Ecologically engineered submerged and emergent macrophyte based system: an integrated eco-electrogenic design for harnessing power with simultaneous wastewater treatment.

Abstract Miniatured ecologically engineered submerged and emergent macrophyte based integrated system (SEMS) was designed by embedding with sediment type fuel cells to harness bioelectricity with simultaneous wastewater treatment. The designed eco-electrogenic system was operated in a continuous mode for 210 days using treated sewage and fermented distillery wastewater (acidogenic effulents from biohydrogen production process). Four fuel cell setups showed feasibility of power production with domestic wastewater (A1C1: 97.99 mW/m2; A2C2: 92.56 mW/m2; A3C3: 128.09 mW/m2and A4C4: 84.76 mW/m2) which comparatively improved with fermented distillery wastewater (A1C1: 179.78 mW/m2; A2C2: 175.56 mW/m2; A3C3: 160.70 mW/m2; A4C4: 140.99 mW/m2) but decreased with further increase in the load. Electrode assemblies connected in series showed stabilized power production (780 ± 22 mV; 4.14 ± 0.19 mA) for longer period. Polarization behavior of combined fuel cells also depicted a decrement in the ohmic and activation losses. The ecologically engineered electrogenic system documented good COD, VFA, color, nitrates and turbidity removal during operation.

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

[2]  J. Todd,et al.  The design of Living Technologies for waste treatment , 1996 .

[3]  Zhenbin Wu,et al.  Treatment performance of integrated vertical-flow constructed wetland plots for domestic wastewater , 2012 .

[4]  Jing Xu,et al.  Performance comparison of experimental constructed wetlands with different filter media and macrophytes treating industrial wastewater contaminated with lead and copper. , 2002, Bioresource technology.

[5]  B. Palsson,et al.  Characterization of Metabolism in the Fe(III)-Reducing Organism Geobacter sulfurreducens by Constraint-Based Modeling , 2006, Applied and Environmental Microbiology.

[6]  R. L. Warner,et al.  Root respiration associated with ammonium and nitrate absorption and assimilation by barley. , 1992, Plant physiology.

[7]  A. Ghaly,et al.  Phytoremediation of aquaculture wastewater for water recycling and production of fish feed. , 2005, Environment international.

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

[9]  S Venkata Mohan,et al.  Sustainable power generation from floating macrophytes based ecological microenvironment through embedded fuel cells along with simultaneous wastewater treatment. , 2011, Bioresource technology.

[10]  Nancy Jack Todd,et al.  Bioshelters, Ocean Arks, City Farming: Ecology as the Basis of Design , 1984 .

[11]  Andreas Schmid,et al.  Analytical biotechnology: from single molecule and single cell analyses to population dynamics of metabolites and cells. , 2010, Current opinion in biotechnology.

[12]  S. Mohan,et al.  Fatty acid rich effluent from acidogenic biohydrogen reactor as substrate for lipid accumulation in heterotrophic microalgae with simultaneous treatment. , 2012 .

[13]  S Venkata Mohan,et al.  Effect of anodic metabolic function on bioelectricity generation and substrate degradation in single chambered microbial fuel cell. , 2008, Environmental science & technology.

[14]  P. N. Sarma,et al.  Integrated function of microbial fuel cell (MFC) as bio-electrochemical treatment system associated with bioelectricity generation under higher substrate load. , 2009, Biosensors & bioelectronics.

[15]  S. Venkata Mohan,et al.  Microalgal community and their growth conditions influence biohydrogen production during integration , 2011 .

[16]  Miklas Scholz,et al.  The universal design, operation and maintenance guidelines for farm constructed wetlands (FCW) in temperate climates. , 2008, Bioresource technology.

[17]  Susan B. Peterson,et al.  The role of plants in ecologically engineered wastewater treatment systems , 1996 .

[18]  D. R. Bond,et al.  Electrode-Reducing Microorganisms That Harvest Energy from Marine Sediments , 2002, Science.

[19]  S Venkata Mohan,et al.  Bioelectricity production from wastewater treatment in dual chambered microbial fuel cell (MFC) using selectively enriched mixed microflora: Effect of catholyte. , 2008, Bioresource technology.

[20]  A. E. Greenberg,et al.  Standard methods for the examination of water and wastewater : supplement to the sixteenth edition , 1988 .

[21]  P. N. Sarma,et al.  Ecologically engineered system (EES) designed to integrate floating, emergent and submerged macrophytes for the treatment of domestic sewage and acid rich fermented-distillery wastewater: Evaluation of long term performance. , 2010, Bioresource technology.

[22]  S Venkata Mohan,et al.  Mixotrophic operation of photo-bioelectrocatalytic fuel cell under anoxygenic microenvironment enhances the light dependent bioelectrogenic activity. , 2012, Bioresource technology.

[23]  K. Chandrasekhar,et al.  Bio-electrochemical remediation of real field petroleum sludge as an electron donor with simultaneous power generation facilitates biotransformation of PAH: effect of substrate concentration. , 2012, Bioresource technology.

[24]  L. T. Angenent,et al.  Light energy to bioelectricity: photosynthetic microbial fuel cells. , 2010, Current opinion in biotechnology.

[25]  W. Granéli,et al.  Influence of Macrophytes on Nitrate Removal in Wetlands , 1994 .

[26]  K. Chandrasekhar,et al.  Solid phase microbial fuel cell (SMFC) for harnessing bioelectricity from composite food waste fermentation: influence of electrode assembly and buffering capacity. , 2011, Bioresource technology.

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

[28]  T. L. Lyon,et al.  The Nature and Properties of Soils , 1930 .

[29]  Chongrak Polprasert,et al.  Organic Waste Recycling: Technology and Management , 2007 .

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

[31]  P. Girguis,et al.  Using electrochemical methods to study redox processes and harvest energy from marine sediments , 2005 .

[32]  A. Bloom,et al.  Ammonium, nitrate, and proton fluxes along the maize root , 1998 .

[33]  D. Lowy,et al.  Harvesting energy from the marine sediment-water interface II. Kinetic activity of anode materials. , 2006, Biosensors & bioelectronics.

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

[35]  David T. Clarkson,et al.  Factors Affecting Mineral Nutrient Acquisition by Plants , 1985 .

[36]  D. R. Bond,et al.  Electricity Production by Geobacter sulfurreducens Attached to Electrodes , 2003, Applied and Environmental Microbiology.

[37]  S. Venkata Mohan,et al.  Natural attenuation of endocrine-disrupting estrogens in an ecologically engineered treatment system (EETS) designed with floating, submerged and emergent macrophytes , 2011 .

[38]  Kazuya Watanabe,et al.  Plant/microbe cooperation for electricity generation in a rice paddy field , 2008, Applied Microbiology and Biotechnology.

[39]  S Srikanth,et al.  Evaluation of the potential of various aquatic eco-systems in harnessing bioelectricity through benthic fuel cell: effect of electrode assembly and water characteristics. , 2009, Bioresource technology.