This study investigates the suitability of continuous hybrid fixed bed anaerobic filter reactor for treating sewage and agro-industrial digestate hydrothermal carbonization (HTC) products; hydrochar and HTC liquor (HTCL). The reactor was operated for 300 days under mesophilic conditions at different organic loading rates (OLR); maximum OLRs of 7.4 and 10 gCOD/L/d were reached while treating HTC liquor and slurry, respectively. 15 g/L hydrochar were added to the reactor as a supplement while treating HTCL solely thus increasing the biogas production up to 153%. The reactor was fed with HTCL and hydrochar with an increasing mixing ratio, and the co-digestion impact was dependent on hydrochar concentrations. The results of the study indicate that the hybrid fixed bed anaerobic filter reactor is a promising anaerobic digestion configuration for treating HTCL and overcoming the HTC upscaling challenges, and the suitability of digestate hydrochar utilization as supplement material for anaerobic digestion.

Anaerobic degradation of digestate based hydrothermal carbonization products in a continuous hybrid fixed bed anaerobic filter / Ahmed, M.; Sartori, F.; Merzari, F.; Fiori, L.; Elagroudy, S.; Negm, M. S.; Andreottola, G.. - In: BIORESOURCE TECHNOLOGY. - ISSN 0960-8524. - STAMPA. - 330:(2021), pp. 124971.1-124971.9. [10.1016/j.biortech.2021.124971]

Anaerobic degradation of digestate based hydrothermal carbonization products in a continuous hybrid fixed bed anaerobic filter

Sartori F.;Fiori L.;Andreottola G.
2021-01-01

Abstract

This study investigates the suitability of continuous hybrid fixed bed anaerobic filter reactor for treating sewage and agro-industrial digestate hydrothermal carbonization (HTC) products; hydrochar and HTC liquor (HTCL). The reactor was operated for 300 days under mesophilic conditions at different organic loading rates (OLR); maximum OLRs of 7.4 and 10 gCOD/L/d were reached while treating HTC liquor and slurry, respectively. 15 g/L hydrochar were added to the reactor as a supplement while treating HTCL solely thus increasing the biogas production up to 153%. The reactor was fed with HTCL and hydrochar with an increasing mixing ratio, and the co-digestion impact was dependent on hydrochar concentrations. The results of the study indicate that the hybrid fixed bed anaerobic filter reactor is a promising anaerobic digestion configuration for treating HTCL and overcoming the HTC upscaling challenges, and the suitability of digestate hydrochar utilization as supplement material for anaerobic digestion.
2021
Ahmed, M.; Sartori, F.; Merzari, F.; Fiori, L.; Elagroudy, S.; Negm, M. S.; Andreottola, G.
Anaerobic degradation of digestate based hydrothermal carbonization products in a continuous hybrid fixed bed anaerobic filter / Ahmed, M.; Sartori, F.; Merzari, F.; Fiori, L.; Elagroudy, S.; Negm, M. S.; Andreottola, G.. - In: BIORESOURCE TECHNOLOGY. - ISSN 0960-8524. - STAMPA. - 330:(2021), pp. 124971.1-124971.9. [10.1016/j.biortech.2021.124971]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/312555
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