Microaeration for H2S removal
The micro-aeration technique provided just enough oxygen to partially oxidize sulfides to elemental sulfur without inhibiting methanogenesis. The integrated system was capable of reducing hydrogen sulfide in biogaswith minimal sulfate production. More than 98% of sulfide removed was recovered as elemental sulfur. This technology will widen the use of biogas as a renewable energy since the maintenance of downstream processes, the biogas purification requirement, and the production of SOx will dramatically be reduced. Importantly, the technology does not require inoculation of special bacteria, addition of nutrients and trace element, or pH control.
- Simple, highly efficient, and stable method for H2S removal from the biogas.
- High H2S removal efficiency (99%) at high initial H2S concentration (4,000 mg m-3).
