Investigation of NH₃ Influence on Adsorptive H₂S Removal from Biogas for Solid Oxide Fuel Cell Application

Abstract

The generation of electrical energy from biogas is state of the art. One option is the application of fuel cells for generating electrical energy. Due to their construction, the materials used and their mode of operation, solid oxide fuel cells (SOFCs) are particularly suitable. The primary problem in the operation of SOFCs using biogas is H2S. The goal of this work is to investigate the possible effects of ammonia on different sorbents that have already successfully been used for the desulfurization of biogas. The H2S adsorption capacity of four commercially available sorbents in the presence of NH3 was investigated as well as the influence of an upstream NH3 removal. The CuO‐MnO‐based sorbent showed the best performance related to sulfur uptake.