Adaptation of thermophilic sludge-inoculum to co-digestion with Sherry-wine distillery wastewater
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DepartmentTecnologías del Medio Ambiente
SourceBiomass and Bioenergy Volume 139, August 2020, 105628
In this work, the progression and microbial considerations have been taking into account in the adaptation of thermophilic sludge-inoculum to anaerobic co-digestion of Sherry-wine distillery wastewater (SW-DW) and sewage sludge (SS). For this purpose, the effect of increasing concentrations of SW-DW as co-substrates with SS was evaluated by measuring biodegradability parameters, biomethane productivity and shift in microbial community. Optimal productivity occurred when 50-75% of SW-DW was used due toconsortia adaptation and more soluble compounds obtaining 0.272-0.277 L CH4·g-1 CODconsumed and TSremoval: 34.5-38.3%; TVSremoval: 51.0-53.2%; CODtremoval: 45.5-64.2%. At this both conditions, hydrolytic acidogenic bacteria reach the maximum levels improving the activity of acetogenic bacteria and acetate utilizing methanogens.