Simultaneous removal of phosphate and nitrate in wastewater using high-capacity anion-exchange resin

Title
Simultaneous removal of phosphate and nitrate in wastewater using high-capacity anion-exchange resin
Authors
김연석이영행안병렬최성아박종훈정종수이상협최재우
Keywords
Anion exchange resin; Nitrate; Phosphate; Wastewater
Issue Date
2012-11
Publisher
Water, air, and soil pollution
Citation
VOL 223, NO 9, 5959-5966
Abstract
The removal of nutrients in wastewater is a critical issue in water treatment because released nutrients can cause serious adverse effects in water systems or the aquatic environment. In this study, a high-performing polymeric anion exchange resin was developed for removal of nutrients from wastewater. The resins were prepared by chloromethylation followed by amination under preferred conditions. The resins were investigated for the removal of nutrients such as phosphate, nitrate, and fluoride from water. The density of functional groups on the synthesized resin was approximately 33 % higher than on commercialized resins, and the specific surface area of synthesized resin was increased by approximately 10-fold compared with commercialized resins. The adsorption capacity of synthesized resins (AMP16-FeCl3) for anions was 285.8 mg/g, which was approximately three times higher than the capacity of commercialized resin (AMP16-OH). A study of the effects of the types of counter ions and functional groups found that resins having hydroxide ion as a counter ion showed higher capacity and selectivity for phosphate ion and that dimethylethanolamine as a resin functional group of resin was more efficient than trimethylamine.
URI
http://pubs.kist.re.kr/handle/201004/43048
ISSN
00496979
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KIST Publication > Article
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