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Juha Pyrhonen - One of the best experts on this subject based on the ideXlab platform.

  • economics and greenhouse gas balance of distributed Electricity Production at sawmills using hermetic turbogenerator
    Renewable Energy, 2016
    Co-Authors: Maija Leino, Ville Uusitalo, Risto Soukka, Aki Grönman, Janne Nerg, Mika Horttanainen, Juha Pyrhonen
    Abstract:

    This article focuses on greenhouse gas (GHG) emissions reduction and on the economics in renewable Electricity Production at sawmills. Electricity Production application in this study is a hermetic turbogenerator (HTG). The HTG is a small-scale steam turbine-generator unit of compact size that achieves high efficiency. The paper studies GHG emissions and the economics of HTG use in sawmills using life cycle assessment methodologies. Small- and large-scale HTG processes are studied in three scenarios. Sawmills produce large volumes of biomass by-products which are mainly used to produce heat needed in lumber dryers. However, due to remote location of sawmills there may be no use for excess biomass. HTGs can be used to produce Electricity in addition to heat (CHP), which may help to increase renewable Electricity Production in sparsely populated areas. It is concluded that from the economic perspective HTGs may be an attractive option but financial viability is dependent on energy prices, required investments, and by-product value. From the climate change perspective, Electricity Production with HTGs may be a good option if there is excess biomass sources available.

  • economics and greenhouse gas balance of distributed Electricity Production at sawmills using hermetic turbogenerator
    Renewable Energy, 2016
    Co-Authors: Maija Leino, Ville Uusitalo, Risto Soukka, Aki Grönman, Janne Nerg, Mika Horttanainen, Juha Pyrhonen
    Abstract:

    This article focuses on greenhouse gas (GHG) emissions reduction and on the economics in renewable Electricity Production at sawmills. Electricity Production application in this study is a hermetic turbogenerator (HTG). The HTG is a small-scale steam turbine-generator unit of compact size that achieves high efficiency. The paper studies GHG emissions and the economics of HTG use in sawmills using life cycle assessment methodologies. Small- and large-scale HTG processes are studied in three scenarios. Sawmills produce large volumes of biomass by-products which are mainly used to produce heat needed in lumber dryers. However, due to remote location of sawmills there may be no use for excess biomass. HTGs can be used to produce Electricity in addition to heat (CHP), which may help to increase renewable Electricity Production in sparsely populated areas. It is concluded that from the economic perspective HTGs may be an attractive option but financial viability is dependent on energy prices, required investments, and by-product value. From the climate change perspective, Electricity Production with HTGs may be a good option if there is excess biomass sources available.

Maija Leino - One of the best experts on this subject based on the ideXlab platform.

  • economics and greenhouse gas balance of distributed Electricity Production at sawmills using hermetic turbogenerator
    Renewable Energy, 2016
    Co-Authors: Maija Leino, Ville Uusitalo, Risto Soukka, Aki Grönman, Janne Nerg, Mika Horttanainen, Juha Pyrhonen
    Abstract:

    This article focuses on greenhouse gas (GHG) emissions reduction and on the economics in renewable Electricity Production at sawmills. Electricity Production application in this study is a hermetic turbogenerator (HTG). The HTG is a small-scale steam turbine-generator unit of compact size that achieves high efficiency. The paper studies GHG emissions and the economics of HTG use in sawmills using life cycle assessment methodologies. Small- and large-scale HTG processes are studied in three scenarios. Sawmills produce large volumes of biomass by-products which are mainly used to produce heat needed in lumber dryers. However, due to remote location of sawmills there may be no use for excess biomass. HTGs can be used to produce Electricity in addition to heat (CHP), which may help to increase renewable Electricity Production in sparsely populated areas. It is concluded that from the economic perspective HTGs may be an attractive option but financial viability is dependent on energy prices, required investments, and by-product value. From the climate change perspective, Electricity Production with HTGs may be a good option if there is excess biomass sources available.

  • economics and greenhouse gas balance of distributed Electricity Production at sawmills using hermetic turbogenerator
    Renewable Energy, 2016
    Co-Authors: Maija Leino, Ville Uusitalo, Risto Soukka, Aki Grönman, Janne Nerg, Mika Horttanainen, Juha Pyrhonen
    Abstract:

    This article focuses on greenhouse gas (GHG) emissions reduction and on the economics in renewable Electricity Production at sawmills. Electricity Production application in this study is a hermetic turbogenerator (HTG). The HTG is a small-scale steam turbine-generator unit of compact size that achieves high efficiency. The paper studies GHG emissions and the economics of HTG use in sawmills using life cycle assessment methodologies. Small- and large-scale HTG processes are studied in three scenarios. Sawmills produce large volumes of biomass by-products which are mainly used to produce heat needed in lumber dryers. However, due to remote location of sawmills there may be no use for excess biomass. HTGs can be used to produce Electricity in addition to heat (CHP), which may help to increase renewable Electricity Production in sparsely populated areas. It is concluded that from the economic perspective HTGs may be an attractive option but financial viability is dependent on energy prices, required investments, and by-product value. From the climate change perspective, Electricity Production with HTGs may be a good option if there is excess biomass sources available.

Xingwang Zhang - One of the best experts on this subject based on the ideXlab platform.

  • azo dye treatment with simultaneous Electricity Production in an anaerobic aerobic sequential reactor and microbial fuel cell coupled system
    Bioresource Technology, 2010
    Co-Authors: Zhongjian Li, Xingwang Zhang
    Abstract:

    Abstract A microbial fuel cell and anaerobic–aerobic sequential reactor coupled system was used for azo dye degradation with simultaneous Electricity Production. Electricity was produced during the co-metabolism process of glucose and azo dye. A microorganism cultured graphite-granular cathode effectively decreased the charge transfer resistance of the cathode and yielded higher power density. Operation parameters including glucose concentration and hydraulic retention time were optimized. The results indicated that recovering Electricity during a sequential aerobic–anaerobic azo dye treatment process enhanced chemical oxygen demand removal and did not decrease azo dye removal. Moreover, UV–vis spectra and GC–MS illustrated that the azo bond was cleaved biologically in the anaerobic chamber and abiotically in the aerobic chamber. The toxic intermediates, aromatic amines, were removed by aerobic treatment. Our work demonstrated that the microbial fuel cell and sequential anode–cathode reactor coupled system could be applied to achieve Electricity Production with simultaneous azo dye degradation.

Cees J N Buisman - One of the best experts on this subject based on the ideXlab platform.

  • Electricity Production with living plants on a green roof environmental performance of the plant microbial fuel cell
    Biofuels Bioproducts and Biorefining, 2013
    Co-Authors: M Helder, David P B T B Strik, Hubertus V M Hamelers, Cees J N Buisman, Wei Shan Chen, E J M Van Der Harst, Josepha Potting
    Abstract:

    Several renewable and (claimed) sustainable energy sources have been introduced into the market during the last century in an attempt to battle pollution from fossil fuels. Especially biomass energy technologies have been under debate for their sustainability. A new biomass energy technology was introduced in 2008: the plant-microbial fuel cell (P-MFC). In this system, Electricity can be generated with living plants and thus bioElectricity and biomass Production can be combined on the same surface. A green roof producing Electricity with a P-MFC could be an interesting combination. P-MFC technology is nearing implementation in the market and therefore we assessed the environmental performance of the system with an early stage life cycle assessment (LCA). The environmental performance of the P-MFC is currently worse than that of conventional Electricity Production technologies. This is mainly due to the limited power output of the P-MFC and the materials presently used in the P-MFC. Granular activated carbon (anode material), gold wires (current collectors), and Teflon-coated copper wires (connecting anode and cathode) have the largest impact on environmental performance. Use of these materials needs to be reduced or avoided and alternatives need to be sought. Increasing power output and deriving co-products from the P-MFC will increase environmental performance of the P-MFC. At this stage it is too early to compare the P-MFC with other (renewable) energy technologies since the P-MFC is still under development. © 2013 Society of Chemical Industry and John Wiley & Sons, Ltd

  • Renewable sustainable biocatalyzed Electricity Production in a photosynthetic algal microbial fuel cell (PAMFC)
    Applied Microbiology and Biotechnology, 2008
    Co-Authors: David P B T B Strik, Hubertus V M Hamelers, Hilde Terlouw, Cees J N Buisman
    Abstract:

    Electricity Production via solar energy capturing by living higher plants and microalgae in combination with microbial fuel cells are attractive because these systems promise to generate useful energy in a renewable, sustainable, and efficient manner. This study describes the proof of principle of a photosynthetic algal microbial fuel cell (PAMFC) based on naturally selected algae and electrochemically active microorganisms in an open system and without addition of instable or toxic mediators. The developed solar-powered PAMFC produced continuously over 100 days renewable biocatalyzed Electricity. The sustainable performance of the PAMFC resulted in a maximum current density of 539 mA/m^2 projected anode surface area and a maximum power Production of 110 mW/m^2 surface area photobioreactor. The energy recovery of the PAMFC can be increased by optimization of the photobioreactor, by reducing the competition from non-electrochemically active microorganisms, by increasing the electrode surface and establishment of a further-enriched biofilm. Since the objective is to produce net renewable energy with algae, future research should also focus on the development of low energy input PAMFCs. This is because current algae Production systems have energy inputs similar to the energy present in the outcoming valuable products.

  • green Electricity Production with living plants and bacteria in a fuel cell
    International Journal of Energy Research, 2008
    Co-Authors: David P B T B Strik, Hubertus V M Hamelers, Jan Frederik Hendrik Snel, Cees J N Buisman
    Abstract:

    SUMMARY The world needs sustainable, efficient, and renewable energy Production. We present the plant microbial fuel cell (plantMFC), a concept that exploits a bioenergy source in situ. In the plant-MFC, plants and bacteria were present to convert solar energy into green Electricity. The principal idea is that plants produce rhizodeposits, mostly in the form of carbohydrates, and the bacteria convert these rhizodeposits into electrical energy via the fuel cell. Here, we demonstrated the proof of principle using Reed mannagrass. We achieved a maximal electrical power Production of 67 mW m � 2 anode surface. This system was characterized by: (1) nondestructive, in situ harvesting of bioenergy; (2) potential implementation in wetlands and poor soils without competition to food or conventional bioenergy Production, which makes it an additional bioenergy supply; (3) an estimated potential Electricity Production of 21 GJ ha � 1 year � 1 ð5800 kWh ha � 1 year � 1 Þ in Europe; and (4) carbon neutral and combustion emission-free operation. Copyright # 2008 John Wiley & Sons, Ltd.

Asheesh Kumar Yadav - One of the best experts on this subject based on the ideXlab platform.

  • performance assessment of innovative constructed wetland microbial fuel cell for Electricity Production and dye removal
    Ecological Engineering, 2012
    Co-Authors: Asheesh Kumar Yadav, Purnanjali Dash, Ayusman Mohanty, Rouzbeh Abbassi, B K Mishra
    Abstract:

    This research work deals with performance assessment of constructed wetlands-microbial fuel cell (CW-MFC) for Electricity Production and wastewater treatment. Microbial fuel cell consists of two chambers i.e. anaerobic and aerobic, where oxidation and reduction reactions take place. Constructed wetland also consists of aerobic and anaerobic zones where oxidation and reduction processes take place. These similarities in both technologies motivated us to design and develop a new type constructed wetland-microbial fuel cell. In this CW-MFC, the removal of dye and COD were investigated along with Electricity generation. Experiments were performed in batch mode using different dye (methylene blue dye) concentration containing synthetic wastewater. Our results show that 76.2, 80.87, 69.29 and 93.15 percentage dye removal could be achieved after 96h of treatment of wastewater containing 2000, 1500, 1000 and 500mgl -1 initial concentration respectively. Also, the CW-MFC is able to remove 75% of COD form wastewater with 1500mgl -1 initial concentration of dye. The maximum power density of 15.73mWm -2 and maximum current density of 69.75mAm -2 could be achieved during treatment of 1000mgl -1 initial dye concentration containing wastewater. © 2012 Elsevier B.V.