Open AccessThe effect of H 2 S on internal dry reforming in biogas fuelled solid oxide fuel cells
Author(s) -
Wasajja Henry,
Saadabadi S. Ali,
Illathukandy Biju,
Lindeboom Ralph E. F.,
Lier Jules. B.,
Vellayani Aravind Purushothaman
Publication year - 2022
Publication title -
energy science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.638
H-Index - 29
ISSN - 2050-0505
DOI - 10.1002/ese3.1021
Subject(s) - biogas , carbon dioxide reforming , methane , solid oxide fuel cell , waste management , methane reformer , materials science , chemical engineering , syngas , catalysis , chemistry , electrolyte , steam reforming , engineering , hydrogen production , biochemistry , organic chemistry , electrode
Internal dry reforming of methane is envisaged as a possibility to reduce on capital and operation costs of biogas fuelled solid oxide fuel cells (SOFCs) system by using the CO 2 present in the biogas. Due to envisaged internal dry reforming, the requirement for biogas upgrading becomes obsolete, thereby simplifying the system complexity and increasing its technology readiness level. However, impurities prevailing in biogas such as H 2 S have been reported in literature as one of the parameters which affect the internal reforming process in SOFCs. This research has been carried out to investigate the effects of H 2 S on internal dry reforming of methane on nickel‐scandia‐stabilised zirconia (Ni‐ScSZ) electrolyte supported SOFCs. Results showed that at 800°C and a CH 4 :CO 2 ratio of 2:3, H 2 S at concentrations as low as 0.125 ppm affects both the catalytic and electric performance of a SOFC. At 0.125 ppm H 2 S concentration, the CH 4 reforming process is affected and it is reduced from over 95% to below 10% in 10 h. Therefore, future biogas SOFC cost reduction seems to become a trade‐off between biogas upgrading for CO 2 removal and biogas cleaning of impurities to facilitate efficient internal dry reforming.