US7833668-B2  "Low Cost, Compact Solid Oxide Fuel Cell Generator," NASA Small Business Innovation Research Program.;  "Low Cost, High Efficiency Reversible Fuel Cell (and Electrolyzer) Systems," Proceedings of the 2001 DOE Hydrogen Program Review NREL/CP-570-30535, 8 pgs.;  "Small, Ultra Efficient Fuel Cell Systems," Advanced Technology Program ATP 2001 Competition (Jun. 2002), pp. 1-2.;  U.S. Appl. No. 60/924,874, filed Jun. 4, 2007, Ballantine et al.;  U.S. Appl. No. 10/653,240, filed Sep. 3, 2003, Sridhar et al.;  U.S. Appl. No. 11/124,120, filed May 9, 2005, Valensa et al.;  U.S. Appl. No. 11/188,118, filed Jul. 25, 2005, Levan et al.;  U.S. Appl. No. 11/188,120, filed Jul. 25, 2005, Levan et al.;  U.S. Appl. No. 11/188,123, filed Jul. 25, 2007, McElroy et al.;  U.S. Appl. No. 11/274,928, filed Nov. 16, 2005, Gottmann et al.;  U.S. Appl. No. 11/276,717, filed Mar. 10, 2006, Hickey et al.;  U.S. Appl. No. 11/491,487, filed Jul. 24, 2006, McElroy et al.;  U.S. Appl. No. 11/491,488, filed Jul. 24, 2006, McElroy et al.;  U.S. Appl. No. 11/730,256, filed Mar. 30, 2007, McElroy et al.;  "Type BPL Granular Carbon", Calgon Product Bulletin, Calgon Corporation, Activated Carbon Division, 2 pgs.;  Berlier, Karl et al., "Adsorption of CO2 on Microporous Materials. 1. On Activated Carbon and Silica Gel", J. Chem. Eng. Data, 1997, vol. 42, pp. 533-537.;  C.E. Milliken et al., "Low Cost, High Efficiency Reversible Fuel Cell Systems," Proceedings of the 2002 U.S. DOE Hydrogen Program Review, NREL/CP-610-32405, pp. 1-14.;  Cell and Stack Construction: Low-Temperature Cells, L.G. Austin, NASA SP-120, 1967.;  EG&G, Parsons, Inc., SAIC. Fuel Cell Handbook. 5th Edition. USDOE. Oct. 2000. 9-1-9-4; 9-12-9-14.;  F. Mitlitsky et al, Regenerative Fuel Cells for High Altitude Long Endurance Solar Powered Aircraft, 28th Intersociety Energy Conversion Engineering Conference (IECEC), Jul. 28, 1993, UCRL-JC-113485, pp. 1-8.;  F. Mitlitsky et al, "Unitized Regenerative Fuel Cells for Solar Rechargeable Aircraft and Zero Emission Vehicles," 1994 Fuel Cell Seminar, Sep. 6, 1994, UCRL-JC-117130, pp. 1-7.;  LeVan, M. Douglas et al., "Adsorption and Ion Exchange", Perry's Chemical Engineers' Handbook (7th Edition), 1997, 66 pgs.;  LeVan, M. Douglas et al., "Fixed-Bed Adsorption of Gases: Effect of Velocity Variations on Transition Types", AIChE Journal, vol. 34, No. 6, Jun. 1988, pp. 996-1005.;  M. P. King et al., "Concentration of Carbon Dioxide by a High-Temperature Electrochemical Membrane Cell," Journal of Applied Electrochemistry, vol. 15, No. 3 (1985), pp. 431-439.;  Manchado, M. Cabrejas et al., "Adsorption of H2, O2, CO, and CO2 on a ?-Alumina: Volumetric and Calorimetric Studies", Langmuir, vol. 10, 1994, pp. 685-691.;  Olivier, Marie-Georges et al., "Adsorption of Light Hyrdocarbons and Carbon Dioxide on Silica Gel", J. Chem. Eng. Data, 1997, vol. 42, pp. 230-233.;  Qi, Nan et al., "Adsorption equilibrium modeling for water on activated carbons", Carbon, vol. 43, 2005, pp. 2258-2263.;  R.C. Ruhl, "Low Cost Reversible Fuel Cell System," Proceedings of the 2000 U.S. DOE Hydrogen Program Review, Jun. 15, 2000, NREL/CP-570-28890, pp. 1-9.;  Rudisill, Edgar N. et al., "Coadsorption of Hydrocarbons and Water on BPL Activated Carbon", Ind. Eng. Chem. Res., 1992, vol. 31, pp. 1122-1130.;  S. Jensen et al., "High Temperature Electrolysis of Steam and Carbon Dioxide", Proceedings of Riso International Energy Conference, held at Riso National Laboratory, Denmark, May 19-21, 2003, Riso-R-1405(CN), pp. 204-215.;  Shaffer, Steven, "Development Update on Delphi's Solid Oxide Fuel Cell System", 2004 SECA Review Meeting, 34 pgs., http://www.netl.doe.gov/publications/proceedings/04/seca-wrkshp/Delphi%20-%20Shaffer.pdf.;  Sward, Brian K. et al., "Frequency Response Method for Measuring Mass Transfer Rates in Adsorbents via Pressure Perturbation", Adsorption, vol. 9, 2003, pp. 37-54.;  Sward, Brian K. et al., "Simple Flow-Through Apparatus for Measurement of Mass Transfer Rates in Adsorbent Particles by Frequency Response", Fundementals of Adsorption, K. Kaneko et al., eds., vol. 7, 2002, pp. 29-36. Published by IK International of Japan.;  Walton, Krista S. et al., "A Novel Adsorption Cycle for CO2 Recovery: Experimental and Theoretical Investigations of a Temperature Swing Compression Process", Revised Manuscript, submitted in 1995 to Separation Science&Technology, 30 pgs.;  Yang, Ralph T., "Adsorbents: Fundamentals and Applications", 2003, 4 pgs.;  Yong, Zou et al., "Adsorption of carbon dioxide at high temperature_a review", Separation and Purification Technology, vol. 26, 2002, pp. 195-205.;  Yong, Zou et al., "Adsorption of Carbon Dioxide on Basic Alumina at High Temperatures", J. Chem. Eng. Data, 2000, vol. 45, pp. 1093-1095.;  Zizelman, James et al., "Solid Oxide Fuel Cell Auxiliary Power Unit_A Development Update", SAE2002, World Congress, Mar. 4-7, 2002, SAE Technical Paper Series 2002-01-0411, 10 pgs.;  International Search Report dated Jul. 31, 2008 from corresponding International Application PCT/US2008/002410 (2 pgs.).