Enhanced removal of phosphate on modified ion exchanger with competing ion

Title
Enhanced removal of phosphate on modified ion exchanger with competing ion
Authors
남주희이상협최재우홍석원안병렬
Keywords
Phosphate; Organic/inorganic ion exchanger; Selectivity; 인산염; 이온교환 수지; 선택도
Issue Date
2013-02
Publisher
상하수도학회지
Citation
VOL 27, NO 1, 121-128
Abstract
The concern for dissolved phosphate in water/wastewater has been increasing because of the risk for eutrophication. A variety of conventional and advanced technologies were applied to meet the enforced new regulation of phosphate around the world. However, there still remained a lot of challenge because most introduced/developed method, for example, biological and physic-chemical treatment is not easy to satisfy the new regulation of phosphate in water. In order to meet the new regulation, the application of ion exchanger has been tried which showed that the removal efficiency for phosphate was strongly determined by in the presence of the competing ion, especially sulfate. As results, a new class of ion exchanger governed by ligand exchange was developed and investigated to increase the selectivity for phosphate. The current study using organic/inorganic anion exchanger developed with Lewis acid-base interaction confirms the selectivity for phosphate over sulfate. According to isotherm test and column test, the value of the maximum phosphate uptake (Q) showed 64 mg/g as po43- and the breakthrough for phosphate occurs after 1000 min and completely finishes at 2500 min, respectively.
URI
http://pubs.kist.re.kr/handle/201004/44619
ISSN
12257672
Appears in Collections:
KIST Publication > Article
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