NDLI: Effect of S/N Ratio on the Removal of Hydrogen Sulfide from Biogas in Anoxic Bioreactors

Content Provider	Springer Nature Link
Author	Li, Xi Jiang, Xia Zhou, Qiying Jiang, Wenju
Copyright Year	2016
Abstract	Both biogas desulfurization and wastewater denitrification can be achieved simultaneously, when nitrate/nitrite is used as the electron acceptor for H$_{2}$S oxidation. The main objective of this study was to investigate the influence of the molar ratio of sulfide/nitrate (S/N) on biogas desulfurization performance in a biotrickling filter (BTF) and a biobubble column (BBC). The results show that with the decrease of the S/N ratios from 3.6 to 0.7, the removal efficiencies of H$_{2}$S increased from about 66 to 100 %, while the removal of nitrate decreased from 100 to 70 % in the two bioreactors. The BTF has a better and more stable desulfurization performance than the BBC does, which could be attributed to their different gas-liquid contacting modes. With the increase of the S/N ratios from 1.0 to 2.5 in the BTFs, the removal of H$_{2}$S in biogas was affected slightly, while the percentages of the produced sulfate decreased evidently. In addition, different supplying methods of nitrate wastewater, i.e., intermittent and continuous, did not affect the removal of H$_{2}$S significantly, while the intermittent addition of nitrate wastewater increased the percentages of sulfate and denitrification performance.
Starting Page	930
Ending Page	944
Page Count	15
File Format	PDF
ISSN	02732289
Journal	Applied Biochemistry and Biotechnology
Volume Number	180
Issue Number	5
e-ISSN	15590291
Language	English
Publisher	Springer US
Publisher Date	2016-05-23
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydrogen sulfide Biogas Desulfurization S/N ratio Nitrate wastewater Biotechnology Biochemistry
Content Type	Text
Resource Type	Article
Subject	Medicine Molecular Biology Environmental Engineering Biochemistry Bioengineering Applied Microbiology and Biotechnology Biotechnology

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