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http://dx.doi.org/10.12925/jkocs.2017.34.2.210

Extraction of nitrate salts from de-NOx waste scrubbing solution  

Kim, Wooram (Department of Environmental Science and Engineering, Kyung Hee University)
Ha, Taeyoung (Department of Environmental Science and Engineering, Kyung Hee University)
Park, Yeonsoo (Department of Environmental Science and Engineering, Kyung Hee University)
Lee, Hyunsuk (F-tech Corp.)
Jo, Youngmin (Department of Environmental Science and Engineering, Kyung Hee University)
Publication Information
Journal of the Korean Applied Science and Technology / v.34, no.2, 2017 , pp. 210-216 More about this Journal
Abstract
Recovery of low level nitric acid and sulfuric acid ions, which were contained in wastewater of a wet scrubber for de-NOx and de-SOx from ship engines, was attempted as fertilizing materials. This study utilized a selective extraction method using four organic solvents to precipitate the solid salts of ammonium nitrate and ammonium sulfate. The IR analysis showed almost same composition of the extracted ammonium salts with a commercial product, and recovery rate of nitrogen and sulfuric ions was 89% and 80% respectively. It was found that the selectivity and solubility consequently could be the crucial factors to recover the low level ions from the waste scrubbing water.
Keywords
Ammonium nitrate; Ammonium sulfate; Solvent extraction; Scrubbing wastewater; Ion recovery;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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