A review of a recently emerged technology: Constructed wetland--Microbial fuel cells.

Constructed wetlands (CWs) and microbial fuel cells (MFCs) are compatible technologies since both are reliant on the actions of bacteria to remove contaminants from wastewater. MFCs require the anode to remain anaerobic with the cathode exposed to oxygen while these redox conditions can develop naturally in CWs. For this reason, research into combining the two technologies (termed as CW-MFC) has emerged in recent years with the aim of improving the wastewater treatment capacity of wetlands while simultaneously producing electrical power. Based on the published work (although limited), this review aims to provide a timely, current state-of-the-art in CW-MFC while exploring future challenges and research directions.

[1]  A. Dordio,et al.  Organic xenobiotics removal in constructed wetlands, with emphasis on the importance of the support matrix. , 2013, Journal of hazardous materials.

[2]  Chengzhong Yu,et al.  A graphene modified anode to improve the performance of microbial fuel cells , 2011 .

[3]  Wei Li,et al.  Interface Study of ITO/ZnO and ITO/SnO2 Complex Transparent Conductive Layers and Their Effect on CdTe Solar Cells , 2013 .

[4]  Yaqian Zhao,et al.  Robust biological nitrogen removal by creating multiple tides in a single bed tidal flow constructed wetland. , 2014, The Science of the total environment.

[5]  Hailiang Song,et al.  Electricity production from Azo dye wastewater using a microbial fuel cell coupled constructed wetland operating under different operating conditions. , 2015, Biosensors & bioelectronics.

[6]  Lu Lu,et al.  Microbial community structure accompanied with electricity production in a constructed wetland plant microbial fuel cell. , 2015, Bioresource technology.

[7]  Dongxiao Zhang,et al.  Evaluation of a lab-scale tidal flow constructed wetland performance: Oxygen transfer capacity, organic matter and ammonium removal , 2011 .

[8]  S. Venkata Mohan,et al.  Influence of graphite flake addition to sediment on electrogenesis in a sediment-type fuel cell , 2012 .

[9]  Hong Liu,et al.  Improved performance of CEA microbial fuel cells with increased reactor size , 2012 .

[10]  Robert H. Kadlec,et al.  Comparison of free water and horizontal subsurface treatment wetlands , 2009 .

[11]  Zhiguo Yuan,et al.  Sequential anode-cathode configuration improves cathodic oxygen reduction and effluent quality of microbial fuel cells. , 2008, Water research.

[12]  Jian Zhang,et al.  Effect of intermittent operation on contaminant removal and plant growth in vertical flow constructed wetlands: A microcosm experiment , 2010 .

[13]  Akira Hirata,et al.  Simple prediction of oxygen penetration depth in biofilms for wastewater treatment , 2004 .

[14]  Yaqian Zhao,et al.  Diurnal fluctuations in root oxygen release rate and dissolved oxygen budget in wetland mesocosm , 2011 .

[15]  Wen-Wei Li,et al.  Microbial fuel cells in power generation and extended applications. , 2012, Advances in biochemical engineering/biotechnology.

[16]  Soon-An Ong,et al.  Hybrid system up-flow constructed wetland integrated with microbial fuel cell for simultaneous wastewater treatment and electricity generation. , 2015, Bioresource technology.

[17]  Amy Pruden,et al.  Microbial fuel cell in enhancing anaerobic biodegradation of diesel , 2009 .

[18]  R. Maranger,et al.  Nitrogen transformations and retention in planted and artificially aerated constructed wetlands. , 2009, Water research.

[19]  M. Engel,et al.  Microbial community structure elucidates performance of Glyceria maxima plant microbial fuel cell , 2012, Applied Microbiology and Biotechnology.

[20]  H. Hamelers,et al.  Rhizosphere anode model explains high oxygen levels during operation of a Glyceria maxima PMFC. , 2012, Bioresource technology.

[21]  Fang Zhang,et al.  Power generation using an activated carbon and metal mesh cathode in a microbial fuel cell , 2009 .

[22]  P. Cañizares,et al.  Operation of a horizontal subsurface flow constructed wetland--microbial fuel cell treating wastewater under different organic loading rates. , 2013, Water research.

[23]  Hai Liu,et al.  A review on the sustainability of constructed wetlands for wastewater treatment: Design and operation. , 2015, Bioresource technology.

[24]  Deukhyoun Heo,et al.  Scale-up of sediment microbial fuel cells , 2014 .

[25]  Zhen He,et al.  Integrated organic and nitrogen removal with electricity generation in a tubular dual-cathode microbial fuel cell , 2012 .

[26]  Xianning Li,et al.  Power Generation Enhancement by Utilizing Plant Photosynthate in Microbial Fuel Cell Coupled Constructed Wetland System , 2013 .

[27]  Feng Zhao,et al.  A novel sediment microbial fuel cell with a biocathode in the rice rhizosphere. , 2012, Bioresource technology.

[28]  Zhiguo Yuan,et al.  Microbial fuel cells for simultaneous carbon and nitrogen removal. , 2008, Water research.

[29]  Martin Regelsberger,et al.  Constructed wetland as a low cost and sustainable solution for wastewater treatment adapted to rural settlements: the Chorfech wastewater treatment pilot plant. , 2011, Water science and technology : a journal of the International Association on Water Pollution Research.

[30]  Jan Vymazal,et al.  The use of hybrid constructed wetlands for wastewater treatment with special attention to nitrogen removal: a review of a recent development. , 2013, Water research.

[31]  Bruce E. Logan,et al.  Scale-up of membrane-free single-chamber microbial fuel cells , 2008 .

[32]  I. Chang,et al.  Comparison in performance of sediment microbial fuel cells according to depth of embedded anode. , 2013, Bioresource technology.

[33]  Hubertus V. M. Hamelers,et al.  Green electricity production with living plants and bacteria in a fuel cell , 2008 .

[34]  P. Liang,et al.  Recent progress in electrodes for microbial fuel cells. , 2011, Bioresource technology.

[35]  Bruce E. Logan,et al.  Microbial Fuel Cells , 2006 .

[36]  A M Urtiaga,et al.  Electrochemical oxidation of landfill leachates at pilot scale: evaluation of energy needs. , 2010, Water science and technology : a journal of the International Association on Water Pollution Research.

[37]  S. Venkata Mohan,et al.  Synergistic interaction of biocatalyst with bio-anode as a function of electrode materials , 2011 .

[38]  Clara Corbella,et al.  Vertical redox profiles in treatment wetlands as function of hydraulic regime and macrophytes presence: surveying the optimal scenario for microbial fuel cell implementation. , 2014, The Science of the total environment.

[39]  W. Verstraete,et al.  Suitability of granular carbon as an anode material for sediment microbial fuel cells , 2012, Journal of Soils and Sediments.

[40]  S Srikanth,et al.  Influence of terminal electron acceptor availability to the anodic oxidation on the electrogenic activity of microbial fuel cell (MFC). , 2012, Bioresource technology.

[41]  Guy McGrath,et al.  Integrated Constructed Wetlands (ICW) working at the landscape scale: The Anne Valley project, Ireland , 2013, Ecol. Informatics.

[42]  D. Lowy,et al.  Harnessing microbially generated power on the seafloor , 2002, Nature Biotechnology.

[43]  Fei Liu,et al.  Performance of a scaled-up Microbial Fuel Cell with iron reduction as the cathode reaction , 2011 .

[44]  Shungui Zhou,et al.  Enhanced anaerobic degradation of organic pollutants in a soil microbial fuel cell , 2011 .

[45]  Xianning Li,et al.  Bio-cathode materials evaluation and configuration optimization for power output of vertical subsurface flow constructed wetland - microbial fuel cell systems. , 2014, Bioresource technology.

[46]  Derek R Lovley,et al.  Graphite electrodes as electron donors for anaerobic respiration. , 2004, Environmental microbiology.

[47]  Florent Chazarenc,et al.  Artificial aeration to increase pollutant removal efficiency of constructed wetlands in cold climate , 2006 .

[48]  H. Hamelers,et al.  Long-term performance of a plant microbial fuel cell with Spartina anglica , 2010, Applied Microbiology and Biotechnology.

[49]  Inmaculada Ortiz,et al.  Contributions of electrochemical oxidation to waste-water treatment: fundamentals and review of applications , 2009 .

[50]  Sang-Eun Oh,et al.  Power generation using different cation, anion, and ultrafiltration membranes in microbial fuel cells. , 2007, Environmental science & technology.

[51]  Rouzbeh Abbassi,et al.  Performance assessment of innovative constructed wetland-microbial fuel cell for electricity production and dye removal , 2012 .

[52]  Hans Brix,et al.  Can root exudates from emergent wetland plants fuel denitrification in subsurface flow constructed wetland systems , 2013 .

[53]  W. Verstraete,et al.  Greenhouse gas emissions from rice microcosms amended with a plant microbial fuel cell , 2013, Applied Microbiology and Biotechnology.

[54]  G. Mohanakrishna,et al.  Rhizosphere mediated electrogenesis with the function of anode placement for harnessing bioenergy through CO2 sequestration. , 2012, Bioresource technology.

[55]  Jan Vymazal,et al.  Constructed wetlands for treatment of industrial wastewaters: A review , 2014 .

[56]  W. Verstraete,et al.  Microbial fuel cells generating electricity from rhizodeposits of rice plants. , 2008, Environmental science & technology.

[57]  B. Logan,et al.  Graphite fiber brush anodes for increased power production in air-cathode microbial fuel cells. , 2007, Environmental science & technology.

[58]  Xinshan Song,et al.  Performance of laboratory-scale constructed wetlands coupled with micro-electric field for heavy metal-contaminating wastewater treatment , 2011 .

[59]  Tristan R. H. Goodbody,et al.  Preliminary investigation of constructed wetland incorporating microbial fuel cell: Batch and continuous flow trials , 2013 .

[60]  Stefano Freguia,et al.  Microbial fuel cells: methodology and technology. , 2006, Environmental science & technology.

[61]  Hong Liu,et al.  Increased power generation in a continuous flow MFC with advective flow through the porous anode and reduced electrode spacing. , 2006, Environmental science & technology.

[62]  Baikun Li,et al.  Power recovery with multi-anode/cathode microbial fuel cells suitable for future large-scale applications , 2010 .

[63]  Byung Hong Kim,et al.  Improved performance of microbial fuel cell using combination biocathode of graphite fiber brush and graphite granules , 2011 .

[64]  Jiade Wang,et al.  Industrial park wastewater deeply treated and reused by a novel electrochemical oxidation reactor , 2015 .

[65]  Cheng-Fu Yang,et al.  Using Flexible Polyimide as a Substrate to Deposit ZnO:Ga Thin Films and Fabricate p-i-n -Si:H Thin-Film Solar Cells , 2013 .

[66]  Wenke Wang,et al.  Nutrient and organics removal from swine slurry with simultaneous electricity generation in an alum sludge-based constructed wetland incorporating microbial fuel cell technology , 2015 .

[67]  E. Cortón,et al.  Performance of planar and cylindrical carbon electrodes at sedimentary microbial fuel cells. , 2012, Bioresource technology.

[68]  Hailiang Song,et al.  Performance of microbial fuel cell coupled constructed wetland system for decolorization of azo dye and bioelectricity generation. , 2013, Bioresource technology.

[69]  P. Liang,et al.  Simultaneous carbon and nitrogen removal using an oxic/anoxic-biocathode microbial fuel cells coupled system. , 2011, Bioresource technology.

[70]  Shubiao Wu,et al.  How the novel integration of electrolysis in tidal flow constructed wetlands intensifies nutrient removal and odor control. , 2014, Bioresource technology.

[71]  L. Tender,et al.  Harvesting Energy from the Marine Sediment−Water Interface , 2001 .

[72]  Ü. Mander,et al.  Greenhouse gas emission in constructed wetlands for wastewater treatment: A review , 2014 .

[73]  W Verstraete,et al.  Enhanced disinfection of wastewater by combining wetland treatment with bioelectrochemical H(2)O(2) production. , 2014, Bioresource technology.

[74]  Bruce E. Logan,et al.  A multi-electrode continuous flow microbial fuel cell with separator electrode assembly design , 2012, Applied Microbiology and Biotechnology.

[75]  Zhen He,et al.  Recovery of Electrical Energy in Microbial Fuel Cells , 2014 .

[76]  W. Verstraete,et al.  Open air biocathode enables effective electricity generation with microbial fuel cells. , 2007, Environmental science & technology.

[77]  L. Hsu,et al.  Scale up considerations for sediment microbial fuel cells , 2013 .