Microbial Fuel Cell for Nitrate Reduction

Cucu, A.; Tiliakos, Athanasios; Tanase, Iulian; Serban, Cristina Elena; Stamatin, I.; Ciocănea, Adrian; Nichita, Cornelia

doi:10.1016/j.egypro.2015.12.286

Cited by 16 publications

(9 citation statements)

References 12 publications

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“…A wastewater stream with these characteristics can be used in bioelectrochemical systems for energy production by microbial fuel cells. With the use of microbial fuel cells, the initial concentration of nitrates of about 100 mg/L was reduced with an efficiency of 96% [55]. Another potential application of the obtained effluent is for cost-effective and ecofriendly microalgae cultivation for energetic purposes such as biodiesel or biomethane production [56].…”

Section: Efficiency Of Wastewater Treatment In the Gsbr 8h -Uf Systemmentioning

confidence: 99%

Treatment of Liquid Phase of Digestate from Agricultural Biogas Plant in a System with Aerobic Granules and Ultrafiltration

Świątczak

Cydzik‐Kwiatkowska

Zielińska

2019

Water

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Management of digestate from manure co-digestion with a very high chemical oxygen demand (COD) to nitrogen ratio and high nitrogen loads are a major bottleneck in the development of agricultural biogas plants. The liquid phase of digestate mixed with municipal wastewater was treated in aerobic granular sludge batch reactors at cycle lengths (t) of 6 h (GSBR6h), 8 h (GSBR8h), and 12 h (GSBR12h), corresponding to nitrogen loads of 1.6, 1.2, and 0.8 g/(L·d). Thauera sp., Lacibacter sp., Thermanaerothrix sp., and Planctomyces sp. predominated in granules favoring effective granule formation and nitrogen removal. Increasing cycle lengths (t) significantly decreased proteins in soluble fraction of extracellular polymeric substances (EPS) in granules and increased polysaccharides in tightly bound EPS that resulted in higher granule diameters and higher COD removal. In GSBR6h, heterotrophic nitrification/denitrification was very efficient, but ammonium was fully oxidized in the last hour of the cycle. So in further studies, the effluent from GSBR8h was subjected to ultrafiltration (UF) at transmembrane pressures (TMPs) of 0.3, 0.4, and 0.5 MPa. A GSBR8h-UF system (TMP of 0.4 MPa) ensured full removal of total Kjeldahl nitrogen (TKN), suspended solids, and substantial reduction of COD and color with good permeate flux. The NOx-rich (about 250 mg/L), clear permeate can be reused in line with assumptions of modern circular economy.

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Section: Efficiency Of Wastewater Treatment In the Gsbr 8h -Uf Systemmentioning

confidence: 99%

Treatment of Liquid Phase of Digestate from Agricultural Biogas Plant in a System with Aerobic Granules and Ultrafiltration

Świątczak

Cydzik‐Kwiatkowska

Zielińska

2019

Water

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“…A power density of 88 mW/m 2 was achieved at a current density of 310 mA/m 2 in a single compartment MFC. Organic pollution and nitrate removal efficiencies were 97 and 96%, respectively (Cucu et al, 2016 ).…”

Section: Alternative Electron Acceptorsmentioning

confidence: 99%

An Overview of Electron Acceptors in Microbial Fuel Cells

2017

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Microbial fuel cells (MFC) have recently received increasing attention due to their promising potential in sustainable wastewater treatment and contaminant removal. In general, contaminants can be removed either as an electron donor via microbial catalyzed oxidization at the anode or removed at the cathode as electron acceptors through reduction. Some contaminants can also function as electron mediators at the anode or cathode. While previous studies have done a thorough assessment of electron donors, cathodic electron acceptors and mediators have not been as well described. Oxygen is widely used as an electron acceptor due to its high oxidation potential and ready availability. Recent studies, however, have begun to assess the use of different electron acceptors because of the (1) diversity of redox potential, (2) needs of alternative and more efficient cathode reaction, and (3) expanding of MFC based technologies in different areas. The aim of this review was to evaluate the performance and applicability of various electron acceptors and mediators used in MFCs. This review also evaluated the corresponding performance, advantages and disadvantages, and future potential applications of select electron acceptors (e.g., nitrate, iron, copper, perchlorate) and mediators.

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“…Exoelectrons were stored as accumulated charge in double layer capacitance formed between the biofilm and the electrode; this can be estimated by measuring the average between anodic current and cathodic current [24]. By comparison to control reactors without AHLs, addition of short and long chain AHLs enhanced a high capacity to accept electrons and charge accumulation during bioelectrolysis (Fig.…”

Section: Enhanced Bioelectrochemical Properties Of Mecs By Ahlsmentioning

confidence: 99%