Impact of an external electron acceptor on phosphorus mobility between water and sediments

Martins, Gilberto; Peixoto, L.; Teodorescu, Sofia; Parpot, Píer; Nogueira, R.; Brito, A. G.

doi:10.1016/j.biortech.2013.10.048

Cited by 39 publications

(18 citation statements)

References 19 publications

(31 reference statements)

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“…Based on those results, it was decided to change the external resistor from 500 U to 80 U. This change had the purpose of the optimize power production once that the optimum external resistance is the resistance for which the maximum power density was obtained (Martins et al, 2014).…”

Section: Mfc Operationmentioning

confidence: 99%

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Resources recovery in the dairy industry: bioelectricity production using a continuous microbial fuel cell

Faria

Gonçalves

Peixoto

et al. 2017

Journal of Cleaner Production

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a b s t r a c tThe increasing food demand and the exhaustion of non-renewable fuels provide new market opportunities in the agro-farming sector. Biological systems designed to add value to useless organic subproducts and to generate off-grid electricity may be one of the most interesting outcomes. Therefore, the capacity of some microorganisms to transfer electrons generated during organic carbon oxidation directly to an anode in a so-called microbial fuel cell (MFC) might be an asset in a sustainable management context. In this regard, the main goal of the present work was to evaluate the performance of a continuous MFC applied in a dairy industry. A maximum voltage of 576 mV was produced during continuous operation, corresponding to a power density of 92.2 mW m À2 or 1.9 W m À3 . MFC was able to remove 1298 ± 617 mg L À1 of chemical oxygen demand (COD) at a hydraulic retention time of 8.4 h, and the maximum COD removal (63 ± 5%) was achieved after 20 days of continuous operation. In addition, the coulombic efficiency average was around 10.5 ± 10% with a maximum of 24.2 ± 1.5%. In average, the MFC was able to extract a specific energy of 8.95 Â 10 À2 kW h kg À1 COD with a maximum output of 20.53 Â 10 À2 kW h kg À1 COD. In conclusion, the MFC technology is a valuable option for simultaneous wastewater treatment and energy recovery and deserves to be tested and scaled-up in the dairy industry.

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Section: Mfc Operationmentioning

confidence: 99%

“…Data were collected automatically and stored in a computer by a USB-9215A BNC connector data logger (National Instruments) and a data acquisition software (Labview 6.0) (Martins et al, 2014). Electrochemical analysis was performed according to Martins et al (2010).…”

Section: Electrochemical and Chemical Analysismentioning

confidence: 99%

Resources recovery in the dairy industry: bioelectricity production using a continuous microbial fuel cell

Faria

Gonçalves

Peixoto

et al. 2017

Journal of Cleaner Production

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“…As repositories of the overlying water body (e.g., oceans, lakes, rivers, or reservoirs), sediments are usually composed of organic and inorganic materials and shelter a complex microbial ecosystem that thrives on several different electron donors and acceptors12.…”

mentioning

confidence: 99%

A Pilot-scale Benthic Microbial Electrochemical System (BMES) for Enhanced Organic Removal in Sediment Restoration

Tian²,

et al. 2017

Sci Rep

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A benthic microbial electrochemical systems (BMES) of 195 L (120 cm long, 25 cm wide and 65 cm height) was constructed for sediment organic removal. Sediment from a natural river (Ashi River) was used as test sediments in the present research. Three-dimensional anode (Tri-DSA) with honeycomb structure composed of carbon cloth and supporting skeleton was employed in this research for the first time. The results demonstrated that BMES performed good in organic-matter degradation and energy generation from sediment and could be considered for river sediments in situ restoration as novel method. Community analysis from the soil and anode using 16S rDNA gene sequencing showed that more electrogenic functional bacteria was accumulated in anode area when circuit connected than control system.

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“…So far, there was no visible loss determined by the naked eye. Once the electrode is optimised a costs benchmark can be done by comparing with more often used electrodes like stainless steel or graphite felt in a similar designed comparable operated system [66][67][68]. Results also showed that the EAB also increased the PU/AC conductivity.…”

Section: Pu/ac Work As a Bioanode And Likely Electrochemically Activmentioning

confidence: 99%

A Thin Layer of Activated Carbon Deposited on Polyurethane Cube Leads to New Conductive Bioanode for (Plant) Microbial Fuel Cell

et al. 2020

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Large-scale implementation of (plant) microbial fuel cells is greatly limited by high electrode costs. In this work, the potential of exploiting electrochemically active self-assembled biofilms in fabricating three-dimensional bioelectrodes for (plant) microbial fuel cells with minimum use of electrode materials was studied. Three-dimensional robust bioanodes were successfully developed with inexpensive polyurethane foams (PU) and activated carbon (AC). The PU/AC electrode bases were fabricated via a water-based sorption of AC particles on the surface of the PU cubes. The electrical current was enhanced by growth of bacteria on the PU/AC bioanode while sole current collectors produced minor current. Growth and electrochemical activity of the biofilm were shown with SEM imaging and DNA sequencing of the microbial community. The electric conductivity of the PU/AC electrode enhanced over time during bioanode development. The maximum current and power density of an acetate fed MFC reached 3 mA·m−2 projected surface area of anode compartment and 22 mW·m−3 anode compartment. The field test of the Plant-MFC reached a maximum performance of 0.9 mW·m−2 plant growth area (PGA) at a current density of 5.6 mA·m−2 PGA. A paddy field test showed that the PU/AC electrode was suitable as an anode material in combination with a graphite felt cathode. Finally, this study offers insights on the role of electrochemically active biofilms as natural enhancers of the conductivity of electrodes and as transformers of inert low-cost electrode materials into living electron acceptors.

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Impact of an external electron acceptor on phosphorus mobility between water and sediments

Cited by 39 publications

References 19 publications

Resources recovery in the dairy industry: bioelectricity production using a continuous microbial fuel cell

Resources recovery in the dairy industry: bioelectricity production using a continuous microbial fuel cell

A Pilot-scale Benthic Microbial Electrochemical System (BMES) for Enhanced Organic Removal in Sediment Restoration

A Thin Layer of Activated Carbon Deposited on Polyurethane Cube Leads to New Conductive Bioanode for (Plant) Microbial Fuel Cell

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