title: Anaerobic co-digestion of by-products from sugar production with cow manure.
abstract: Sugar beet leaves (SBL), sugar beet top (SBT), sugar beet pulp (SBP) and desugared molasses (DM) are by-products from the sugar production. In the present study we investigated the potential of SBL, SBT and SBP as feedstock for biogas production. The maximum methane potential of SBL, SBT and SBP determined by batch assays was found to be 490, 500 and 240 mL-CH(4)/gVS-added respectively. Three reactor experiments were carried out to investigate the effect of co-digestion of SBP, DM and manure at different ratios, on biogas process efficiency and stability. The results showed that DM was potentially inhibiting the biogas process and the co-digestion of SBP and DM was only successful at high dilution with manure or water. In contrast, SBP was shown to be a good substrate for biogas production and the methane yield of 280 mL-CH(4)/gVS-added was obtained in a thermophilic continuously operated reactor, co-digesting 50% of SBP with cow manure.
authors.affiliation: Department of Environmental Engineering, Technical University of Denmark, Building 113, DK-2800 Kgs. Lyngby, Denmark.
authors.forename: Cheng
authors.initials: C
authors.lastname: Fang
authors.forename: Kanokwan
authors.initials: K
authors.lastname: Boe
authors.forename: Irini
authors.initials: I
authors.lastname: Angelidaki
mesh_terms: D000693:Anaerobiosis; D001421:Bacteria, Anaerobic / Q000378:metabolism*; D027461:Beta vulgaris; D057919:Biological Oxygen Demand Analysis; D019422:Dietary Sucrose / Q000191:economics*; D005511:Food Handling; D007220:Industrial Waste / Q000032:analysis*; D008372:Manure / Q000382:microbiology; D008697:Methane / Q000032:analysis / Q000378:metabolism; D018505:Waste Management / Q000379:methods*
chemical_list: D019422:Dietary Sucrose; D007220:Industrial Waste; D008372:Manure; D008697:Methane