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http://dx.doi.org/10.15681/KSWE.2014.30.5.486

Ammonia Nitrogen Removal in Wastewater Using Microwave Irradiation  

Shin, Soyeun (Department of Environmental Engineering, Kangwon National University)
Koo, Bonheung (Department of Environmental Engineering, Kangwon National University)
Kim, Taehyun (Department of Environmental Engineering, Kangwon National University)
Lee, Yuhak (Department of Environmental Engineering, Kangwon National University)
Ahn, Johng-Hwa (Department of Environmental Engineering, Kangwon National University)
Publication Information
Journal of Korean Society on Water Environment / v.30, no.5, 2014 , pp. 486-490 More about this Journal
Abstract
Industrial use of microwave heating as an alternative to conventional heating is becoming popular mainly due to dramatic reductions in reaction time. Therefore, this work experimentally determined the effect of microwave irradiation on ammonia nitrogen removal in wastewater. The effects of air flow rate (0.3~0.9 L/min), treatment temperature ($70{\sim}100^{\circ}C$), and initial pH (9~11) were characterized. As the air flow rate increased from 0.3 to 0.9 L/min, the ammonia removal rate constant (k) increased from -0.6642 to $-1.0755min^{-1}$. As the temperature increased from 70 to $100^{\circ}C$, k increased -0.0338 to $-1.0755min^{-1}$. As the pH increased from 9 to 11, k increased -0.2443 to $-1.0755min^{-1}$. Ammonia removal was strongly dependent on temperature and pH rather than air flow rate. The results show that microwave irradiation is effective in ammonia nitrogen removal in wastewater due to advantages of fast and effective processing.
Keywords
Air flow rate; Ammonia nitrogen; Microwave; pH; Temperature;
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Times Cited By KSCI : 2  (Citation Analysis)
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