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Polymers 2017, 9(1), 5; doi:10.3390/polym9010005

Rapid and Effective Removal of Cu2+ from Aqueous Solution Using Novel Chitosan and Laponite-Based Nanocomposite as Adsorbent

1
School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
2
State Key Laboratory of Offshore Oil Exploitation, Beijing 100027, China
3
CNOOC Research Institute, Beijing 100027, China
*
Authors to whom correspondence should be addressed.
Academic Editors: Joannis K. Kallitsis, Georgios Bokias and Valadoula Deimede
Received: 8 October 2016 / Revised: 11 December 2016 / Accepted: 21 December 2016 / Published: 27 December 2016
(This article belongs to the Special Issue Hybrid Polymeric Materials)
View Full-Text   |   Download PDF [3660 KB, uploaded 27 December 2016]   |  

Abstract

In this paper, a novel method for preparing nanoparticle-polymer hybrid adsorbent was established. Laponite was dispersed in distilled water to form Laponite nanoparticles. These nanoparticles were pre-adsorbed by 2-acrylamido-2-methylpropane-sulfonic acid (AMPS) to improve their dispersion stability in chitosan solution. The nanoparticle-polymer hybrid adsorbent was prepared by copolymerization of chitosan, acrylamide, acrylic acid, AMPS, and Laponite nanoparticles. Four adsorbents were obtained and characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller adsorption (BET). Additionally, the uptake capacities of Cu2+ using different samples were studied. Compared to the adsorbent without chitosan and Laponite components, the maximum uptake of the hybrid adsorbent increased from 0.58 to 1.28 mmol·g−1 and the adsorption equilibrium time of it decreased from more than 75 min to less than 35 min, which indicated that the addition of chitosan and Laponite could greatly increase the adsorption rate and capacity of polymer adsorbent. The effects of different experimental parameters—such as initial pH, temperature, and equilibrium Cu2+ concentration—on the adsorption capacities were studied. Desorption study indicated that this hybrid adsorbent was easy to be regenerated. View Full-Text
Keywords: heavy metal removal; nanoparticle-polymer hybrids; Laponite; biosorbent; rapid adsorption heavy metal removal; nanoparticle-polymer hybrids; Laponite; biosorbent; rapid adsorption
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Cao, J.; Cao, H.; Zhu, Y.; Wang, S.; Qian, D.; Chen, G.; Sun, M.; Huang, W. Rapid and Effective Removal of Cu2+ from Aqueous Solution Using Novel Chitosan and Laponite-Based Nanocomposite as Adsorbent. Polymers 2017, 9, 5.

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