy method to prepare and regenerate granular CNT adsorbent for the enhanced removal of organic pollutants from water or wastewater.

Duke Scholars

Published In

Chemical Engineering Journal

DOI

ISSN

1385-8947

Publication Date

June 15, 2016

Volume

294

Start / End Page

353 / 361

Related Subject Headings

  • Chemical Engineering
  • 4016 Materials engineering
  • 4011 Environmental engineering
  • 4004 Chemical engineering
  • 0907 Environmental Engineering
  • 0905 Civil Engineering
  • 0904 Chemical Engineering
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Shan, D., Deng, S., Zhao, T., Yu, G., Winglee, J., & Wiesner, M. R. (2016). Preparation of regenerable granular carbon nanotubes by a simple heating-filtration method for efficient removal of typical pharmaceuticals. Chemical Engineering Journal, 294, 353–361. https://doi.org/10.1016/j.cej.2016.02.118
Shan, D., S. Deng, T. Zhao, G. Yu, J. Winglee, and M. R. Wiesner. “Preparation of regenerable granular carbon nanotubes by a simple heating-filtration method for efficient removal of typical pharmaceuticals.” Chemical Engineering Journal 294 (June 15, 2016): 353–61. https://doi.org/10.1016/j.cej.2016.02.118.
Shan D, Deng S, Zhao T, Yu G, Winglee J, Wiesner MR. Preparation of regenerable granular carbon nanotubes by a simple heating-filtration method for efficient removal of typical pharmaceuticals. Chemical Engineering Journal. 2016 Jun 15;294:353–61.
Shan, D., et al. “Preparation of regenerable granular carbon nanotubes by a simple heating-filtration method for efficient removal of typical pharmaceuticals.” Chemical Engineering Journal, vol. 294, June 2016, pp. 353–61. Scopus, doi:10.1016/j.cej.2016.02.118.
Shan D, Deng S, Zhao T, Yu G, Winglee J, Wiesner MR. Preparation of regenerable granular carbon nanotubes by a simple heating-filtration method for efficient removal of typical pharmaceuticals. Chemical Engineering Journal. 2016 Jun 15;294:353–361.
Journal cover image

Published In

Chemical Engineering Journal

DOI

ISSN

1385-8947

Publication Date

June 15, 2016

Volume

294

Start / End Page

353 / 361

Related Subject Headings

  • Chemical Engineering
  • 4016 Materials engineering
  • 4011 Environmental engineering
  • 4004 Chemical engineering
  • 0907 Environmental Engineering
  • 0905 Civil Engineering
  • 0904 Chemical Engineering