Journal
BIORESOURCE TECHNOLOGY
Volume 215, Issue -, Pages 290-295Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.03.167
Keywords
Microbial fuel cell; Ammonia removal; Ammonia recovery; Anammox; pH
Funding
- Cooperative Research Program for Agriculture Science Technology Development (Project title: Development of resource recovery system based bioelectrochemical principle from livestock wastewater) of the Rural Development Administration, Republic of Korea [PJ0108242016]
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In this work, ammonia removal paths in microbial fuel cells (MFCs) under different initial pH conditions (pH 7.0, 8.0, and 8.6) were investigated. At a neutral pH condition (pH 7.0), MFC used an electrical energy of 27.4% and removed 23.3% of total ammonia by electrochemical pathway for 192 h. At the identical pH condition, 36.1% of the total ammonia was also removed by the biological path suspected to be biological ammonia oxidation process (e.g., Anammox). With the initial pH increased, the electrochemical removal efficiency decreased to less than 5.0%, while the biological removal efficiency highly increased to 61.8%. In this study, a neutral pH should be maintained in the anode to utilize MFCs for ammonia recovery via electrochemical pathways from wastewater stream. (C) 2016 Elsevier Ltd. All rights reserved.
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