A farm-scale biogas desulfurization system was designed and tested for H2S removal efficiency from livestock biogas. This work assesses the H2S removal efficiency of a novel farm-scale biogas bio-desulfurization system (BBS) operated for 350 days on a 1,000-head pig farm. Experimental data demonstrated that suitable humidity and temperature can help sulfur-oxidizing bacteria to form active bio-films on the bio-carriers. The daily average removal rate increased to 879.16 from 337.75 g-H2S/d with an average inlet H2S concentration of 4,691 ± 1,532 mg/m3 in biogas. Thus, the overall (0–350 days) average H2S removal efficiency exceeded 93%. The proposed BBS overcomes limitations of H2S in biogas when utilizing pig farm biogas for power generation and other applications.
Hydrogen sulfide removal from livestock biogas by a farm-scale bio-filter desulfurization system
J.-J. Su, Y.-C. Chang, Y.-J. Chen, K.-C. Chang, S.-Y. Lee; Hydrogen sulfide removal from livestock biogas by a farm-scale bio-filter desulfurization system. Water Sci Technol 1 March 2013; 67 (6): 1288–1293. doi: https://doi.org/10.2166/wst.2013.696
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