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J Korean Soc Environ Eng > Volume 38(12); 2016 > Article
J Korean Soc Environ Eng 2016;38(12): 635-640. doi: https://doi.org/10.4491/KSEE.2016.38.12.635
식종원 및 유기물 농도 변화에 따른 평판형 외기환원전극 미생물 연료전지의 질소 제거
박영현, 유재철, Thi Hien Nguyen, 이태호
부산대학교 사회환경시스템공학과
Nitrogen Removal in Flat-Panel Air-Cathode Microbial Fuel Cell according to Various Inoculum Sources and Organic Concentration
Younghyun Park, Jaecheul Yu, Thi Hien Nguyen, Taeho Lee
Department of Civil and Environmental Engineering, Pusan National University
Corresponding author  Taeho Lee ,Tel: 051-510-2465, Fax: 051-514-9574, Email: leeth55@pusan.ac.kr
Received: October 24, 2016;  Revised: December 6, 2016;  Accepted: December 9, 2016.  Published online: December 31, 2016.
ABSTRACT
Although microbial fuel cell (MFC) can produce electricity from organics in wastewater, nitrogen removal is required for application of process for wastewater treatment plant. This study developed flat-panel air-cathode MFCs (FA-MFCs) comprised of two large separator electrode assemblies (SEAs) and evaluate total nitrogen removal according to three inoculum sources and prenitrification acclimation. The nitrification efficiencies were >99% regardless of inoculum sources under the phase for pre-nitrification acclimation. The total nitrogen removal efficiencies of FA-MFCs without pre-nitrification acclimation were the highest at the low organic conditions (<300 mg-COD/L) under the phase for nitrification and denitrification. The increase of organic concentration influenced the total nitrogen removal efficiency, positively. The organics were removed >95% but were not used for heterotrophic denitrification totally. This study suggests that application of FA-MFC system for wastewater treatment can allow the simultaneous removal of organic and nitrogen compounds, although this affects the low electricity production.
Key Words: Microbial Fuel Cell, Nitrification, Denitrification, Inoculum Source
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