Biodiesel formulations as fuel for internally reforming solid oxide fuel cell

Nahar, Gaurav; Kendall, Kevin

doi:10.1016/j.fuproc.2011.02.015

Cited by 29 publications

(16 citation statements)

References 49 publications

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“…[30] Moreover, the upgraded bio-oil fed SOFC's stability is a promising as using liquid biofuel upgraded by hydrodeoxygenation process as fuel in a SOFC does not maintain stable cell voltage after more than 12 min. This result is at least satisfactory compared with several biodiesel formulations used as fuels in SOFC showing a stability time not exceeding 3 hours at higher temperatures (800°C).…”

Section: Stability Analysis Of the Sofc Fed By Upgraded Bio-oilmentioning

confidence: 99%

Investigation of Direct‐Fed Solid Oxide Fuel Cell Fueled by Upgraded Bio‐Oil Extracted from Olive Waste Pyrolysis: Part 2: Analysis of Electrochemical Behavior and Cell Performance

Elleuch

Halouani

2018

Energy Tech

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In this paper, we propose the first demonstration of the flexibility of operating directly Intermediate Temperature Solid Oxide Fuel Cell (IT‐SOFC) with liquid biofuels for sustainable clean power generation. Biofuel used in this part is prepared through an upgrading process of bio‐oil obtained from olive mill wastewater sludge detailed in part 1 and demonstrated a successful improvement in physicochemical properties. Cell electrochemical polarization behavior, stability and internal decomposition of upgraded bio‐oil over the Ni‐SDC anode at different operating conditions such as temperatures and feed flow rates were deeply investigated. Results showed that IT‐SOFC is able to convert the upgraded bio‐oil to electricity at viable power densities (230 mW cm−2 at 750 °C) which is majorly related to the production of reactive fuels (H2, CO, CH4) from upgraded bio‐oil cracking over Ni‐based catalyst. Several side reactions may also occur over anode. Reverse Boudouard reaction is the main reaction reducing deposits as it forms. Bio‐oil upgrading leads to a promising stability with limited carbon deposits (1.35 wt %) at 750 °C.

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Section: Stability Analysis Of the Sofc Fed By Upgraded Bio-oilmentioning

confidence: 99%

Investigation of Direct‐Fed Solid Oxide Fuel Cell Fueled by Upgraded Bio‐Oil Extracted from Olive Waste Pyrolysis: Part 2: Analysis of Electrochemical Behavior and Cell Performance

Elleuch

Halouani

2018

Energy Tech

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“…This reaction is called transesterification or esterification when using as catalyst hydroxides or acids, respectively [7,8]. Biodiesel is a promising alternative to conventional diesel fuel due to its renewable nature and the associated reduction in the emission of particles and greenhouse gases [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

The study of biodiesel production using CaO as a heterogeneous catalytic reaction

Colombo

Ender

Barros

2017

Egyptian Journal of Petroleum

117

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With the aim of developing a process of biodiesel production that is environmentally benign much interest has been focused on the use of solid base catalysts, such as calcium oxide, for the transesterification of vegetable oils with methanol. In the study reported herein a recycling reactor was used in bench scale, with the capacity to produce 3 L of biodiesel. The reactor was designed especially for this research study. A full 2 3 factorial plan was used to evaluate the process parameters related to this study, in particular, the catalyst concentration, the alcohol to oil molar ratio and the reaction time. Using this equipment for the transesterification reaction resulted in the recovery of the excess alcohol. The reaction products were characterized using gas chromatography and liquid analysis to determine the ester and calcium concentrations, respectively. The main conclusions drawn were that the best conversion percentage (100% of biodiesel) was reached when the methanol:oil molar ratio was 6:1, the reaction time was 75 min and the catalyst mass was 3% in relation to the oil mass used in this process. The CaO concentration determined exceeded the limit of concentration defined by legislation and thus a secondary operation was carried out to purify the reaction products obtained. The results of this study showed a high performance, and the proposed experiment could be used as a new and innovative way to produce biodiesel in the future.

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“…Nahar and Kendall also tested a micro‐tubular SOFC fueled by emulsified biodiesel fuel prepared from rapeseed oil. They reported a peak power density of ∼1,500 W m −2 at 800 °C and a stability of around 60 h using the biodiesel/water mixture with a higher steam ratio.…”

Section: Introductionmentioning

confidence: 99%

Exploration of Complex Electrochemical and Chemo‐mechanical Behavior of Solid Oxide Fuel Cell Fueled with Pyrolysis Bio‐oil

Elleuch

Halouani

2018

Fuel Cells

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Direct utilization of olive mill wastewater sludge (OMWS) bio‐oil prepared via fast pyrolysis in a Direct‐Biofuel Solid Oxide Fuel Cell (DB‐SOFC) was investigated. A viable power densities (>1,000 W m−2 at 650 °C) and 6 h operation under open circuit conditions were obtained despite crude bio‐oil complex chemistry. When heated, bio‐oil decomposes yielding gases, volatiles and solid residues (biochar). At 650 °C, polarization curve and impedance spectra of SOFC fed by bio‐oil showed peculiar shapes related to complex kinetics and charge transfer mechanism within the anode. The carbon accumulation at 650 °C is managed through oxidations with oxide ions and chemical reaction with CO2 and H2O gases. Above 700 °C, performance degradation was noted related to biochar accumulation at the anode though the promotion of Boudouard reaction, the increase in O2− transfer and possible carbon electrochemical oxidations. The anode chemo‐mechanical instability was observed explaining the rise in cell ohmic resistance and performance degradation after 6 operating hours. Globally, this work demonstrates that direct fed SOFCs with OMWS bio‐oil is achievable using Ni‐SDC anode but enhancement in fuel quality and in anode catalytic activity and stability are required to improve significantly the cell performance.

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Biodiesel formulations as fuel for internally reforming solid oxide fuel cell

Cited by 29 publications

References 49 publications

Investigation of Direct‐Fed Solid Oxide Fuel Cell Fueled by Upgraded Bio‐Oil Extracted from Olive Waste Pyrolysis: Part 2: Analysis of Electrochemical Behavior and Cell Performance

Investigation of Direct‐Fed Solid Oxide Fuel Cell Fueled by Upgraded Bio‐Oil Extracted from Olive Waste Pyrolysis: Part 2: Analysis of Electrochemical Behavior and Cell Performance

The study of biodiesel production using CaO as a heterogeneous catalytic reaction

Exploration of Complex Electrochemical and Chemo‐mechanical Behavior of Solid Oxide Fuel Cell Fueled with Pyrolysis Bio‐oil

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