In this study an alternative valorization of Municipal Solid Waste Incineration (MSWI) Bottom Ash (BA) for HS elimination from landfill biogas was evaluated. Emphasis was given to the influence of water content in biogas on HS removal efficiency by BA. A small-scale pilot was developed and implemented in a landfill site located in France. A new biogas analyzer was used and allowed real-time continuous measurement of CH, CO, O, HS and HO in raw and treated biogas. The HS removal efficiency of bottom ash was evaluated for different inlet biogas humidities: from 4 to 24g/m. The biogas water content was found to greatly affect bottom ash efficiency regarding HS removal. With humid inlet biogas the HS removal was almost 3 times higher than with a dry inlet biogas. Best removal capacity obtained was 56gHS/kgdryBA. A humid inlet biogas allows to conserve the bottom ash moisture content for a maximum HS retention.
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