Journal
WASTE MANAGEMENT
Volume 48, Issue -, Pages 135-142Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.wasman.2015.11.022
Keywords
Compost microbial fuel cell; Composting; Anaerobic digestion; Biodegradation
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Funding
- Council of Trust for the People (Majlis Amanah Rakyat) of Malaysia
- Natural Sciences and Engineering Research Council of Canada (NSERC)
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In this work, compost Microbial Fuel Cells (cMFCs) were used to generate electricity from a mix of fruit and vegetable wastes, and soil with different C/N ratios and salinities. Experiments were carried out in 500 mL cMFCs equipped with carbon felt anodes and manganese dioxide cathodes. The cMFCs were loaded with fresh compost and operated at 20-23 degrees C for up to 97 days. The low C/N ratio (C/N 24) had a greater power production with a maximum power density of 5.29 mW/m(2) (71.43 mW/m(3)), indicating a more favorable condition for microbial growth. High-saline cMFCs produced lower power, suggesting that their level of salinity (10 g/L of NaCl) inhibited electricigenic microorganisms. The closed-circuit cMFC showed an improved degradation of organic matter by 6% to 8% compared to the control MFC operated in an open circuit mode (no external resistor attached). (C) 2015 Elsevier Ltd. All rights reserved.
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