Abstract
When biogas is used it is needed to remove hydrogen sulfide economically and efficiently, it is thought that biological desulfurization using microbes in digested slurry is effective. However, detailed examination on the usage of digested slurry has not been reported. The objective of this study is to clarify the most effective arrangement for desulfurization when using digested slurry in small scale experiments.
The 0.24 m3 reaction pipe made of PVC was used as an experimental equipment, and carriers were installed inside. Digested slurry was sprayed into the equipment by a nozzle using a pump. Hydrogen sulfide concentration was measured before and after the desulfurization by a densimeter, and the effect was evaluated by desulfurization rate.
The system of filling the carrier obtained high desulfurization rate, and improved the effect by combining a spray system. This result suggested that contant efficiency between biogas and digested slurry was raised by using the fine mists generated from spraying digested slurry and it became possible to supply moisture and nutrition on the surface of carriers effectively.
