Ceo2-covered nanofiber for highly effieient removal of phosphorous from acqueous solution

Title
Ceo2-covered nanofiber for highly effieient removal of phosphorous from acqueous solution
Authors
고영건도태구전영상김충현최웅수김재용
Keywords
Nanofiber; Phosphate removal; Adsorbent; CeO2; CePO4
Issue Date
2016-01
Publisher
Journal of hazardous materials
Citation
VOL 307, 91-98
Abstract
The lowering phosphorus concentration of lakes or rivers using adsorbents has been considered to be the most effective way to prevent water eutrophication. However, the development of an adsorbent is still challenging because conventional adsorbents have not shown a sufficient phosphorus adsorption capacity (0.3-2.0mmol/g) to treat industrial, agricultural or domestic wastewater at a large scale. Herein, a novel and effective strategy to remove phosphorus efficiently with a CeO2-covered nanofiber is shown. The CeO2-covered nanofiber was synthesized through (1) amine group immobilization onto an electrospun polyacrylonitrile nanofiber and (2) adsorption of Ce(3+) on it. The CeO2-covered nanofiber played a role in catching phosphate ions in an aqueous solution by the oxidation, reduction, and ion-exchange of adsorbed Ce(3+) on the nanofiber from CeO2 to CePO4, and enabled remarkable phosphate adsorption capacity of the nanofiber (ca. 17.0mmol/g) at the range of ca. pH 2-6. Our strategy might be the most feasible method to efficiently lower the phosphorus concentration in lakes or rivers owing to the easy and inexpensive preparation of CeO2-covered nanofiber at an industrial scale, with a high phosphate adsorption capacity.
URI
http://pubs.kist.re.kr/handle/201004/58443
ISSN
03043894
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KIST Publication > Article
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