Hybrid system up-flow constructed wetland integrated with microbial fuel cell for simultaneous wastewater treatment and electricity generation

Microbial community structure accompanied with electricity production in a constructed wetland plant microbial fuel cell

“…Previous studies have demonstrated that when Ipomoea aquatic, Typha latifolia or Canna indica were planted in constructed wetland coupled MFC systems, electricity was generated and contaminant removal was enhanced during wastewater treatment (Fang et al, 2013;Oon et al, 2015;Yadav et al, 2012). Other species including Glyceria maxima, Spartina anglica, Arundinella anomala, Lemna minuta, and Arundo donax have been studied in PMFCs and showed current production associated with plant rhizodeposits (Helder et al, 2010(Helder et al, , 2012aHubenova and Mitov, 2012;Strik et al, 2008;Timmers et al, 2010Timmers et al, , 2012Wetser et al, 2015).…”

Effects of temperature on wastewater treatment in an affordable microbial fuel cell-adsorption hybrid system

“…Majority of the effective pollutants removal were done by integrating MFC with other unit operation or processes. Recently, it has been reported that greater bio-energy generation and wastewater treatment can be accomplished when MFC is hybridized with unit operations or processes such as adsorption [17], membrane bioreactor [10], sequencing batch reactor [18], membrane, aeration system [19], anaerobic digester [20], aerobic system [15], biofermentor [21], anaerobic fluidized bed [22], wetland [23], anaerobic fluidized membrane reactor [24] and anaerobic sludge blanket [25]. MFC could also possibly be combined with other process such as nitritation-anammox where the research had been greatly developing in order to remove wastewater which content high level of nitrogen content [26,27].…”

Effects of influent organic loading rates and electrode locations on the electrogenesis capacity of constructed wetland‐microbial fuel cell systems

“…In some previous studies of planted-MFCs (PMFCs) [22] or CW-MFCs [6], the excreted oxygen from plant roots that had high amounts of aerenchyma could function efficiently as a cathodic electron acceptor when the cathode was placed in an aerobic rhizosphere. However, quite low voltage generation was obtained in other studies, which also used roots as the cathode region [23,24]. Two possible reasons exist for that the cathode located in the wetland plants root could not work efficiently or even stopped working: a limited capacity to release oxygen through the aerenchyma of wetland plants and a high concentration of organic matter flowing into the cathode area [6].…”

“…Furthermore, a maximum power density of 44.63 mW m −2 was obtained by placing the cathode around the plant roots . However, the power output with the cathode located around the roots of Phragmites australis or Typha latifolia is relatively low . These significantly different results obtained through utilizing the root as the cathode may be caused by the variation in plant species, which lead to discrepancies in root morphological and structural features, as well as the secretory capacities of oxygen and organics.…”