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HERO ID
3843981
Reference Type
Journal Article
Title
Removal of perfluorooctanoic acid from water with economical mesoporous melamine-formaldehyde resin microsphere
Author(s)
Li, J; Li, Q; Li, LuS; Xu, Li
Year
2017
Is Peer Reviewed?
Yes
Journal
Chemical Engineering Journal
ISSN:
1385-8947
Volume
320
Page Numbers
501-509
DOI
10.1016/j.cej.2017.03.073
Web of Science Id
WOS:000401202200052
Abstract
Perfluoroalkyl and polyfluoroalkyl substances are priority contaminants of global concern. It is urgent to remove them from the environment. Adsorption is an efficient approach, but the adsorption capacity and regeneration of adsorbent were not satisfactory. In the present study, mesoporous melamine formaldehyde resin microsphere (MMFRS) was fabricated through suspension polymerization. Owing to its mesoporous property and large anion-exchange capacity of 0.3 mmol/g, MMFRS was applied to the adsorption of perfluorooctanoic acid, a model target. The sorption kinetics obeyed pseudo-second order equation and the sorption isotherms fitted both Freundlich and Langmuir models well. MMFRS exhibited a superiority over commercial powdered activated carbon on the adsorption amount. The sorption could reach equilibrium within 24 h. In addition, the material could be easily and economically regenerated by dilute NH3.H2O (7.5 mM); a regeneration percentage (>85%) after 20 recycles was obtained. This study provides a facile, environmentally-friendly and low energy-consumption strategy for removal of perfluorooctanoic acid from aqueous solution in waste-water treatment. (C) 2017 Elsevier B.V. All rights reserved.
Keywords
Melamine-formaldehyde; Microsphere; Perfluorooctanoic acid; Adsorption; Regeneration; Powdered activated carbon
Tags
PFAS
•
^Per- and Polyfluoroalkyl Substances (PFAS)
PFOA (335-67-1) and PFOS (1763-23-1)
Literature Search – Adverse outcome pathway (2015-present)
WOS
•
PFOA (335-67-1) and PFOS (1763-23-1)
Literature Search – Adverse outcome pathway (2015-present)
WOS
Screening Results
Excluded/Not on Topic
Literature Search Update (2013-2019)
WOS
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