N-Doped Biochar as H2S Adsorbent for Biogas-Fueled SOFC

H. Setiawan, M. Sakamoto, T. Fujisaki, Y. Shiratori

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

To prevent performance degradation of biogas-fueled SOFC caused by H2S poisoning, this study aimed to develop a nitrogen (N)-doped carbon derived from biomass feedstock, which acted as an adsorbent of H2S. Biochar (BC) derived from rice husk (RH) treated with 25 vol% NH3gas at 900°C for 120 min, exhibited the largest H2S breakthrough capacity (ACPH2S(0)) of 8.02 mg H2S g- BC-1 and a total H2S adsorption capacity (ACPH2S) of 9.58 mg H2S g-BC-1. The largest ACPH2S, 23.0 mg H2S g-BC-1, was obtained for the RH-BC treated with NH3evaporated from a 10 wt% NH3solution (simulating a concentrated digested liquid) at 850°C for 270 min. For a mildly N-doped BC, the interaction of the surface with H2S was moderately weakened, preventing the blockage of micropore openings by the accumulation of sulfate.

Original languageEnglish
Title of host publication17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
PublisherIOP Publishing Ltd.
Pages1165-1176
Number of pages12
Edition1
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2021
Event17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021 - Stockholm, Sweden
Duration: Jul 18 2021Jul 23 2021

Publication series

NameECS Transactions
Number1
Volume103
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
Country/TerritorySweden
CityStockholm
Period7/18/217/23/21

All Science Journal Classification (ASJC) codes

  • General Engineering

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