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Citation
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HERO ID
1807699
Reference Type
Journal Article
Title
Adsorption of Cr(VI) using synthetic poly(m-phenylenediamine)
Author(s)
Yu, W; Zhang, L; Wang, H; Chai, L
Year
2013
Is Peer Reviewed?
Yes
Journal
Journal of Hazardous Materials
ISSN:
0304-3894
EISSN:
1873-3336
Publisher
Elsevier
Volume
260
Issue
Elsevier
Page Numbers
789-795
Language
English
PMID
23856308
DOI
10.1016/j.jhazmat.2013.06.045
Web of Science Id
WOS:000324563500095
URL
https://linkinghub.elsevier.com/retrieve/pii/S0304389413004457
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Abstract
Poly(m-phenylenediamine) (PmPD) with different oxidation state was successfully synthesized by the improved chemically oxidative polymerization. The function of oxidation state on Cr(VI) adsorption was systematically examined through adsorption experiments. Results showed that the Cr(VI) adsorptivity of all PmPD increased with decreasing the initial pH. When the oxidation state of PmPD was dropped, the equilibrium time for Cr(VI) adsorption was obviously shortened and its Cr(VI) removal and adsorption selectivity were profoundly obviously increased. Typically, PmPD with the lowest oxidation state in this research possesses the highest Cr(VI) removal of 500mgg(-1). Moreover, PmPD with lower oxidation state displays a potentially superior prospect in Cr(VI) treatment through preliminary experiments on 5 cycles of adsorption, column adsorption and practical wastewater treatment. The possible adsorption mechanism was discussed mainly according to characterizations (FTIR, XPS) and experiments, which together suggests that the Cr(VI) adsorption most possibly involve redox reaction, chelation and doping adsorption.
Keywords
Poly(m-phenylenediamine); Oxidation state; Cr(VI); Adsorption
Tags
IRIS
•
Chromium VI
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June 2013 - January 2014
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