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Explains the adsorption processes for the removal of the components that can damage or reduce the efficiency of the FCs
Includes information useful for designing biogas fuel systems for MCFCs or SOFCs
Covers the characterization of the chemical and physical properties involved
High temperature Fuel Cells, such as molten carbonates (MCFC) or solid oxides (SOFC) are efficient, with a low environmental impact and can use a variety of fuels, such as biogas. The presence of some poisonous compounds such as sulphides, halides and siloxanes can react with electrodes catalysts and electrolyte leading to the degradation and short lifetime of the cell. The treatment of raw biogas to obtain a FC compatible fuel are mainly based on adsorption processes on suitable materials. This book reports the most recent applications of these processes with attention to the source and the properties of the biogas and to the characteristics of the FCs. The adsorbing materials of potential interest are reviewed and the preparation methods and treatments aimed to improve the adsorption properties, the stability and regenerability are described. The characterization of the chemical and physical properties involved in these processes is specifically examined. The aspects that concern the development of the adsorption apparatus are considered with particular attention to the target of low residual concentration and high selectivity.
Content Level »Research
Keywords »Adsorption Processes and Adsorbent Materials - Biogas Production - Fuel Reforming - High Temperature Fuel Cells - Molten Carbonates Fuel Cells - Noxious Components - Solid Oxides Fuel Cells
Processes of biogas production: fermentation, digestion, thermal gasification.- High temperature fuel cells: structural and operating features of MCFCs and SOFCs.- Fuel reforming processes.- Internal and external reformer.- Applications of MCFCs and SOFCs: new challenges.- Biogas as fuel for MCFCs and SOFCs.- The problem of noxious components: sulphur compounds, halides, siloxanes.- Current technologies for removal of noxious compounds.- Adsorption processes and adsorbent materials.- Microporous materials.- Characterization of adsorption performances.- Zeolites and active carbons.- Preparation and functionalization.- Characterization of physical and chemical properties.- Stability and regeneration.- Development of adsorption apparatus for biogas treatment.