Pau Bosch-Jimenez, Clara Corbella, Ainhoa Gaudes, Sonia Sanchis, Pau Lopez, Daniele Molognoni, Alicia Villazán Cabero, Jose María de Cuenca, Eduard Borràs
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Electrowetland Pilot of 50 m2: Operation and Characterization Under Real Conditions for 1 Year
Traditional wastewater treatment plants (WWTPs) consume a significant amount of energy to clean wastewater. However, for medium- and small-scale WWTPs, it is crucial to have an energetically self-sustained treatment. In this regard, novel low-energy demand treatment systems, such as nature-based solutions (NBS), are highly suitable alternatives. Constructed wetlands coupled with microbial fuel cells (MFC), referred to as electrowetlands (EWs), are NBS able to treat wastewater while recovering electricity. In this study, initially, various granular carbon materials were tested as anode materials in laboratory-scale MFCs, and anthracite was selected due to its higher electrochemical activity. Then, pre-pilot scale tests were conducted, evaluating different EW configurations. The one consisting in a horizontal anode yielded the best wastewater treatment efficiencies (chemical oxygen demand [COD] degradation greater than 90%) and electricity production (11 mW m−2; 260 mWh day−1 m−2). Finally, a 50 m2 pilot was constructed in Valladolid, studying its performance under real conditions for 1 year. The pilot showed robust and stable performance, achieving high wastewater treatment efficiencies (COD degradation >85%, outflow COD of 100 ppm) and generating 115 Wh in 1 year (power density of 0.4 mW m−2).
期刊介绍：
This journal is only available online from 2011 onwards.
Fuel Cells — From Fundamentals to Systems publishes on all aspects of fuel cells, ranging from their molecular basis to their applications in systems such as power plants, road vehicles and power sources in portables.
Fuel Cells is a platform for scientific exchange in a diverse interdisciplinary field. All related work in
-chemistry-
materials science-
physics-
chemical engineering-
electrical engineering-
mechanical engineering-
is included.
Fuel Cells—From Fundamentals to Systems has an International Editorial Board and Editorial Advisory Board, with each Editor being a renowned expert representing a key discipline in the field from either a distinguished academic institution or one of the globally leading companies.
Fuel Cells—From Fundamentals to Systems is designed to meet the needs of scientists and engineers who are actively working in the field. Until now, information on materials, stack technology and system approaches has been dispersed over a number of traditional scientific journals dedicated to classical disciplines such as electrochemistry, materials science or power technology.
Fuel Cells—From Fundamentals to Systems concentrates on the publication of peer-reviewed original research papers and reviews.
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