Performance characterization of a novel Fe-based sorbent for anaerobic gas desulfurization finalized to high temperature fuel cell applications

摘要: Abstract A novel sorbent (SCX) composed of mixed iron oxides and hydroxides was studied to assess its suitability for H 2 S removal from biogas finalized high temperature fuel cell systems. From an industrial point view, the potential usage this product would have a beneficial impact on operational costs, since it is less expensive than activated carbons. Moreover, non-hazardous landfilled with reduced environmental can be easily regenerated. Sorbent SCX tested in different operative conditions, evaluating influence sorption capacity gas hourly space velocity (GHSV), composition (inlet concentration, matrix, humidity), reactor filter geometry. As main outcomes, experimentation highlighted: i) hyperbolic increase adsorption as GHSV decreased, ii) parabolic performance enhancement increasing iii) negative effect humidity. comparison commercial carbons typically used same purpose (Cu–Cr or KOH–KI treated) performed, identifying optimal parameters obtain higher sorbent. Specifically, showed terms lower 330 h −1 , values particular interest many practical applications. In case, improved capability obtained respect ones exhibited by considered quantitative evaluations provided unitary installed power (1 kW e cell-based systems) highlighted possibility more compact (volume reduction about 50%) cheaper (cost up six times) filters.