Issue 1, 2015

Study of chromium(vi) removal from aqueous solution using nitrogen-enriched activated carbon based bamboo processing residues

Abstract

Nitrogen functional groups were introduced by urea and melamine onto the surface of two bamboo processing residues derived activated carbons (ACs) and Cr(VI) adsorption was investigated by changing various parameters. The results suggested that the incorporation of nitrogen species caused a visible increase in the adsorption capacity. The ACs with melamine and urea modification showed that the maximum removal of Cr(VI) from the solution having an initial Cr(VI) concentration of 100 mg L−1 was obtained at pH 2.0 as 89% and 85%, respectively. The adsorption capacity of Cr(VI) for unmodified AC was 78%. Langmuir adsorption model was applied to experimental equilibrium data of Cr(VI) adsorption and the adsorption kinetic followed pseudo-second-order model for these two ACs. Besides, the intraparticle diffusion kinetic model suggested the Cr(VI) adsorption could be divided into two phases: the diffusion controlled by external surface followed by an intra-particle diffusion.

Graphical abstract: Study of chromium(vi) removal from aqueous solution using nitrogen-enriched activated carbon based bamboo processing residues

Article information

Article type
Paper
Submitted
23 Sep 2014
Accepted
03 Nov 2014
First published
04 Nov 2014

RSC Adv., 2015,5, 784-790

Author version available

Study of chromium(VI) removal from aqueous solution using nitrogen-enriched activated carbon based bamboo processing residues

J. Zhang, T. Shang, X. Jin, J. Gao and Q. Zhao, RSC Adv., 2015, 5, 784 DOI: 10.1039/C4RA11016A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements