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마이크로웨이브를 이용한 폐수 내 고농도 암모니아성질소 제거
신소연 ( So Yeun Shin ),구본흥 ( Bon Heung Koo ),김태현 ( Tae Hyun Kim ),이유학 ( Yu Hak Lee ),안종화 ( Johng Hwa Ahn ) 한국물환경학회 2014 한국물환경학회지 Vol.30 No.5
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 (70~100°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 -1.0755 min-1. As the temperature increased from 70 to 100°C, k increased -0.0338 to -1.0755 min-1. As the pH increased from 9 to 11, k increased -0.2443 to -1.0755 min-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.