Valorization of MSWI bottom ash for biogas desulfurization: Influence of biogas water content.
In this study an alternative valorization of Municipal Solid Waste Incineration (MSWI) Bottom Ash (BA) for H2S elimination from landfill biogas was evaluated. Emphasis was given to the influence of water content in biogas on H2S 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 CH4, CO2, O2, H2S and H2O in raw and treated biogas. The H2S removal efficiency of bottom ash was evaluated for different inlet biogas humidities: from 4 to 24gwater/m3. The biogas water content was found to greatly affect bottom ash efficiency regarding H2S removal. With humid inlet biogas the H2S removal was almost 3 times higher than with a dry inlet biogas. Best removal capacity obtained was 56gH2S/kgdryBA. A humid inlet biogas allows to conserve the bottom ash moisture content for a maximum H2S retention.
Université de Lyon, INSA-Lyon, DEEP Laboratory, EA7429, F-69621 Villeurbanne Cedex, France. Electronic address: marta.fontsere-obis@insa-lyon.fr.
Marta
M
Fontseré Obis
Université de Lyon, INSA-Lyon, DEEP Laboratory, EA7429, F-69621 Villeurbanne Cedex, France.
Patrick
P
Germain
Suez France, 16 Place de l'Iris, 92040 Paris la Défense, France.
Olivier
O
Troesch
Suez France, 16 Place de l'Iris, 92040 Paris la Défense, France.
Michel
M
Spillemaecker
Université de Lyon, INSA-Lyon, DEEP Laboratory, EA7429, F-69621 Villeurbanne Cedex, France.
Hassen
H
Benbelkacem
D000327:Adsorption; D056804:Biofuels / Q000032:analysis*; D060729:Coal Ash / Q000032:analysis*; D006813:Humidity; D006862:Hydrogen Sulfide / Q000737:chemistry*; D010865:Pilot Projects; D018505:Waste Management / Q000379:methods*; D014867:Water / Q000032:analysis*
D056804:Biofuels; D060729:Coal Ash; D014867:Water; D006862:Hydrogen Sulfide
Adsorption capacity; Circular economy; Hydrogen sulfide; Landfill biogas desulfurization; MSWI bottom ash reuse