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Malevich D, Halliop E, Peppley B, Pharoah J, Karan K. Effect of Relative Humidity on Electrochemical Active Area and Impedance Response of PEM Fuel Cell. ACTA ACUST UNITED AC 2019. [DOI: 10.1149/1.2982017] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lackey J, Champagne P, Peppley B. Use of wastewater treatment plant biogas for the operation of Solid Oxide Fuel Cells (SOFCs). J Environ Manage 2017; 203:753-759. [PMID: 27639301 DOI: 10.1016/j.jenvman.2016.09.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 08/25/2016] [Accepted: 09/01/2016] [Indexed: 06/06/2023]
Abstract
Solid Oxide Fuel Cells (SOFCs) perform well on light hydrocarbon fuels, and the use of biogas derived from the anaerobic digestion (AD) of municipal wastewater sludges could provide an opportunity for the CH4 produced to be used as a renewable fuel. Greenhouse gas (GHG), NOx, SOx, and hydrocarbon pollutant emissions would also be reduced. In this study, SOFCs were operated on AD derived biogas. Initially, different H2 dilutions were tested (N2, Ar, CO2) to examine the performance of tubular SOFCs. With inert gases as diluents, a decrease in cell performance was observed, however, the use of CO2 led to a higher decrease in performance as it promoted the reverse water-gas shift (WGS) reaction, reducing the H2 partial pressure in the gas mixture. A model was developed to predict system efficiency and GHG emissions. A higher electrical system efficiency was noted for a steam:carbon ratio of 2 compared to 1 due to the increased H2 partial pressure in the reformate resulting from higher H2O concentration. Reductions in GHG emissions were estimated at 2400 tonnes CO2, 60 kg CH4 and 18 kg N2O. SOFCs were also tested using a simulated biogas reformate mixture (66.7% H2, 16.1% CO, 16.5% CO2, 0.7% N2, humidified to 2.3 or 20 mol% H2O). Higher humidification yielded better performance as the WGS reaction produced more H2 with additional H2O. It was concluded that AD-derived biogas, when cleaned to remove H2S, Si compounds, halides and other contaminants, could be reformed to provide a clean, renewable fuel for SOFCs.
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Affiliation(s)
- Jillian Lackey
- Department of Civil Engineering, Queen's University, Ellis Hall, 58 University Ave., Kingston, ON, K7L 3N6, Canada; Queen's - RMC Fuel Cell Research Centre, Queen's Innovation Park, 945 Princess Street, Second Floor, Kingston, ON, K7L 3N6, Canada
| | - Pascale Champagne
- Department of Civil Engineering, Queen's University, Ellis Hall, 58 University Ave., Kingston, ON, K7L 3N6, Canada; Queen's - RMC Fuel Cell Research Centre, Queen's Innovation Park, 945 Princess Street, Second Floor, Kingston, ON, K7L 3N6, Canada; Department of Chemical Engineering, Queen's University, 19 Division St., Kingston, ON, K7L 3N6, Canada.
| | - Brant Peppley
- Queen's - RMC Fuel Cell Research Centre, Queen's Innovation Park, 945 Princess Street, Second Floor, Kingston, ON, K7L 3N6, Canada; Department of Chemical Engineering, Queen's University, 19 Division St., Kingston, ON, K7L 3N6, Canada
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Lackey JC, Peppley B, Champagne P, Maier A. Composition and uses of anaerobic digestion derived biogas from wastewater treatment facilities in North America. Waste Manag Res 2015; 33:767-771. [PMID: 26092257 DOI: 10.1177/0734242x15589781] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A study was conducted to determine the current knowledge of biogas production and its use at municipal wastewater treatment plants (WWTPs) across North America. Information was provided by municipal WWTPs across Canada and the US. It was determined that hydrogen sulfide (H2S) and silicon (Si) compounds had sufficient variability to be of concern. The only biogas production trend that could be identified was a possible seasonal relationship with sludge input and biogas production. Secondary analysis was performed to observe trends in biogas usage in urban areas larger than 150,000 in the US and 50,000 in Canada; 66% of facilities had anaerobic digestion systems and, of those, only 35% had an energy recovery system. Climatic, population, and socio-political influences on the trends were considered. The primary conclusion was that more data is required to perform significant analyses on biogas production and composition variation.
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Affiliation(s)
| | - B Peppley
- Queen's University, Kingston, ON, Canada
| | | | - A Maier
- Queen's University, Kingston, ON, Canada
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Wan Y, Creber KAM, Peppley B, Tam Bui V. Ionic conductivity and tensile properties of hydroxyethyl and hydroxypropyl chitosan membranes. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/polb.20007] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Wan Y, Creber KAM, Peppley B, Bui VT. Synthesis, Characterization and Ionic Conductive Properties of Phosphorylated Chitosan Membranes. MACROMOL CHEM PHYS 2003. [DOI: 10.1002/macp.200390056] [Citation(s) in RCA: 126] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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