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http://dx.doi.org/10.14478/ace.2015.1086

Enhancement of Nitrate Removal Ability in Aqueous Phase Using Ulmus davidiana Bark for Preventing Eutrophication  

Choi, Suk Soon (Department of Biological and Environmental Engineering, Semyung University)
Choi, Jung Hoon (Department of Biological and Environmental Engineering, Semyung University)
Kim, Min-Ji (Department of Applied Chemistry and Biological Engineering, Chungnam National University)
Lee, Young-Seak (Department of Applied Chemistry and Biological Engineering, Chungnam National University)
Ha, Jeong Hyub (Department of Chemical Engineering, Pohang University of Science and Technology)
Cha, Hyung Joon (Department of Chemical Engineering, Pohang University of Science and Technology)
Publication Information
Applied Chemistry for Engineering / v.26, no.5, 2015 , pp. 604-608 More about this Journal
Abstract
In the present work, the improvement of nitrate removal ability was investigated to resolve a eutrophication problem by using Ulmus davidiana (U. davidiana) bark generated from Gangwon province. When the initial pH of aqueous solution was adjusted to 3.5 in batch experiments, the removal efficiencies for 10 and 20 mg/L nitrate increased up to 43 and 37%, respectively. In addition, when U. davidiana bark of 1.0 g/100 mL was used for 8 h, the removal efficiency for 20 mg/L nitrate was 68%. Moreover, when reforming reaction of U. davidiana bark was performed under oxyfluorination conditions, the optimal ratio of partial pressure between fluorine and oxygen was 1 : 9 for an enhanced nitrate adsorption amount. When reformed U. davidiana bark was used for 8 h operation under the optimal oxyfluorination condition, removal efficiencies for 10, 20 and 40 mg/L nitrate were found to be 96, 95 and 59%, respectively. Collectively, these results suggest that our water treatment technology can be effectively utilized to treat high concentrations of nitrate in water bodies.
Keywords
Ulmus davidiana bark; removal efficiency for nitrate; oxyfluorination;
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Times Cited By KSCI : 4  (Citation Analysis)
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