Economic assessment of a solid oxide fuel cell system for biogas utilization in sewage plants

Hauptmeier, Karl; Penkuhn, Mathias; Tsatsaronis, George

doi:10.1016/j.energy.2016.05.072

Cited by 31 publications

(9 citation statements)

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“…One promising method for the valorization of wash waters generated during the purification of olive oil is the production of biogas. Pilot scale experiences have been already successfully tested (Hauptmeier et al, 2016). Although biogas production is a very promising method, one constraint of this technology is the need for different upgrading methods in order to use the obtained biogas.…”

Section: Introductionmentioning

confidence: 99%

Suitability of olive oil washing water as an electron donor in a feed batch operating bio-electrochemical system

et al. 2017

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SUMMARY:Olive oil washing water derived from the two-phase manufacturing process was assessed as an electron donor in a bio-electrochemical system (BES) operating at 35 ºC. Start-up was carried out by using acetate as a substrate for the BES, reaching a potential of around +680 mV. After day 54, BES was fed with olive oil washing water. The degradation of olive oil washing water in the BES generated a maximum voltage potential of around +520 mV and a Chemical Oxygen Demand (COD) removal efficiency of 41%. However, subsequent loads produced a decrease in the COD removal, while current and power density diminished greatly. The deterioration of these parameters could be a consequence of the accumulation of recalcitrant or inhibitory compounds, such as phenols. These results demonstrated that the use of olive oil washing water as an electron donor in a BES is feasible, although it has to be further investigated in order to make it more suitable for a real application. KEYWORDS: Bio-electrochemical system; COD removal; Electricity generation; Electron donor; Olive oil washing watersRESUMEN: Idoneidad del agua de lavado de aceites de oliva como donador de electrones en un sistema alimentado por lotes bioelectroquímico. El agua de lavado del aceite de oliva procedente del proceso de elaboración en dos fases fue utilizada como donador de electrones en un Sistema Bioelectroquímico (BES) operado a 35ºC. Se realizó una etapa de arranque del sistema mediante alimentación con acetato, alcanzando un potencial de referencia de +680 mV. Tras 54 días, el sistema se alimentó con agua de lavado de aceite, generando un potencial máximo de +520 mV y una eliminación de materia del 41%, en demanda química de oxígeno. Sin embargo, cargas subsecuentes conllevaron una bajada en la eliminación de materia, mientras que la densidad de corriente y de potencia disminuyeron ostensiblemente. El empeoramiento de estos parámetros puede deberse a la acumulación de compuestos recalcitrantes o inhibidores, como fenoles. Por tanto, el uso del agua de lavado de aceite de oliva en un BES es factible, aunque es necesario llevar a cabo nuevas investigaciones que hagan más atractiva su aplicación a escala real. Citation/Cómo citar este artículo: Fermoso FG, Fernández-Rodríguez MJ, Jiménez-Rodríguez A, Serrano A, Borja R. 2017. Suitability of olive oil washing water as an electron donor in a feed batch operating bio-electrochemical system. Grasas Aceites 68 (2), e198. http://dx

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Section: Introductionmentioning

confidence: 99%

Suitability of olive oil washing water as an electron donor in a feed batch operating bio-electrochemical system

et al. 2017

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“…Several previous studies demonstrated that various types of fuels can be converted into hydrogen‐rich gas without using an external fuel processor . In order to prevent the accelerated degradation, operation in DIR‐SOFC mode requires additional means to control temperature distribution at the level of the single cell and the complete stack . For that reason, external fuel processors are commonly used to generate gas in order to supply the anodic compartments of fuel cell stacks.…”

Section: Introductionmentioning

confidence: 99%

Kinetic model of a plate fin heat exchanger with catalytic coating as a steam reformer of methane, biogas, and dimethyl ether

et al. 2019

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Summary The paper presents an analysis of a compact plate fin heat exchanger with catalytic coating. The unit is used to convert various fuels into hydrogen‐rich gas, which is then fed into the anodic compartments of a solid oxide fuel cell (SOFC) stack. The study looks at the fuel processor for methane, biogas, and dimethyl ether (DME). In the first phase, the reaction kinetics model was based on data from the literature. This was followed by tuning and validation of the numerical model using data collected during an experimental campaign. Four values of the steam to carbon ratio (2.0, 2.5, 3.0, and 3.5) were used to analyze the performance of the heat exchanger, which was investigated in a temperature range of 500°C to 750°C. The experimental data are compared with predictions of the model implemented in Aspen HYSYS modeling software and discussed. It was found that the relative prediction error of the simulator does not exceed 3.5%.

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“…Instead, SOFC development has focused on discovering and exploiting new electrocatalytic materials capable of efficiently converting carbon containing fuels and fuel mixtures into electricity and products. These carbon containing fuels, including alcohols, are abundant in nature, and have the ability to be derived from renewable biological processes . The renewable aspect of these fuels is significant, because coupling renewable fuels with SOFC's high conversion efficiencies can lead to more environmentally friendly energy devices with minimal carbon foot prints.…”

Section: Introductionmentioning

confidence: 99%

“…These carbon containing fuels, including alcohols, are abundant in nature, and have the ability to be derived from renewable biological processes. [21][22][23] The renewable aspect of these fuels is significant, because coupling renewable fuels with SOFC's high conversion efficiencies can lead to more environmentally friendly energy devices with minimal carbon foot prints. Alcohol fuels also have other advantages in SOFC applications: 1) they have higher energy densities than gaseous fuels, 2) being in the liquid state at room temperatures and pressure, they are easier to store, and 3) being a oxygenated polar liquids, these fuels undergo internal reformation to provide higher conversion efficiencies.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical and Operando Spectroscopic Studies of Sr₂Fe_1.5Mo_0.5O_6‐δ Anode Catalysts in Solid Oxide Fuel Cells Operating with Direct Alcohol Fuels

et al. 2018

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A combination of operando Raman spectroscopy and chronoamperometry was used to examine the carbon tolerance of Sr2Fe1.5Mo0.5O6‐δ (SFMO) electrode catalysts when operating with direct methanol and ethanol fuels in solid oxide fuel cells (SOFCs). Chronoamperometry studies revealed that these devices could maintain a steady power density output under typical SOFC operating conditions. High‐temperature Raman measurements of SFMO coupons exposed to methanol and ethanol (and their gas phase pyrolysis products) showed the presence of spectroscopic features associated with ordered and disordered forms of graphitic carbon. However, once SFMO was employed as an anode in an electrolyte‐supported SOFC, the graphite features disappear implying that these materials are not susceptible to carbon accumulation in functioning devices. These electrochemical and operando Raman measurements provided insight into SFMO's ability to act as an effective anode catalyst for SOFCs operating with direct alcohol fuel sources.

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Economic assessment of a solid oxide fuel cell system for biogas utilization in sewage plants

Cited by 31 publications

References 20 publications

Suitability of olive oil washing water as an electron donor in a feed batch operating bio-electrochemical system

Suitability of olive oil washing water as an electron donor in a feed batch operating bio-electrochemical system

Kinetic model of a plate fin heat exchanger with catalytic coating as a steam reformer of methane, biogas, and dimethyl ether

Electrochemical and Operando Spectroscopic Studies of Sr₂Fe_1.5Mo_0.5O_6‐δ Anode Catalysts in Solid Oxide Fuel Cells Operating with Direct Alcohol Fuels

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Economic assessment of a solid oxide fuel cell system for biogas utilization in sewage plants

Cited by 31 publications

References 20 publications

Suitability of olive oil washing water as an electron donor in a feed batch operating bio-electrochemical system

Suitability of olive oil washing water as an electron donor in a feed batch operating bio-electrochemical system

Kinetic model of a plate fin heat exchanger with catalytic coating as a steam reformer of methane, biogas, and dimethyl ether

Electrochemical and Operando Spectroscopic Studies of Sr2Fe1.5Mo0.5O6‐δ Anode Catalysts in Solid Oxide Fuel Cells Operating with Direct Alcohol Fuels

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Electrochemical and Operando Spectroscopic Studies of Sr₂Fe_1.5Mo_0.5O_6‐δ Anode Catalysts in Solid Oxide Fuel Cells Operating with Direct Alcohol Fuels