Abstract

In this study, nanoscale zero-valent iron nanoparticles (NZVIs) were coated with silica and polydopamine using a two-step process. The coated nanoparticles were applied as adsorbents for removal of two common polycyclic aromatic hydrocarbons pollutants, phenanthrene (PHE) and anthracene (ANT) from aqueous system. Adsorption kinetics followed a pseudo-second-order model. Isotherms and thermodynamics were investigated and the results indicated that the adsorption process fit best to the Freundlich model and exhibited the characteristics of an exothermal physical adsorption process. Owing to their superparamagnetic characteristics and stability, these adsorbents could be easily collected and recycled for reuse.

Details

Title
Recyclable nanoscale zero-valent iron-based magnetic polydopamine coated nanomaterials for the adsorption and removal of phenanthrene and anthracene
Author
Li, Jing 1 ; Zhou, Qingxiang 1 ; Liu, Yongli 1 ; Man, Lei 1 

 Beijing Key Laboratory of Oil and Gas Pollution Control, China University of Petroleum Beijing, Beijing, P.R. China 
End page
16
Publication year
2017
Publication date
Dec 2017
Publisher
Taylor & Francis Ltd.
ISSN
14686996
e-ISSN
18785514
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2196547281
Copyright
© 2017 The Author(s). Published by National Institute for Materials Science in partnership with Taylor & Francis. This work is licensed under the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.