TY - JOUR
T1 - Acidity Controlled Desulfurization of Biogas by Using Iron (III) and Ferrosoferric (II, III) Oxide
AU - Al Mamun, Muhammad Rashed
AU - Yusuf, Mohammad Abu
AU - Murshed Bhuyan, Md
AU - Shohag Hossain Bhuiyan, Md
AU - Azharul Arafath, Md
AU - Nizam Uddin, Md
AU - Janibul Alam Soeb, Md
AU - Almahri, Albandary
AU - Rahman, Mohammed M.
AU - Karim, Mohammad Razaul
N1 - Publisher Copyright:
© 2022 The Chemical Society of Japan.
PY - 2022
Y1 - 2022
N2 - Removal of hydrogen sulfide (H2S) from raw biogas is essential for feeding the refined gas with high methane (CH4) content in engines and combustion units. In small-scale farmhouses and power plants, a cheap, inexpensive, and facile desulfurization process is needed. Herein, the desulfurization process of biogas by treating with Fe2O3 and nanoscaled Ferrosoferric oxide (FeF) suspension is presented. The treatment process includes both the chemical reaction and physical adsorption phenomena. With variable pH and treatment duration, efficient desulfurization of the biogas was achieved. The optimum pH for H2S removal was 5 at which the removal efficiency was 97% for Fe2O3 solution and 95% for FeF solution. Respectively, CH4 content increased above 75%. The H2S-concentration dropped by 50 ppm from the initial value. The H2S content in the purified gas is thus reduced below the recommended limit for running internal combustion engines. We suggest some physicochemical elimination of the H2S fraction. The process might be feasible to utilize in small farmhouses and power units.
AB - Removal of hydrogen sulfide (H2S) from raw biogas is essential for feeding the refined gas with high methane (CH4) content in engines and combustion units. In small-scale farmhouses and power plants, a cheap, inexpensive, and facile desulfurization process is needed. Herein, the desulfurization process of biogas by treating with Fe2O3 and nanoscaled Ferrosoferric oxide (FeF) suspension is presented. The treatment process includes both the chemical reaction and physical adsorption phenomena. With variable pH and treatment duration, efficient desulfurization of the biogas was achieved. The optimum pH for H2S removal was 5 at which the removal efficiency was 97% for Fe2O3 solution and 95% for FeF solution. Respectively, CH4 content increased above 75%. The H2S-concentration dropped by 50 ppm from the initial value. The H2S content in the purified gas is thus reduced below the recommended limit for running internal combustion engines. We suggest some physicochemical elimination of the H2S fraction. The process might be feasible to utilize in small farmhouses and power units.
KW - Biogas methane enrichment
KW - Ferrosoferric oxide adsorbent
KW - Hydrogen sulfide removal
UR - http://www.scopus.com/inward/record.url?scp=85141339542&partnerID=8YFLogxK
U2 - 10.1246/bcsj.20220157
DO - 10.1246/bcsj.20220157
M3 - Article
AN - SCOPUS:85141339542
SN - 0009-2673
VL - 95
SP - 1234
EP - 1241
JO - Bulletin of the Chemical Society of Japan
JF - Bulletin of the Chemical Society of Japan
IS - 8
ER -